Submission #1311417

#	Time	Username	Problem	Language	Result	Execution time	Memory
1311417		nikoloz-ch	Arranging Shoes (IOI19_shoes)	C++20	0 / 100	1 ms	336 KiB

shoes

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

long long count_swaps(vector<int>S){
    long long ans = 0;
    map<int,int> mp;
    for(int i = 0; i < S.size(); i++){
        mp[S[i]] = i;
    } set<int> st;
    for(int i = 0; i < S.size(); i++){
        if(S[i] < 0) continue;
        if(st.find(S[i]) == st.end()){
            ans += abs(mp[S[i]]-mp[-S[i]]);
            st.insert(-S[i]); st.insert(S[i]);
        }
    }
    return ans;
}

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