제출 #1172203

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1172203		ntcnng_	나일강 (IOI24_nile)	C++20	컴파일 에러	0 ms	0 KiB

nile

#include <bits/stdc++.h>

#define int long long

using namespace std;

const int N = 1e5 + 5,
          oo = 1e16;

int n, q;
int w[N], a[N], b[N];

vector<int> calculate_costs(
    vector<int> W, vector<int> A,
    vector<int> B, vector<int> E) {

  for(int i = 1; i <= n; ++i) w[i] = W[i - 1], a[i] = A[i - 1], b[i] = B[i - 1];

  vector<int> ans;

  for(auto D : E) {
    int res = 0;
    for(int i = 1; i <= n; ++i) res += b[i];

    if(n & 1) {
      int sub = -oo;
      for(int i = 1; i <= n; ++i) sub = max(sub, a[i] - b[i]);
      res -= sub;
    }

    ans.push_back(res);
  }
  return ans;
}

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

  if(fopen("v.inp", "r")) {
    freopen("v.inp", "r", stdin);
    freopen("v.out", "w", stdout);
  }

  vector<int> W, A, B, E;

  cin >> n;
  for(int i = 1; i <= n; ++i) {
    int w, a, b; cin >> w >> a >> b;
    W.push_back(w); A.push_back(a); B.push_back(b);
  }

  cin >> q;
  for(int i = 1; i <= q; ++i) {
    int D; cin >> D;
    E.push_back(D);
  }

  vector<int> ans = calculate_costs(W, A, B, E);
  for(auto x : ans) cout << x << '\n';
}

컴파일 시 표준 에러 (stderr) 메시지

nile.cpp: In function 'int32_t main()':
nile.cpp:40:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |     freopen("v.inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
nile.cpp:41:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |     freopen("v.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccJjKip9.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cchbGAGc.o:nile.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccJjKip9.o: in function `main':
grader.cpp:(.text.startup+0x30e): undefined reference to `calculate_costs(std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status