Submission #523421

#	Time	Username	Problem	Language	Result	Execution time	Memory
523421		dron_rp	Combo (IOI18_combo)	C++14	10 / 100	62 ms	440 KiB

combo

#include "combo.h"
#include <set>
#include <iostream>

using namespace std;

string guess_sequence(int N) {
    string S = "";
    set<char> a = {'A', 'B', 'X', 'Y'};
    string p = "";
    for (auto& c : a){
        p = "";
        p += c;
        int coins = press(p);
        if (coins == 1){
            S += c;
            a.erase(c);
            break; 
        }
    }
    while ((int) S.size() < N){
        for (auto& c : a){
            p = S;
            p += c;
            int coins = press(p);
            if (coins == (int) S.size()+1){
                S += c;
                break;
            } 
        }
    }
    return S;
}

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