Submission #616339

#	Time	Username	Problem	Language	Result	Execution time	Memory
616339		chirathnirodha	Ancient Books (IOI17_books)	C++17	12 / 100	1 ms	304 KiB

books

#include "books.h"
#include<bits/stdc++.h>
using namespace std;
#define PB push_back
#define MP make_pair
typedef long long ll;

long long minimum_walk(vector<int> p, int s) {
	int jumbco=0;
	int lastjumb=0;
	int n=p.size();
	bool isswap=false;
	for(int i=0;i<n;i++){
		if(p[p[i]]==i)isswap=true;
		if(p[i]!=i){
			jumbco++;
			lastjumb=i;
		}
	}
	if(jumbco==4){
		if((p[2]==1 && p[1]==3)||(p[1]==2 && p[2]==0)||isswap)return 8;
		else return 6;
	}
	return lastjumb*2;
}

• Subtask 1: 12 / 12
• Subtask 2: 0 / 10
• Subtask 3: 0 / 28
• Subtask 4: 0 / 20
• Subtask 5: 0 / 30