Submission #370956

#	Time	Username	Problem	Language	Result	Execution time	Memory
370956		KoD	Ancient Books (IOI17_books)	C++17	0 / 100	1 ms	492 KiB

books

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

template <class T>
using Vec = std::vector<T>;

long long minimum_walk(Vec<int> p, int s) {
	assert(s == 0);
	const int n = (int) p.size();
	Vec<bool> done(n);
	long long ret = 0;
	int max = 0;
	for (int i = 0; i < n; ++i) {
		ret += std::abs(p[i] - i);
		if (!done[i]) {
			max = std::max(max, i);
			int u = i;
			while (!done[u]) {
				done[u] = true;
				u = p[u];
			}
		}
	}
	return ret + 2 * max;
}

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