Submission #76366

#	Time	Username	Problem	Language	Result	Execution time	Memory
76366		Sherazin	Cave (IOI13_cave)	C++14	0 / 100	65 ms	512 KiB

cave

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

using namespace std;

const int N = 5e3+5;

int n;
bitset<N> chk;
int S[N], D[N];

void exploreCave(int _n) {
	n = _n;
	int t;
	for(int i = 0; i < n; i++) {
		t = tryCombination(S);
		bool s = (t == -1 || t > i);
		int l = 0, r = n-1;
		while(l < r) {
			int m = (l+r) >> 1;
			for(int j = l; j <= r; j++) if(!chk[j]) S[j] ^= 1;
			int a = tryCombination(S), e = (a == -1 || a > i);
			if(t ^ a) r = m;
			else l = m+1;
		}
		if(t == i) S[l] ^= 1;
		chk[l] = 1;
		D[l] = i;
	}
	answer(S, D);
}

Compilation message (stderr)

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:22:31: warning: unused variable 'e' [-Wunused-variable]
    int a = tryCombination(S), e = (a == -1 || a > i);
                               ^
cave.cpp:17:8: warning: unused variable 's' [-Wunused-variable]
   bool s = (t == -1 || t > i);
        ^

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