제출 #1311416

#제출 시각아이디문제언어결과실행 시간메모리
1311416putuputuArranging Shoes (IOI19_shoes)C++20
10 / 100
1096 ms1952 KiB
#include "shoes.h" #include <bits/stdc++.h> using namespace std; long long count_swaps(vector<int>a){ int m=a.size(); long long s=0; int n=m/2; bool ok=true; for(int i=0; i<n; i++){ if(a[i]!=a[i+n]){ ok=false; } } if(ok==true){ return(n*(n-1)/2); } for(int pos=0; pos<m; pos+=2){ if(a[pos]>0){ int nl=-a[pos]; int j=pos+1; while(j<m and a[j]!=nl){ j++; } while(j>pos){ swap(a[j], a[j-1]); j--; s++; } } int nr=-a[pos]; int j=pos+1; while(j<m and a[j]!=nr){ j++; } while(j>pos+1){ swap(a[j], a[j-1]); j--; s++; } } return s; }
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