Submission #624605

#	Time	Username	Problem	Language	Result	Execution time	Memory
624605		Siffer	Combo (IOI18_combo)	C++14	100 / 100	33 ms	576 KiB

combo

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

string guess_sequence(int n) {
    string s = "";
    string c = "";
    if(press("AB")) {
        if(press("A")) c = "BXY", s = "A";
        else c = "AXY", s = "B";
    } else {
        if(press("X")) c = "ABY", s = "X";
        else c = "ABX", s = "Y";
    }
    if(n == 1) return s;
    for(int i = 1; i < n-1; i++) {
        int k = press(s+c[0]+c[0]+s+c[0]+c[1]+s+c[0]+c[2]+s+c[1]);
        if(k == i+2) s += c[0];
        if(k == i+1) s += c[1];
        if(k == i) s += c[2];
    }
    if(press(s+c[0]) == n) return s + c[0];
    if(press(s+c[1]) == n) return s + c[1];
    return s + c[2];
}

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