Submission #728882

#	Time	Username	Problem	Language	Result	Execution time	Memory
728882		Toxtaq	Combo (IOI18_combo)	C++17	30 / 100	43 ms	472 KiB

combo

#include <bits/stdc++.h>
using namespace std;
int press(std::string p);

std::string guess_sequence(int N){
    int n = N;
    string res = "", s;
    if(press("A")){
        res += 'A';
        s = "BXY";
    }
    else if(press("B")){
        res += 'B';
        s = "AXY";
    }
    else if(press("X")){
        res += 'X';
        s = "ABY";
    }
    else{
        res += 'Y';
        s = "ABX";
    }
    for(int i = 1;i < n;++i){
        bool ok = 0;
        for(int j = 0;j < 2;++j){
            res += s[j];
            if(press(res) == res.size()){
                ok = 1;
                break;
            }
            res.pop_back();
        }
        if(!ok){
            res += s[2];
        }
    }
    return res;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:28:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |             if(press(res) == res.size()){
      |                ~~~~~~~~~~~^~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 25 / 95