Submission #1274233

#TimeUsernameProblemLanguageResultExecution timeMemory
1274233gazizmadi11Arranging Shoes (IOI19_shoes)C++20
10 / 100
1 ms344 KiB
#include <bits/stdc++.h> #include "shoes.h" #define pb push_back // #define pf push_front // #define F first // #define S second // #define all(v) v.begin(),v.end() // #define pii pair<int,int> // #define tm (tl+tr)/2 // #define TL v+v, tl, tm // #define TR v+v+1, tm+1, tr // #define DA l <= tl && tr <= r // #define NE r < tl || tr < l // #define double long double // #define int long long s using namespace std; // const int N=2e5+7; // const int mod=998244353; // const int inf=2e9; long long count_swaps(vector<int>S){ vector<int>a[S.size()+1]; vector<int>b[S.size()+1]; long long ans=0; for(int i=0; i < S.size(); i++){ int x = S[i]; if(x > 0){ if(a[x].size()){ ans+=i-a[x].back()-1; a[x].pop_back(); } else b[x].pb(i); } else{ x=abs(x); if(b[x].size()){ ans+=i-b[x].back(); b[x].pop_back(); } else a[x].pb(i); } } return ans; } // void solve(){ // } // signed main(){ // ios_base::sync_with_stdio(0); // cin.tie(0); // int dioz=1; // cin >> dioz; // while(dioz--)solve(); // return 0; // }
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