Submission #1311386

#	Time	Username	Problem	Language	Result	Execution time	Memory
1311386		putuputu	Arranging Shoes (IOI19_shoes)	C++20	Compilation error	0 ms	0 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
#define int long long
int64_t count_swaps(vector<int>a){
    int m=2*a.size();
    int s=0;
    for(int pos=0; pos<m; pos+=2){
        if(a[pos]>0){
            int nl=-a[pos]; 
            int j=pos+1;
            while(j<m and a[j]!=nl){
               j++; 
            } 
            while(j>pos){
                swap(a[j], a[j-1]);
                j--;
                s++;
            }
        }
        int nr=-a[pos];
        int j=pos+1;
        while(j<m and a[j]!=nr){
            j++;
        } 
        while(j>pos+1){
            swap(a[j], a[j-1]);
            j--;
            s++;
        }
    }
    return s;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccCDcAOe.o: in function `main':
grader.cpp:(.text.startup+0x26b): undefined reference to `count_swaps(std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status