Acchyut Jolly

Country WCA ID Gender Competitions Completed Solves
India 2015JOLL02 Male 22 858

Current Personal Records

Event NR CR WR Single Average WR CR NR
3x3x3 Cube 114 1112 3113 8.87 11.30 3894 1451 144
2x2x2 Cube 132 709 2626 2.03 4.10 4851 1507 233
4x4x4 Cube 166 2180 5324 44.99 52.66 5777 2386 171
5x5x5 Cube 69 1117 2813 1:23.60 1:30.49 2515 1003 67
6x6x6 Cube 51 779 2139 2:58.35 3:13.44 2233 821 54
7x7x7 Cube 42 766 2021 4:34.08 4:44.58 1895 719 36
3x3x3 Blindfolded 32 299 774 1:14.55 2:04.89 770 276 34
3x3x3 Fewest Moves 12 98 413 28 39.00 975 258 34
3x3x3 One-Handed 359 3068 7260 21.14 24.79 6243 2700 303
3x3x3 With Feet 64 412 1079 1:34.17 1:59.12 1095 407 67
Clock 193 1802 5494 31.95 50.84 4958 1673 207
Megaminx 122 1483 4337 1:42.09 2:00.55 4755 1625 142
Pyraminx 168 1020 3183 3.98 5.57 2075 717 105
Skewb 203 1261 3875 4.61 7.71 4419 1496 226
Square-1 123 1198 4194 28.52 32.24 3121 920 88
4x4x4 Blindfolded 21 191 573 12:29.00
3x3x3 Multi-Blind 55 344 1123 4/5 41:25

Medal Collection

Gold Silver Bronze
2 0 4
Competition Round Place Single Average Solves
3x3x3 Cube
Indian Nationals 2019 First 47 11.95 12.87 12.6111.9513.2312.7613.81
MathSoc Open 2018 Final 11 9.94 12.58 11.49DNF9.9411.5614.70
Second 12 10.15 12.32 12.0812.6712.2014.5510.15
First 13 10.92 13.14 15.5610.9213.5213.2112.68
Shri Ram Cubing Challenge 2017 Final 28 10.99 14.42 16.3313.9014.5914.7810.99
First 8 10.97 11.30 11.5611.0310.9711.3113.04
Lord Of The Minx 2017 Final 15 12.87 14.17 17.1712.8713.9913.6214.89
First 14 11.78 13.88 DNF13.5813.1914.8611.78
Delhi Cube Splash 2017 Final 14 11.32 13.64 11.3217.5514.0612.9613.91
Second 14 12.61 12.95 13.0212.9113.3812.9312.61
First 32 11.72 17.26 15.7519.3911.7216.64DNF
National Cubing Region Open 2017 Second 37 13.26 16.26 18.8216.4413.5113.2622.18
First 28 12.49 14.48 15.3415.3312.7619.4212.49
SNU Open 2017 Second 13 11.13 13.79 14.6013.8611.1316.5912.90
First 7 8.87 11.35 11.878.8712.5410.3011.87
Delhi Open 2017 Final 15 12.87 14.87 15.5113.8516.5712.8715.25
Second 15 11.25 14.01 11.2515.2513.8412.9515.97
First 45 13.74 19.91 14.3229.0917.4513.7427.96
MathSoc Open 2017 Second 16 11.37 13.91 12.8316.5411.3712.3718.27
First 33 13.72 17.31 16.8318.5013.7216.6119.18
Cubing Complexity 2016 Second 22 13.14 15.74 15.6226.1918.3413.2513.14
Combined First 28 11.81 16.29 18.6015.2914.9719.5611.81
Shri Ram Cubing Challenge 2016 Second 27 12.41 15.29 31.0712.4117.8014.7813.30
Combined First 27 12.12 15.59 12.1218.1216.5016.5713.70
National Cubing Region Open 2016 Second 39 10.98 18.08 10.98DNF17.7816.5419.91
Combined First 36 13.17 17.14 15.0020.2817.6918.7313.17
Indian Nationals 2016 First 89 16.24 20.15 24.3616.2420.7821.0218.65
MathSoc Open 2016 Second 32 19.02 27.58 38.6019.0224.56DNF19.59
Combined First 27 16.48 18.17 16.4817.4918.9918.1718.84
Great Indian Cubeathon 2016 Combined First 55 20.65 25.70 33.1320.8823.1020.65DNF
