Submission #479975

#	Time	Username	Problem	Language	Result	Execution time	Memory
479975		robell	Cave (IOI13_cave)	C++17	Compilation error	0 ms	0 KiB

cave

#pragma GCC optimize("O2")
#include <bits/stdc++.h>
#include "cave.h"
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef tree<int,null_type,less<int>,rb_tree_tag, tree_order_statistics_node_update> indexed_set;
typedef long long ll;
#define pb push_back
#define eb emplace_back
#define countbits __builtin_popcount
#define beg0 __builtin_clz
#define terminal0 __builtin_ctz
int mod=1e9+7;
void setIO(){
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
}
void setIO(string f){
	freopen((f+".in").c_str(),"r",stdin);
	freopen((f+".out").c_str(),"w",stdout);
	setIO();
}
void exploreCave(int N){
	int pos[N];
	memset(pos,0,sizeof(pos));
	int ans[N];
	for (int i=0;i<N;i++){
		pos[i]=1;
		for (int j=0;j<N;j++){
			if (j!=i){
				pos[j]=0;
			}
		}
		int door = tryCombination(pos);
		ans[i]=door;
	}
	int keys[N];
	int doors[N];
	for (int i=0;i<N;i++){
		keys[i]=i;
		doors[i]=ans[i];
	}
	answer(keys,doors);
}
int main(){
	setIO();
}

Compilation message (stderr)

cave.cpp: In function 'void setIO(std::string)':
cave.cpp:20:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |  freopen((f+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cave.cpp:21:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |  freopen((f+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/cc4pkKRR.o: in function `main':
cave.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc4l7heP.o:grader.c:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status