Submission #301918

#	Time	Username	Problem	Language	Result	Execution time	Memory
301918		NicolaAbusaad2014	Arranging Shoes (IOI19_shoes)	C++14	Compilation error	0 ms	0 KiB

shoes

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

long long count_swaps(std::vector<int> s) {
    return (n*(n-1))/2;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:6:13: error: 'n' was not declared in this scope
    6 |     return (n*(n-1))/2;
      |             ^