Submission #445489

#	Time	Username	Problem	Language	Result	Execution time	Memory
445489		PiejanVDC	Combo (IOI18_combo)	C++17	10 / 100	73 ms	576 KiB

combo

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

string guess_sequence(int n) {
    //for the first character
    string s="";
    if(press("A")) {
        s+='A';
    }
    else if(press("B")) {
        s+='B';
    } else if(press("X")) {
        s+='X';
    } else {
        s+='Y';
    }
    vector<char>str={'A','B','X','Y'};
    while(s.length() < n) {
        for(auto z : str) {
            if(z != s[0]) {
                string prev = s;
                s+=z;
                if(press(s) == s.length()) {
                    break;
                }
                s=prev;
            }
        }
    }
    return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:19:22: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   19 |     while(s.length() < n) {
      |           ~~~~~~~~~~~^~~
combo.cpp:24:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |                 if(press(s) == s.length()) {
      |                    ~~~~~~~~~^~~~~~~~~~~~~

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