제출 #775867

#제출 시각아이디문제언어결과실행 시간메모리
775867PoonYaPatAncient Books (IOI17_books)C++14
0 / 100
1 ms212 KiB
#include "books.h" #include <bits/stdc++.h> using namespace std; typedef long long ll; ll ans=0,cnt[1000005]; ll minimum_walk(vector<int> p, int s) { int n=p.size(); for (int i=0; i<n; ++i) { ++cnt[min(i,p[i])]; --cnt[max(i,p[i])]; } for (int i=1; i<n; ++i) cnt[i]+=cnt[i-1]; for (int i=0; i<n-1; ++i) { ans+=cnt[i]; if (cnt[i]==0) ans+=2; } return ans; }
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