Submission #1082741

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1082741	2024-09-01 11:27:05	nickolasarapidis	Arranging Shoes (IOI19_shoes)	C++17	10 / 100	1 ms	348 KiB

shoes

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#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
 
ll count_swaps(vector<int> S){
  int N = S.size();
 
  ll ans = 0;
 
  map<int, ll> m;
  map<int, vector<int>> id;
  for(int i = 0; i < N; i++){
    if(m[-S[i]] > 0){
      if(S[i] < 0){
        m[-S[i]]--;
        ans += i - id[-S[i]].back();
        id[-S[i]].pop_back();
      }
      else{
        m[-S[i]]--;
        ans += i - id[-S[i]].back() - 1;
        id[-S[i]].pop_back();
      }
    }
    else{
      m[S[i]]++;
      id[S[i]].push_back(i);
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 15