Submission #1311347

#	Time	Username	Problem	Language	Result	Execution time	Memory
1311347		putuputu	Arranging Shoes (IOI19_shoes)	C++20	Compilation error	0 ms	0 KiB

shoes

#include <bits/stdc++.h>
using namespace std;
#define int long long
int64_t count_swaps(vector<int>a){
    int m=2*a.size();
    int swap=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--;
                swap++;
            }
        }
        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--;
            swap++;
        }
    }
    return swap;
}

Compilation message (stderr)

shoes.cpp: In function 'int64_t count_swaps(std::vector<long long int>)':
shoes.cpp:15:21: error: 'swap' cannot be used as a function
   15 |                 swap(a[j], a[j-1]);
      |                 ~~~~^~~~~~~~~~~~~~
shoes.cpp:26:17: error: 'swap' cannot be used as a function
   26 |             swap(a[j], a[j-1]);
      |             ~~~~^~~~~~~~~~~~~~