Submission #764613

#	Time	Username	Problem	Language	Result	Execution time	Memory
764613		hfoliacots	Cave (IOI13_cave)	C++14	0 / 100	1 ms	340 KiB

cave

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

void exploreCave(int N) {
	using namespace std;
	
    int s[N], d[N];
    vector<bool> vis(N, false);
    memset(s, 0, sizeof s);
    memset(d, 0, sizeof d);
    int pant, p = tryCombination(s);
    int l = 0, r = N-1, mid = (l+r)/2;
    for (int k = 0; k < N; k++) {
		while (l < r) {
			for (int i = l; i <= mid; i++) {
				if (!vis[i]) s[i] = !s[i];
			}
			pant = p;
			p = tryCombination(s);
			if (p == k && pant == k) l = mid+1;
			else if (p != k && pant != k) l = mid+1;
			else r = mid;
			
			mid = (l+r)/2;
		}
		d[r] = k;
		vis[r] = true;
		if (p == k) s[r] = !s[r];
	}
	answer(s, d);
}

• Subtask 1: 0 / 12
• Subtask 2: 0 / 13
• Subtask 3: 0 / 21
• Subtask 4: 0 / 30
• Subtask 5: 0 / 24