Submission #580740

#	Time	Username	Problem	Language	Result	Execution time	Memory
580740		vladilius	Arranging Shoes (IOI19_shoes)	C++17	Compilation error	0 ms	0 KiB

shoes

#include <bits/stdc++.h>
#include <vector>
using namespace std;

int count_swaps(vector<int> l){
    int n = (int) l.size();
    if (n == 2){
        if (l[0] < l[1]){
            return 0;
        }
        else {
            return 1;
        }
    }
    return -1;
}

int main(){
    int n; cin>>n;
    vector<int> l; 
    for (int i = 0; i < n; i++){
        int num; cin>>num;
        l.push_back(num);
    }
    cout<<count_swaps(l);
}

Compilation message (stderr)

/usr/bin/ld: /tmp/cctaAPDr.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccltLT7p.o:shoes.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status