제출 #1203352

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1203352		ankit_singh_programs	은하철도 (APIO24_train)	C++20	컴파일 에러	0 ms	0 KiB

train

#include <bits/stdc++.h>

using namespace std;


#define ll long long

#define fr(i,n) for(int i=0;i<n;++i)
#define fr1(i,n) for(int i=1;i<=n;++i)

#define frn(i,n) for(int i=0;i<=n;++i)



ll solve(){


	return 0;
	
}




int main(){

	#ifndef ONLINE_JUDGE
	freopen("input.txt","r",stdin);
	freopen("output.txt","w",stdout);
	#endif

	

	solve();






	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

train.cpp: In function 'int main()':
train.cpp:31:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |         freopen("input.txt","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
train.cpp:32:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |         freopen("output.txt","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccumfzMf.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccou23yt.o:train.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccumfzMf.o: in function `main':
grader.cpp:(.text.startup+0x4d6): undefined reference to `solve(int, int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, 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