제출 #428058

#제출 시각아이디문제언어결과실행 시간메모리
428058A_DArranging Shoes (IOI19_shoes)C++14
25 / 100
25 ms1860 KiB
#include "shoes.h" #include <bits/stdc++.h> using namespace std; long long count_swaps(std::vector<int> s) { if(s.size()==2)return s[0]>s[1]; long long n=s.size(); n/=2; return n*(n-1)/2; }
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