Plenty o' Parity 2015 First 37 18.84 23.29 18.8423.0325.0921.75DNF
Delhi Autumn Open 2015 Combined First 47 21.57 23.16 24.5221.5726.7922.8922.08
Akash Open 2015 Combined First 87 DNF DNFDNF
2x2x2 Cube
Indian Nationals 2019 First 79 3.37 5.81 5.136.528.555.773.37
MathSoc Open 2018 First 10 2.03 4.11 3.944.022.034.38DNF
Shri Ram Cubing Challenge 2017 First 21 3.04 5.23 3.047.736.835.503.36
National Cubing Region Open 2017 First 43 3.77 5.87 3.774.638.354.64DNF
SNU Open 2017 Second 13 3.34 4.34 4.494.105.534.433.34
First 13 3.75 4.32 4.105.224.183.754.68
Delhi Open 2017 Final 6 3.12 4.73 3.767.804.783.125.64
Second 6 3.75 4.23 4.194.663.853.757.43
First 11 3.29 4.76 5.763.295.125.104.05
MathSoc Open 2017 First 23 3.98 5.60 DNF7.213.984.235.35
Cubing Complexity 2016 Final 14 3.60 4.89 4.113.604.316.256.43
Second 16 4.22 4.93 4.705.029.024.225.08
Combined First 14 3.76 4.56 4.627.495.043.764.02
Shri Ram Cubing Challenge 2016 Second 38 4.51 7.39 6.768.4113.656.994.51
First 17 4.10 4.93 5.214.105.08DNF4.49
National Cubing Region Open 2016 Second 30 4.39 7.14 10.204.938.774.397.71
Combined First 12 3.29 4.10 5.343.294.353.784.16
Indian Nationals 2016 Combined First 142 5.51 11.04 5.519.11DNF17.056.97
MathSoc Open 2016 First 39 7.17 10.89 7.17DNF13.168.3511.17
Great Indian Cubeathon 2016 Combined First 48 6.82 7.52 7.337.148.106.8214.20
Delhi Autumn Open 2015 Combined First 30 6.06 7.12 7.676.306.0612.067.40
Akash Open 2015 Combined First 57 9.06 11.64 DNF12.739.0610.1911.99
4x4x4 Cube
Indian Nationals 2019 Combined First 39 44.99 52.66 44.9953.8554.0252.2651.87
MathSoc Open 2018 Combined First 12 48.69 54.44 1:01.3557.9248.6952.3553.06
Shri Ram Cubing Challenge 2017 Combined Final 20 56.75 1:01.77 56.7558.761:08.031:14.9058.51
National Cubing Region Open 2017 Combined First 25 59.11 1:08.23 1:52.081:13.061:11.291:00.3559.11
SNU Open 2017 Combined First 14 57.22 1:05.92 57.221:10.721:04.751:07.981:05.03
Delhi Open 2017 Combined First 15 49.97 1:00.60 49.971:00.5957.931:03.28DNF
Cubing Complexity 2016 Combined First 14 48.93 58.41 56.7255.0148.931:03.501:10.11
Shri Ram Cubing Challenge 2016 Combined Final 21 1:03.92 1:13.28 1:03.921:08.721:23.151:07.96DNF
National Cubing Region Open 2016 Combined First 31 1:15.12 1:24.14 1:29.291:15.121:23.051:38.211:20.09
Indian Nationals 2016 Combined First 49 1:11.95 1:17.59 1:11.951:13.881:16.661:29.401:22.22
MathSoc Open 2016 Combined First 19 1:24.51 1:31.96 1:34.851:44.931:31.751:29.271:24.51
Great Indian Cubeathon 2016 Second 21 1:23.15 1:43.53 1:42.121:42.621:45.851:23.151:59.99
Combined First 21 1:10.16 1:30.88 DNF1:45.891:28.121:10.161:18.64
Delhi Autumn Open 2015 Combined First 29 1:44.69 1:44.69DNF
Akash Open 2015 Combined First 35 2:13.20 2:13.20DNF
5x5x5 Cube
Indian Nationals 2019 Combined First 22 1:23.60 1:30.49 1:47.641:26.171:34.021:23.601:31.28
