Submission #1124355

#	Time	Username	Problem	Language	Result	Execution time	Memory
1124355		Rainmaker2627	Cave (IOI13_cave)	C++20	0 / 100	74 ms	324 KiB

cave

#include<bits/stdc++.h>
#include "cave.h"
using namespace std;

void exploreCave(int N) {
	int s[N], d[N];
	for (int i = 0; i < N; ++i) d[i]=-1;
	for (int i = 0; i < N; ++i) {
		int cor;
		vector<int> p;
		for (int j = 0; j < N; ++j) if (d[j]==-1) p.push_back(j);
		for (int j = 0; j < N-i; ++j) s[p[j]]=0;
		if (tryCombination(s)==i) cor=1;
		else cor=0;
		for (int j = 0; j < N-i; ++j) s[p[j]]=1-cor;

		int l=0, r=N-i-1;
		while (l<r) {
			int mid=(l+r)/2;
			for (int i = l; i <= mid; ++i) s[i]=cor;
			int res=tryCombination(s);
			for (int i = l; i <= mid; ++i) s[i]=1-cor;
			if (res==i) l=mid+1;
			else r=mid;
		} d[r]=i; s[r]=cor;
	} answer(s, d);
}

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