Created
December 24, 2014 03:27
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| typedef unsigned long long ULONG; | |
| ULONG powm(ULONG a, ULONG n, ULONG mod) { | |
| ULONG r = 1; | |
| while (n) { | |
| if (n & 1) { | |
| r = (r * 1ll * a) % mod; | |
| } | |
| a = (a * 1ll * a) % mod; | |
| n >>= 1; | |
| } | |
| return r; | |
| } |
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