Submission #125370

#	Time	Username	Problem	Language	Result	Execution time	Memory
125370		khulegub	Cave (IOI13_cave)	C++14	12 / 100	330 ms	516 KiB

cave

#include "cave.h"
#include <bits/stdc++.h>
int n;
bool lock[5005];
int s[5005], d[5005];
void soli(int l, int r){
	for (int i = l; i <= r; i++) if(!lock[i]) s[i] = (s[i] ? 0 : 1); 
}
void exploreCave(int N) {
	n = N;
	memset(s, 0, sizeof s);
	for (int i = 0; i < n; i++){
		if(tryCombination(s) == i) soli(0, n - 1);
		int l = 0, r = n - 1;
		while (l != r){
			int mid = (l + r) >> 1;
			soli(l, mid);
			int tmp = tryCombination(s);
			soli(l, mid);
			if(tmp == i){ //zuun tald
				r = mid;
			}
			else{ //baruun tald
				l = mid + 1;
			}
		}
		d[i] = l;
		lock[l] = 1;
	}
	answer(s, d);
}

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