Submission #959744

#	Time	Username	Problem	Language	Result	Execution time	Memory
959744		12345678	Ancient Books (IOI17_books)	C++17	0 / 100	0 ms	600 KiB

books

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

using namespace std;

#define ll long long

const int nx=1e6+5;

int vs[nx], n, lst;
ll res;

long long minimum_walk(std::vector<int> p, int s) {
    n=p.size();
    for (int i=0; i<n; i++) vs[i]=0;
    res=0;
    for (int i=0; i<n; i++)
    {
        if (vs[i]||p[i]==i) continue;
        lst=i;
        vs[i]=1;
        int cur=i;
        while (p[cur]!=i) res+=abs(p[cur]-cur), cur=p[cur], vs[cur]=1;
        res+=abs(p[cur]-cur);
    }
	return res+2*lst;
}

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