제출 #120033

#제출 시각아이디문제언어결과실행 시간메모리
120033dsjongAncient Books (IOI17_books)C++14
22 / 100
139 ms22904 KiB
#include "books.h"
#include <bits/stdc++.h>
using namespace std;
bool vis[1005];
long long minimum_walk(vector<int> p, int s) {
	int n=p.size();
	long long ans=0;
	for(int i=0;i<n;i++){
		ans+=abs(i-p[i]);
		for(int j=min(i,p[i])+1;j<=max(i,p[i]);j++){
			vis[j]=true;
		}
	}
	int k=-1;
	for(int i=n-1;i>=0;i--){
		if(p[i]!=i){
			k=i;
			break;
		}
	}
	k++;
	for(int i=1;i<k;i++){
		if(!vis[i]){
			ans+=2;
		}
	}
	return ans;
}
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