Submission #336718

#	Time	Username	Problem	Language	Result	Execution time	Memory
336718		israeladewuyi	Reversing a Sequence (IOI16_reverse)	C++17	Compilation error	0 ms	0 KiB

reverse

#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef vector<ll> vi;
typedef vector<string> vs;
#define PB push_back
#define pb pop_back
const unsigned int M = 1000000007;

//ll reverse(vi v){
//	int a = v.size();
//	for(int i = a - 1; i >= 0; i--){
//		return v[i]
//	}
//}


int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	ll n;cin>>n;
	vi v(n);
	for(auto &a : v)cin>>a;
	
	for(int i = n - 1; i >= 0; i--){
		cout<<v[i]<<" ";
	}
	return 0;
}

Compilation message (stderr)

/tmp/cctKQf8H.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccibKjoH.o:reverse.cpp:(.text.startup+0x0): first defined here
/tmp/cctKQf8H.o: In function `main':
grader.cpp:(.text.startup+0x129): undefined reference to `reverse(std::vector<long long, std::allocator<long long> >)'
collect2: error: ld returned 1 exit status