Shri Ram Cubing Challenge 2017 Combined Final 7 1:27.37 1:31.97 1:29.54DNF1:31.011:27.371:35.35
Lord Of The Minx 2017 Combined Final 6 1:26.25 1:30.81 1:34.251:33.881:29.021:26.251:29.52
National Cubing Region Open 2017 Second 12 1:43.48 1:50.99 1:51.251:43.481:50.671:52.181:51.06
Combined First 14 1:36.66 1:49.87 1:49.741:50.461:49.412:03.701:36.66
SNU Open 2017 Combined First 12 1:37.02 1:52.03 1:55.391:47.872:07.161:37.021:52.84
MathSoc Open 2017 Combined Final 9 1:39.62 1:48.90 1:45.641:52.251:48.821:39.622:00.55
Cubing Complexity 2016 Final 10 1:56.35 1:56.62 1:56.351:56.711:56.742:15.031:56.42
Combined First 11 1:46.62 1:53.53 1:47.981:46.621:57.712:15.511:54.89
National Cubing Region Open 2016 Combined Final 14 2:03.80 2:12.39 2:15.422:10.792:26.762:10.972:03.80
Indian Nationals 2016 Combined First 31 2:00.08 2:11.59 2:07.192:13.752:13.842:26.412:00.08
MathSoc Open 2016 Combined First 12 2:11.74 2:19.28 2:11.742:33.402:19.192:15.962:22.69
Great Indian Cubeathon 2016 Combined First 17 2:51.61 2:57.89 2:57.572:54.663:01.45DNF2:51.61
Delhi Autumn Open 2015 Combined Final 19 3:05.69 3:05.693:14.67
6x6x6 Cube
Indian Nationals 2019 Combined First 20 2:58.35 3:13.44 3:12.732:58.353:29.24
SNU Open 2018 Combined Final 9 3:08.60 3:18.84 3:25.223:08.603:22.69
Shri Ram Cubing Challenge 2017 Combined Final 14 3:23.88 4:40.25 3:23.886:12.884:24.00
Lord Of The Minx 2017 Combined Final 17 3:31.14 DNF 3:34.093:31.14DNF
National Cubing Region Open 2017 Combined First 20 3:14.68 DNF 3:14.683:18.31DNS
SNU Open 2017 Combined First 11 3:38.78 3:50.63 3:57.813:38.783:55.31
Cubing Complexity 2016 Combined First 10 4:04.38 4:21.78 4:36.294:04.384:24.67
National Cubing Region Open 2016 Combined Final 11 4:31.55 6:12.11 5:21.888:42.914:31.55
Indian Nationals 2016 Combined First 26 4:51.92 5:11.13 5:09.295:32.184:51.92
Great Indian Cubeathon 2016 Final 7 5:32.09 6:10.28 6:52.536:06.215:32.09
Combined First 8 6:15.70 6:24.26 6:34.496:15.706:22.59
Plenty o' Parity 2015 Combined First 10 6:39.77 DNF 6:39.778:28.53DNF
7x7x7 Cube
Indian Nationals 2019 Combined First 18 4:44.68 5:11.04 5:15.364:44.685:33.08
SNU Open 2018 Combined Final 10 4:41.85 5:08.89 5:41.394:41.855:03.42
Shri Ram Cubing Challenge 2017 Combined Final 6 4:34.08 4:44.58 4:48.004:51.654:34.08
Lord Of The Minx 2017 Combined Final 9 5:10.93 5:22.17 5:10.935:11.875:43.71
National Cubing Region Open 2017 Combined First 11 5:56.47 6:11.26 6:04.195:56.476:33.12
SNU Open 2017 Combined First 8 6:02.14 6:09.13 6:09.596:02.146:15.65
Cubing Complexity 2016 Combined First 8 7:20.72 7:24.15 7:23.837:27.907:20.72
National Cubing Region Open 2016 Combined Final 13 9:17.96 9:17.96
Indian Nationals 2016 Combined First 30 DNF DNF
3x3x3 Blindfolded
Indian Nationals 2019 Final 9 3:14.20 DNF DNF3:14.20DNF
First 11 2:54.40 DNF DNFDNF2:54.40
MathSoc Open 2018 Final 3 1:21.50 DNF 1:35.72DNF1:21.50
