Submission #289245

#	Time	Username	Problem	Language	Result	Execution time	Memory
289245		wdjpng	Ancient Books (IOI17_books)	C++17	0 / 100	0 ms	384 KiB

books

#include <bits/stdc++.h>
#include "books.h"

#define rep(i,n) for(int i = 0; i < n; i++)
#define lint long long
using namespace std;
vector<int>P;
vector<bool>vis;
int dfs(int v)
{
	if(vis[v]) return 0;
	vis[v]=true;
	return abs(v - P[v]) + dfs(P[v]);
}

long long minimum_walk(std::vector<int> p, int s) {

	int n = p.size();

	while(p[0]==2||p[0]==1){
		s++;
	}
	vis.resize(n);
	P=p;
	int count=0;
	int numComp=0;
	rep(i, n)
	{
		if(vis[i]){continue;}
		numComp++;
		count+=dfs(i);
	}

	return count+2*(numComp-1);
}

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