Submission #1185582

#	Time	Username	Problem	Language	Result	Execution time	Memory
1185582		rhm_gan	콤보 (IOI18_combo)	C++20	100 / 100	7 ms	484 KiB

combo

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

#ifdef LOCAL
#include "debug.h"
#else
#define dbg(...) 42
#endif

int press(string p);

string guess_sequence(int n) {
	string res;

	vector<string> v;
	if (press("AB") != 0) {
		if (press("A") == 1) {
			res += 'A';
			v = {"B", "X", "Y"};
		}
		else {
			res += 'B';
			v = {"A", "X", "Y"};
		}
	}
	else {
		if (press("X") == 1) {
			res += 'X';
			v = {"A", "B", "Y"};
		} 
		else {
			res += 'Y';
			v = {"A", "B", "X"};
		}
	}

	if (n == 1) {
		return res;
	}

	for (int i = 1; i < n - 1; i++) {
		string s = res + v[0] + v[1] + res + v[0] + v[2] + res + v[0] + v[0] + res + v[1];
		int x = press(s);
		if (x == i + 2) {
			res += v[0];
		}
		if (x == i + 1) {
			res += v[1];
		}
		if (x == i) {
			res += v[2];
		}
	}

	if (press(res + v[0]) == n) {
		res += v[0];
	}
	else if (press(res + v[1]) == n) {
		res += v[1];
	}
	else {
		res += v[2];
	}

	return res;
}

• Subtask 1: 5 / 5
• Subtask 2: 95 / 95