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Copy pathNCR.cpp
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34 lines (31 loc) · 2.7 KB
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ll nCr[ 1001 ][ 1001 ];
void NCR() {
for(int i = 1; i < 1001; i += 1) nCr[ i ][ 0 ] = 1;
nCr[ 1 ][ 1 ] = 1;
for(int i = 2; i < 1001; i += 1)
for(int j = 1; j < N; j += 1)
nCr[ i ][ j ] = nCr[ i - 1 ][ j - 1 ] + nCr[ i - 1 ][ j ];
}
NCR TABLE:
/******************************************* 20/15 NCR Table **************************************************/
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0
1 3 3 1 0 0 0 0 0 0 0 0 0 0 0 0
1 4 6 4 1 0 0 0 0 0 0 0 0 0 0 0
1 5 10 10 5 1 0 0 0 0 0 0 0 0 0 0
1 6 15 20 15 6 1 0 0 0 0 0 0 0 0 0
1 7 21 35 35 21 7 1 0 0 0 0 0 0 0 0
1 8 28 56 70 56 28 8 1 0 0 0 0 0 0 0
1 9 36 84 126 126 84 36 9 1 0 0 0 0 0 0
1 10 45 120 210 252 210 120 45 10 1 0 0 0 0 0
1 11 55 165 330 462 462 330 165 55 11 1 0 0 0 0
1 12 66 220 495 792 924 792 495 220 66 12 1 0 0 0
1 13 78 286 715 1287 1716 1716 1287 715 286 78 13 1 0 0
1 14 91 364 1001 2002 3003 3432 3003 2002 1001 364 91 14 1 0
1 15 105 455 1365 3003 5005 6435 6435 5005 3003 1365 455 105 15 1
1 16 120 560 1820 4368 8008 11440 12870 11440 8008 4368 1820 560 120 16
1 17 136 680 2380 6188 12376 19448 24310 24310 19448 12376 6188 2380 680 136
1 18 153 816 3060 8568 18564 31824 43758 48620 43758 31824 18564 8568 3060 816
1 19 171 969 3876 11628 27132 50388 75582 92378 92378 75582 50388 27132 11628 3876
1 20 190 1140 4845 15504 38760 77520 125970 167960 184756 167960 125970 77520 38760 15504