First 4 3:21.28 DNF DNF3:21.28DNF
Shri Ram Cubing Challenge 2017 Final 11 DNF DNF DNFDNFDNF
Delhi Cube Splash 2017 Final 9 DNF DNF DNFDNFDNF
National Cubing Region Open 2017 Final 4 1:23.83 DNF DNF1:23.83DNF
First 4 1:14.55 DNF DNF1:14.55DNF
SNU Open 2017 Final 3 1:58.25 2:04.89 2:06.231:58.252:10.20
Delhi Open 2017 First 5 2:15.99 DNF DNF2:15.99DNF
Shri Ram Cubing Challenge 2016 First 6 DNF DNF DNFDNFDNF
National Cubing Region Open 2016 Final 3 2:00.56 DNF DNFDNF2:00.56
Indian Nationals 2016 Second 12 5:56.43 DNF DNF5:56.43DNF
First 14 6:29.56 DNF 6:29.567:04.56DNF
3x3x3 Fewest Moves
FMC 2019 Final 127 31 39.00 314343
Indian Nationals 2019 Final 48 DNF DNF DNFDNFDNS
SNU Open 2018 Final 1 33 33
FMC Asia 2017 Final 96 28 DNF DNF28DNF
Shri Ram Cubing Challenge 2017 Final 15 51 51
Delhi Cube Splash 2017 Final 15 DNF DNF
National Cubing Region Open 2017 Final 17 41 DNF DNF4941
Delhi Open 2017 Final 14 DNF DNF
FMC Asia 2016 Final 96 36 DNF DNF36DNF
Indian Nationals 2016 Final 33 DNF DNSDNF
Great Indian Cubeathon 2016 Final 11 54 54
Akash Open 2015 Final 13 DNF DNF
3x3x3 One-Handed
Indian Nationals 2019 Combined First 55 22.56 28.11 22.5629.6923.4433.3031.21
MathSoc Open 2018 Final 15 21.14 25.37 33.0632.5721.1421.4022.13
First 13 21.86 25.54 33.9625.5022.7028.4321.86
Shri Ram Cubing Challenge 2017 Final 16 22.22 24.79 24.7022.2231.5925.8823.78
Delhi Cube Splash 2017 Combined First 20 22.20 28.09 27.3226.4534.0030.5022.20
National Cubing Region Open 2017 Second 21 21.34 29.53 21.34DNF32.1425.4730.97
Combined First 16 23.61 27.32 27.6531.8723.6129.6924.63
Delhi Open 2017 Combined First 26 26.45 36.85 31.6026.45DNF38.2740.68
MathSoc Open 2017 Combined First 28 30.62 34.02 30.6231.2533.6437.17DNF
Cubing Complexity 2016 Combined First 30 26.46 38.74 DNF26.4643.6636.4536.10
National Cubing Region Open 2016 Combined First 32 23.11 40.69 DNF23.1157.9236.3127.85
Indian Nationals 2016 Combined First 102 34.07 DNF 58.4246.8234.07DNFDNF
MathSoc Open 2016 Second 19 33.25 44.65 DNF42.5239.6333.2551.80
Combined First 21 31.37 43.82 31.3747.2443.7140.5250.47
Great Indian Cubeathon 2016 Second 18 30.62 39.61 45.1747.5242.8430.8230.62
Combined First 28 31.08 41.96 34.7844.1746.94DNF31.08
Plenty o' Parity 2015 Combined First 21 34.57 43.28 34.57DNF39.3135.0455.48
Akash Open 2015 Combined First 43 1:36.18 1:36.18DNF
3x3x3 With Feet
SNU Open 2018 Final 9 2:28.37 2:53.86 3:07.493:04.892:59.982:36.712:28.37
Shri Ram Cubing Challenge 2017 Combined Final 9 1:53.37 2:34.08 1:55.431:53.373:53.44
Delhi Cube Splash 2017 Combined Final 6 1:34.17 1:59.12 2:41.551:41.651:34.17
National Cubing Region Open 2017 Combined First 16 2:48.06 DNF 3:06.53DNF2:48.06
Delhi Open 2017 Combined Final 5 2:21.41 2:43.41 2:21.413:26.642:22.19
Shri Ram Cubing Challenge 2016 Combined Final 11 4:21.05 4:21.05
Indian Nationals 2016 Combined First 29 DNF DNF
Clock
