Submission #1062858

#	Time	Username	Problem	Language	Result	Execution time	Memory
1062858		Ahmed57	Arranging Shoes (IOI19_shoes)	C++17	10 / 100	1 ms	428 KiB

shoes

#include "bits/stdc++.h"
using namespace std;
long long count_swaps(vector<int> s){
    int n = s.size();
    map<int,stack<int>> v; 
    long long ans = 0;
    for(int i = 0;i<n;i++){
        if(v[-s[i]].size()==0)v[s[i]].push(i);
        else{
            ans+=(i-v[-s[i]].top()-1);
            v[-s[i]].pop();
            if(s[i]<0)ans++;
        }
    }
    return ans;
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 15