Submission #305191

#	Time	Username	Problem	Language	Result	Execution time	Memory
305191		Temmie	Cave (IOI13_cave)	C++17	100 / 100	1397 ms	788 KiB

cave

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

void exploreCave(int n) {
	int a[69420];
	int ans[60420];
	std::vector <int> b(n), vis(n, 0);
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) if (!vis[j]) a[j] = 0;
		int cur = tryCombination(a);
		int now = cur == -1 || cur > i ? 0 : 1;
		int l = 0, r = n - 1;
		while (l <= r) {
			int mid = (l + r) >> 1;
			for (int j = 0; j < n; j++) if (!vis[j]) a[j] = j <= mid ? now : 1 - now;
			int comp = tryCombination(a);
			if (comp == -1 || comp > i) b[i] = mid, r = mid - 1;
			else l = mid + 1;
		}
		a[b[i]] = now;
		vis[b[i]] = 69;
		ans[b[i]] = i;
	}
	answer(a, ans);
	
}

• Subtask 1: 12 / 12
• Subtask 2: 13 / 13
• Subtask 3: 21 / 21
• Subtask 4: 30 / 30
• Subtask 5: 24 / 24