제출 #202847

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
202847	2020-02-18 08:16:13	coloredrabbit	Phibonacci (kriii2_P)	C++17	0 / 4	5 ms	376 KiB

P

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#include<iostream>
#include<cstring>
using namespace std;
using ll = __int128;
const int LIMIT = 126, M = 1e9 + 7;
const ll MOD = (long long)M * M;
struct _mt {
  ll m[2][2], t[2][2];
  _mt() {
    memset(m, 0, sizeof m); 
    memset(t, 0, sizeof t); 
  }
  void E() { for (int i = 0; i < 2; i++) t[i][i] = m[i][i] = 1; }
  _mt operator*(const _mt& o) {
    _mt r;
    int i, j, k;
    for (i = 0; i < 2; i++)for (j = 0; j < 2; j++) for (k = 0; k < 2; k++) {
      r.m[i][j] = (r.m[i][j] + m[i][k] * o.m[k][j]) % M;
      r.t[i][j] = (r.t[i][j] + t[i][k] * o.t[k][j]) % MOD;
    }
    return r;
  }
}F[LIMIT], NK, K;
ll _pow(ll a, ll n) {
  if (n == 1) return a;
  ll h = _pow(a, n >> 1);
  return (h * h % M) * (n % 2 ? a : 1) % M;
}
int main() {
  freopen("input.txt","r",stdin);
 
 
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컴파일 시 표준 에러 (stderr) 메시지

P.cpp: In function 'int main()':
P.cpp:30:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  freopen("input.txt","r",stdin);
  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 1
• Subtask 2: 0 / 3