Submission #1217675

#	Time	Username	Problem	Language	Result	Execution time	Memory
1217675		nickolasarapidis	Arranging Shoes (IOI19_shoes)	C++17	Compilation error	0 ms	0 KiB

shoes

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

long long count_swaps(int[] S){
	int N = S.size()/2;
	map<int, vector<int>> m;
	long long ans = 0;
	for(int i = 0; i < S.size(); i++){
		if(S[i] > 0 and m[-S[i]].size() > 0){
			ans += i - m[-S[i]].back() + 1;
			m[-S[i]].pop_back();
		}
		else if(S[i] < 0 and m[-S[i]].size() > 0){
			ans += i - m[-S[i]].back();
			m[-S[i]].pop_back();
		}
		else{
			m[S[i]].push_back(i);
		}
	}
	return ans;
}

Compilation message (stderr)

shoes.cpp:5:29: error: expected ',' or '...' before 'S'
    5 | long long count_swaps(int[] S){
      |                             ^
shoes.cpp: In function 'long long int count_swaps(int*)':
shoes.cpp:6:17: error: 'S' was not declared in this scope
    6 |         int N = S.size()/2;
      |                 ^