Submission #827921

#	Time	Username	Problem	Language	Result	Execution time	Memory
827921		smatcsu	Arranging Shoes (IOI19_shoes)	C++17	Compilation error	0 ms	0 KiB

shoes

#include<bits/stdc++.h>
#define ll long long
using namespace std;

ll count_swaps(vector<ll> v){
    if(abs(v[0])==v[1] and v[0]<=0 and v[1]>=0) return 0;
    else{
        if(abs(v[1])==v[0] and v[1]<=0 and v[0]>=0) return 1;
        else return -1;
    }
}

Compilation message (stderr)

/usr/bin/ld: /tmp/cclRqJj5.o: in function `main':
grader.cpp:(.text.startup+0x2a8): undefined reference to `count_swaps(std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status