제출 #316655

#제출 시각아이디문제언어결과실행 시간메모리
316655Tahmid690Arranging Shoes (IOI19_shoes)C++14
25 / 100
33 ms1924 KiB
#include<bits/stdc++.h>
#include "shoes.h"
using namespace std;
long long count_swaps(vector<int> ara){
  long long n;
    n=ara.size();
    n/=2;
    if(n==1){
        if(ara[0]<0) return 0;
    else return 1;
    }
    
    return (n*(n-1))/2;
}
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