제출 #901403

#제출 시각아이디문제언어결과실행 시간메모리
901403nxteru고대 책들 (IOI17_books)C++14
50 / 100
88 ms15336 KiB
#include <bits/stdc++.h>
using namespace std;
using ll =long long;
ll minimum_walk(vector<int>p, int s){
	int n=p.size();
	ll ans=0;
	for(int i=0;i<n;i++){
		ans+=abs(p[i]-i);
	}
	int r=n-1;
	while(r>=0&&p[r]==r)r--;
	int ma=0;
	for(int i=0;i<r;i++){
		ma=max(ma,p[i]);
		if(ma<=i)ans+=2;
	}
	return ans;
}
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