Submission #19668

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
19668	2016-02-25 04:24:09	xdoju	비트 (kriii4_Q)	C++14	9 / 100	0 ms	1088 KiB

Q

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#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 coff[300], add[300];
long long ans[300];
void proc() {
  int n, k;
  scanf("%d %d", &n, &k);
  coff[1] = ((n - 1) * modinv(n)) % MOD;
  add[1] = 1;
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 0 / 91