제출 #19728

#제출 시각UTC-0아이디문제언어결과실행 시간메모리
197282016-02-25 05:02:15xdoju창문 (kriii4_C)C++14
3 / 100
0 ms1084 KiB
#include <cstdio>
using namespace std;
const long long MOD = 1000000007ll;
long long modpow(long long r, long long n) {
long long ret = 1;
while (n > 0) {
if (n % 2 > 0) {
ret = (ret * r) % MOD;
}
r = (r * r) % MOD;
n /= 2;
}
return ret;
}
long long modinv(long long n) {
return modpow(n, MOD - 2);
}
long long modprod(long long a, long long b) {
a = a % MOD;
b = b % MOD;
return (a * b) % MOD;
}
long long modprod(long long a, long long b, long long c) {
c = c % MOD;
return (modprod(a, b) * c) % MOD;
 
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