Submission #694851

#	Time	Username	Problem	Language	Result	Execution time	Memory
694851		allin27x	Arranging Shoes (IOI19_shoes)	C++14	Compilation error	0 ms	0 KiB

shoes

#include <iostream>
#include <vector>
using namespace std;
#define int long long
int count_swaps(vector<int> S){
    int res = 0;
    int n = S.size();
    vector<int> s(n,0);
    vector<bool> ac(n,1);
    for (int i=0; i<n; i++){
        if (!ac[i]) continue;
        for (int j=i+1; j<n; j++){
            if (!ac[j] || abs(S[j])!=abs(S[i])) continue;
            ac[j] = 0;
            ac[i] = 0;
            if (S[i]<0) res+=j-i-1; else res+=j-i; break;
        }
    }
    return res;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccmPZQNj.o: in function `main':
grader.cpp:(.text.startup+0x29d): undefined reference to `count_swaps(std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status