Submission #142847

#	Time	Username	Problem	Language	Result	Execution time	Memory
142847		babo	Ancient Books (IOI17_books)	C++14	0 / 100	2 ms	376 KiB

books

#include <bits/stdc++.h>
#define inf 1000000000000000000ll
#define ab(x) ((x)>0?(x):-(x))
#define L long long

using namespace std;

L n;
L chk[1000010];

L minimum_walk(vector<int>p,int s){
	L i,ret=0,las=0;
	n=p.size();
	for(i=0;i<n;i++)
	{
		if(!chk[i]&&p[i]!=i)
		{
			las=i;
			L temp=p[i];
			ret+=ab(p[i]-i);
			chk[temp]=1;
			while(temp!=i)
			{
				ret+=ab(p[temp]-temp);
				temp=p[temp];
				chk[temp]=1;
			}
		}
	}
	return ret+las*2;
}

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