Submission #926390

#	Time	Username	Problem	Language	Result	Execution time	Memory
926390		HaciyevAlik	Combo (IOI18_combo)	C++14	5 / 100	2 ms	696 KiB

combo

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

string guess_sequence(int N) {
    char arr[4] = {'A','B','X','Y'};
    string temp="";
    char ex;
    if(press("A")) {
        ex='A';
    } else if(press("B")) {
        ex='B';
    } else if(press("X")) {
        ex='X';
    } else {
        ex='Y';
    }
    temp += ex;
    vector<char> c;
    for(int i=0;i<4;++i){
        if(arr[i]!=ex) c.push_back(arr[i]);
    }
    for(int i=1;i<N-2;++i) {
        string cur=temp;
        cur+=c[0];
        cur+=temp;
        cur+=c[1]; cur+=c[0];
        cur+=temp;
        cur+=c[1]; cur+=c[1];
        cur+=temp;
        cur+=c[1]; cur+=c[2];
        int p=press(cur);
        if(p == int(temp.size())) {
            temp += c[2];
        } else if(p == int(temp.size())+1) {
            temp += c[0];
        } else {
            temp += c[1];
        }
    }
    for(int i=0;i<3;++i) {
        for(int j=0;j<3;++j) {
            string cur=temp;
            cur += c[i];
            cur += c[j];
            if(press(cur) == int(temp.size())+2) {
                return cur;
            }
        }
    }
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:7:17: warning: control reaches end of non-void function [-Wreturn-type]
    7 |     string temp="";
      |                 ^~

• Subtask 1: 5 / 5
• Subtask 2: 0 / 95