제출 #901574

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
901574		duckindog	Magneti (COCI21_magneti)	C++14	0 / 110	4 ms	756 KiB

Main

// from duckindog wth depression
#include<bits/stdc++.h>

using namespace std;

const int N = 50 + 10,
          L = 1e4 + 10,
          M = 1e9 + 7;
int n, l;
int r[N];
void sub1() {
  vector<long long> d(l + 1), f(l + 1);
  const int x = r[1];
  for (int i = 1; i <= l; ++i) d[i] = (d[i - 1] + n) % M;

  for (int i = 2; i <= n; ++i) {

    fill(f.begin(), f.end(), 0);

    for (int j = i * x; j <= l; ++j) f[j] = (d[j - x] * (n - i + 1)) % M;

    for (int j = 1; j <= l; ++j) d[j] = (d[j - 1] + f[j]) % M;

  }
  cout << d[l];
}

int32_t main() {
  cin.tie(0)->sync_with_stdio(0);

  if (fopen("duck.inp", "r")) {
    freopen("duck.inp", "r", stdin);
    freopen("duck.out", "w", stdout);
  }
  cin >> n >> l;
  for(int i = 1; i <= n; ++i) cin >> r[i];
  sort(r + 1, r + n + 1);
  int sub = r[1] == r[n] ? 1 : n <= 10 ? 2 : (n <= 30 && l <= 300) ? 3 : 4;

  if (sub == 1) {
    sub1();
    return 0;
  }


}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int32_t main()':
Main.cpp:32:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |     freopen("duck.inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:33:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |     freopen("duck.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 30
• Subtask 4: 0 / 50