Submission #383680

#	Time	Username	Problem	Language	Result	Execution time	Memory
383680		wlh_code	Combo (IOI18_combo)	C++17	10 / 100	71 ms	524 KiB

combo

#include "combo.h"
using namespace std;
string guess_sequence (int N) {
	string keys = "ABXY"; string s;
	for (int i = 0; i < 4; ++i) {
		string t; t += keys[i];
		if (press(t)) {
			s += keys[i];
			keys.erase(keys.begin() + i);
			break;
		}
	}
	for (int i = 1; i < N; ++i) {
		for (int j = 0; j < 3; ++j) {
			string t = s; t += keys[j];
			if (press(t) > i) {
				s += keys[j];
				break;
			}
		}
	}
	return s;
}

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