Submission #650738

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
650738	2022-10-15 03:27:35	erke	Combo (IOI18_combo)	C++11	100 / 100	36 ms	692 KiB

combo

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#include <bits/stdc++.h>
using namespace std;
int press(string p);
string guess_sequence(int n) {
    vector<char> v = {'A', 'B', 'X', 'Y'};
    string ret;
    if (press("AB")) {
        if (press("A")) {
            ret += 'A';
            swap(v[0], v[3]);
        }
        else {
            ret += 'B';
            swap(v[1], v[3]);
        }
    }
    else {
        if (press("X")) {
            ret += 'X';
            swap(v[2], v[3]);
        }
        else {
            ret += 'Y';
            // swap(v[3], v[3]);
        }
    }
    while ((int) ret.size() < n - 1) {
        string tmp = ret + v[0];
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 95 / 95