Submission #1177718

#	Time	Username	Problem	Language	Result	Execution time	Memory
1177718		alwaus424	Arranging Shoes (IOI19_shoes)	C++17	Compilation error	0 ms	0 KiB

shoes

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define fr(m) for(int i = 0; i < m; i++)
#define fro(m) for(int i=1; i<m; i++)
#define _ "\n"
#define nll cout<<'\n'
#define ff first
#define ss second
#define inff (1<<30)
#define srt(m) sort(m.begin(),m.end())
#define srtr(m) sort(m.rbegin(),m.rend())
#define rev(m) reverse(m.begin(),m.end())



int main() {
    
     int n;  cin >> n;
    vector<ll> v(n*2);  
    fr(n*2) cin >> v[i];
    if (v[1] < 0)  cout << 1;
    else cout << 0;

    return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/cc9oaOhZ.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc32zSlK.o:shoes.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/cc9oaOhZ.o: in function `main':
grader.cpp:(.text.startup+0x288): undefined reference to `count_swaps(std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status