Submission #361219

#	Time	Username	Problem	Language	Result	Execution time	Memory
361219		Sparky_09	Paint By Numbers (IOI16_paint)	C++17	Compilation error	0 ms	0 KiB

paint

#include <bits/stdc++.h>
using namespace std;
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<ll, ll> pii;
typedef vector<ll> vi;
typedef vector<pii> vpi;

void usaco(string s){
  freopen((s+".in").c_str(), "r", stdin);
  freopen((s+".out").c_str(), "w", stdout);
}


string solve_puzzle(string s, vector<int> c){
  string ans = s;
  for(int i = 0; i < sz(s); i++) ans[i] = '?';
  return ans;
}

int main() {
	cin.tie(0)->sync_with_stdio(0);
	cin.exceptions(cin.failbit);
#ifdef LOCAL_DEFINE
	freopen("input.txt", "r", stdin);
#endif

}

Compilation message (stderr)

paint.cpp: In function 'void usaco(std::string)':
paint.cpp:12:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   12 |   freopen((s+".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
paint.cpp:13:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   13 |   freopen((s+".out").c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/tmp/ccDS5nxx.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/cc70KaL6.o:paint.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status