MathSoc Open 2018 First 16 41.36 1:02.87 41.36DNF53.461:09.721:05.42
Shri Ram Cubing Challenge 2017 Combined Final 15 31.95 DNF 51.91DNF37.6831.95DNF
National Cubing Region Open 2017 Combined First 14 35.03 50.84 35.03DNF38.0339.701:14.80
SNU Open 2017 Combined First 11 42.41 1:08.7742.41
MathSoc Open 2017 Combined Final 11 35.21 DNF 35.21DNF41.9938.52DNF
Shri Ram Cubing Challenge 2016 Combined Final 12 39.59 52.81 45.6939.6739.59DNF1:13.08
Megaminx
Indian Nationals 2019 Combined First 29 1:42.09 2:00.55 1:59.902:12.941:42.092:06.681:55.07
SNU Open 2018 Combined Final 13 1:54.85 2:06.50 2:56.412:03.451:54.852:06.802:09.24
Shri Ram Cubing Challenge 2017 Combined Final 14 2:03.07 2:16.09 2:03.072:30.512:16.482:11.462:20.34
Lord Of The Minx 2017 Combined Final 13 1:58.73 2:06.63 2:06.002:31.152:14.571:58.731:59.32
National Cubing Region Open 2017 Combined First 19 2:17.49 2:31.85 2:29.542:35.592:17.492:30.423:19.91
Delhi Open 2017 Combined Final 12 2:06.80 2:18.04 2:25.812:06.802:12.712:20.192:21.21
MathSoc Open 2017 Combined Final 9 2:01.47 2:07.32 2:15.972:06.002:07.762:08.192:01.47
Shri Ram Cubing Challenge 2016 Combined Final 11 1:58.11 2:12.07 1:58.112:07.502:16.812:11.912:52.63
National Cubing Region Open 2016 Combined Final 22 3:54.86 DNF3:54.86
Indian Nationals 2016 Combined First 47 DNF DNFDNF
MathSoc Open 2016 Combined First 12 3:40.44 4:30.483:40.44
Great Indian Cubeathon 2016 Combined First 16 3:43.05 4:32.67 3:58.644:10.85DNF3:43.055:28.51
Pyraminx
Indian Nationals 2019 First 35 7.77 7.98 8.147.777.827.999.02
MathSoc Open 2018 First 18 7.43 8.88 7.807.438.7810.0510.21
Shri Ram Cubing Challenge 2017 Final 12 5.22 7.43 5.908.785.227.61DNF
Lord Of The Minx 2017 Second 15 5.56 7.75 5.566.53DNF7.259.48
First 13 5.95 7.43 9.025.956.576.69DNF
National Cubing Region Open 2017 Final 16 5.15 7.71 8.865.156.43DNF7.83
Second 16 6.36 7.82 12.897.566.366.769.13
First 21 5.04 8.43 5.048.178.639.208.49
SNU Open 2017 Second 14 4.49 8.66 13.919.876.164.499.95
First 9 3.98 6.29 6.163.985.417.927.30
Delhi Open 2017 Final 7 3.99 5.57 4.736.515.463.9913.41
First 11 4.50 6.67 7.996.125.977.914.50
MathSoc Open 2017 Final 10 5.31 7.28 6.4811.4110.005.315.35
First 9 4.69 7.07 8.218.257.765.254.69
Cubing Complexity 2016 Final 14 6.62 8.21 6.9410.266.627.4411.52
Second 13 6.21 7.35 7.829.527.766.216.46
Combined First 11 5.66 6.79 10.677.595.996.805.66
National Cubing Region Open 2016 Second 13 5.63 7.83 14.845.639.466.787.26
Combined First 27 6.77 9.06 9.339.798.07DNF6.77
Indian Nationals 2016 Combined First 38 9.01 9.87 9.3010.799.0111.099.52
MathSoc Open 2016 Second 16 7.93 9.72 9.7110.648.9710.477.93
Combined First 18 6.30 8.90 8.149.5812.936.308.97
Great Indian Cubeathon 2016 Combined First 62 10.11 DNF 12.51DNF13.0010.11DNF
Plenty o' Parity 2015 Combined Final 20 9.27 12.11 9.2712.8615.7811.9411.53
Delhi Autumn Open 2015 Combined First 53 10.02 16.66 10.02DNF19.8316.6613.48
