Submission #1052457

#	Time	Username	Problem	Language	Result	Execution time	Memory
1052457		mansur	Ancient Books (IOI17_books)	C++17	12 / 100	1 ms	444 KiB

books

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

using namespace std;

#define rall(s) s.rbegin(), s.rend()
#define all(s) s.begin(), s.end()
#define sz(s) (int)s.size()
#define s second
#define f first

using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

const int N = 3e5;

ll minimum_walk(vector<int> p, int s) {
	int n = sz(p), mx = 0;
	vector<int> was(n + 1), h[n];
	ll ans = 0;
	for (int i = 0; i < n; i++) {
		if (was[i] || i == p[i]) continue;
		int x = i, mn = n;
		while (!was[x]) {
			//h[i].push_back(x);
			mn = min(mn, x);
			was[x] = 1;
			ans += abs(p[x] - x);
			x = p[x];
		}
		mx = max(mx, mn);
		//sort(all(h[i]));
	}     
	return ans + mx + abs(mx - p[s]) - p[s];
	/*int val = N;
	for (int x = 0; x < n; x++) {
		int mx = 0;
		for (int i = 0; i < n; i++) {
			if (!sz(h[i])) continue;
			int ps = lower_bound(all(h[i]), x) - h[i].begin();
			if (ps == sz(h[i])) {
				mx = N;
				break;
			}
			mx = max(mx, h[i][ps]);
		}
		val = min(val, mx - x);
		cout << x << ' ' << mx << endl;
	}
	return ans + val * 2;*/
}

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