Submission #611872

#	Time	Username	Problem	Language	Result	Execution time	Memory
611872		Shithila	Ancient Books (IOI17_books)	C++14	0 / 100	1 ms	288 KiB

books

#include "books.h"


long long minimum_walk(std::vector<int> p, int s) {
	int len=p.size();
	int correct=true;
	int count=0;
	for(int i=len-1;i>0;i--)
	{
		if(p[i]!=i)
		{
			correct=false;
			break;
		}
		count++;
	}
	if(correct==true) return 0;
	else if(count==0 && len>3)
	{
		correct=true;
		for(int i=len-1;i>0;i--)
	{
		if(p[i]!=len-i-1)
		{
			correct=false;
			break;
		}
	}
	if(correct==false)
	{
		int ans=len-count-1;
		ans=ans+ans;
		return ans;
	}
	else return 2*len;
	}
	else
	{
		int ans=len-count-1;
		ans=ans+ans;
		return ans;
	}
}

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