제출 #357684

#제출 시각아이디문제언어결과실행 시간메모리
357684tengiz05고대 책들 (IOI17_books)C++17
50 / 100
147 ms8172 KiB
#include"books.h"
#ifndef EVAL
#include "grader.cpp"
#endif
#include<bits/stdc++.h>
using namespace std;
long long minimum_walk(vector<int> a,int s){
	int n=a.size();
	while(a[n-1]==n-1)n--;
	long long ans=0;
	for(int i=0;i<n;i++)ans+=abs(i-a[i]);
	int pivot=0;
	for(int i=0;i<n-1;i++){
		pivot=max(pivot,a[i]);
		if(i==pivot)ans+=2;
	}
	return ans;
}
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