제출 #897781

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
897781		duckindog	Detecting Molecules (IOI16_molecules)	C++14	컴파일 에러	0 ms	0 KiB

molecules

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

using namespace std;

#include "molecules.h"

vector<int> find_subset(int l, int u, vector<int> w) {
  return {0};
}

#ifndef ONLINE_JUDGE
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);
  }

}
#endif // ONLINE_JUDGE

컴파일 시 표준 에러 (stderr) 메시지

molecules.cpp: In function 'int32_t main()':
molecules.cpp:17:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |     freopen("duck.inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
molecules.cpp:18:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |     freopen("duck.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccx3Vhna.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc9zw5Ya.o:molecules.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status