Skewb
Indian Nationals 2019 First 37 6.42 8.41 7.286.426.8028.8411.15
SNU Open 2018 First 18 6.44 9.33 17.6210.678.908.416.44
MathSoc Open 2018 First 15 4.61 7.71 7.207.404.6111.928.52
Shri Ram Cubing Challenge 2017 Final 21 7.35 10.84 12.857.359.2510.4114.56
National Cubing Region Open 2017 Second 19 6.75 10.02 6.75DNF8.538.9112.61
First 21 8.31 9.21 8.319.6910.778.669.27
SNU Open 2017 Combined First 13 8.16 10.41 10.5112.188.5313.828.16
MathSoc Open 2017 Combined First 21 10.91 12.71 13.0810.9126.0212.3112.73
Cubing Complexity 2016 Combined First 13 8.68 9.47 9.159.728.689.5514.43
National Cubing Region Open 2016 Combined First 35 7.46 15.41 21.637.468.5316.07DNF
Indian Nationals 2016 Combined First 56 11.92 13.23 11.9215.0812.2315.1412.39
MathSoc Open 2016 Combined First 20 11.14 14.85 16.9415.3612.4511.1416.74
Great Indian Cubeathon 2016 Combined First 27 9.68 18.20 15.619.68DNF14.9324.07
Plenty o' Parity 2015 Combined First 13 8.85 16.23 DNF20.3018.038.8510.35
Square-1
Indian Nationals 2019 Combined First 29 30.84 44.79 53.6632.3057.5830.8448.41
MathSoc Open 2018 Combined First 11 41.57 50.33 56.701:10.8747.2447.0641.57
Shri Ram Cubing Challenge 2017 Combined Final 12 35.82 43.09 35.8239.9943.0246.2553.39
National Cubing Region Open 2017 Combined First 13 28.52 32.24 DNF33.4130.1228.5233.18
Delhi Open 2017 Combined First 13 37.81 48.05 1:21.0151.7754.3438.0337.81
MathSoc Open 2017 Combined First 12 37.99 42.86 39.15DNF37.9951.2138.22
Shri Ram Cubing Challenge 2016 Combined First 16 41.60 51.98 DNF41.6049.9758.8147.17
National Cubing Region Open 2016 Combined First 17 41.63 49.24 53.7849.4141.63DNF44.54
Indian Nationals 2016 Combined First 32 1:01.10 1:01.101:07.69
Great Indian Cubeathon 2016 Combined First 16 1:26.09 2:27.68 1:37.991:37.21DNF1:26.094:07.83
4x4x4 Blindfolded
Indian Nationals 2019 Final 8 DNF DNF DNFDNFDNS
SNU Open 2018 Final 1 17:07.00 DNF DNFDNF17:07.00
Shri Ram Cubing Challenge 2017 Final 4 DNF DNF DNFDNFDNF
Lord Of The Minx 2017 Final 3 14:03.00 DNF DNFDNF14:03.00
National Cubing Region Open 2017 Final 4 12:29.00 DNF DNF12:29.00DNF
SNU Open 2017 Final 2 DNF DNF DNFDNFDNF
Shri Ram Cubing Challenge 2016 Final 3 DNF DNF DNFDNFDNF
5x5x5 Blindfolded
Shri Ram Cubing Challenge 2017 Final 4 DNF DNF DNFDNFDNS
National Cubing Region Open 2017 Final 2 DNF DNF DNFDNFDNS
SNU Open 2017 Final 2 DNF DNF DNFDNFDNS
Cubing Complexity 2016 Final 1 DNF DNF DNFDNFDNF
3x3x3 Multi-Blind
Indian Nationals 2019 Final 11 DNF DNFDNF
MathSoc Open 2018 Final 6 3/5 29:08 3/5 34:503/5 29:08
Shri Ram Cubing Challenge 2017 Final 6 DNF DNF
Delhi Cube Splash 2017 Final 5 DNF DNF
National Cubing Region Open 2017 Final 7 4/7 48:40 4/7 48:40DNF
Delhi Open 2017 Final 4 4/5 41:25 3/5 35:054/5 41:25
Shri Ram Cubing Challenge 2016 Final 5 DNF DNF
National Cubing Region Open 2016 Final 4 DNF DNF
Indian Nationals 2016 Final 11 DNF DNF