제출 #1263412

#제출 시각아이디문제언어결과실행 시간메모리
1263412aren_dance동굴 (IOI13_cave)C++20
0 / 100
312 ms588 KiB
#include <iostream>
#include <vector>
#include "cave.h"
using namespace std;
void exploreCave(int N) {
	int s[N];
	int d[N];
	for (int i = 0;i < N;++i) {
		int p[N] = { 0 };
		vector<int> k;
		vector<bool> mas(N,0);
		for (int j = 0;j < i;++j) {
			p[d[j]] = s[j];
			mas[d[j]] = 1;
		}
		for (int j = 0;j < N;++j) {
			if (!mas[j]) {
				k.push_back(j);
				p[j] = 0;
			}
		}
		int v = tryCombination(p);
		int x = 1;
		if (v == -1 || v >= i) {
			x = 0;
		}
		s[i] = x;
		int r = k.size()-1;
		int l = 0;
		int answ = N-1;
		while (l <= r){
			int m = (l + r) / 2;
			for (int j = 0;j <= m;++j) {
				p[k[j]] = x;
			}
			for (int j = 0;j < i;++j) {
				p[d[j]] = s[j];
			}
			int u = tryCombination(p);
			if (u >= i || u==-1) {
				r = m - 1;
				answ = m;
			}
			else {
				l = m + 1;
			}
		}
		d[i] = answ;
	}
	answer(s,d);
}
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