Submission #1039064

#	Time	Username	Problem	Language	Result	Execution time	Memory
1039064		VMaksimoski008	Combo (IOI18_combo)	C++17	30 / 100	35 ms	1200 KiB

combo

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


string guess_sequence(int N) {
    string S = "";

    if(press("XY")) {
        if(press("X")) S += 'X';
        else S += 'Y';
    } else if(press("A")) {
        S += 'A';
    } else {
        S += 'B';
    }

    vector<char> vec;
    for(auto &ch : {'A', 'B', 'X', 'Y'}) if(ch != S[0]) vec.push_back(ch);

    //press(p) dava dolzina na najdolg prefix na S sto e substring na p
    while(S.size() < N) {
        if(press(S + vec[0] + S + vec[1]) == S.size()) {
            S += vec[2];
        } else {
            if(press(S + vec[0]) == S.size() + 1) S += vec[0];
            else S += vec[1];
        }
    }

    return S;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:22:20: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   22 |     while(S.size() < N) {
      |           ~~~~~~~~~^~~
combo.cpp:23:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |         if(press(S + vec[0] + S + vec[1]) == S.size()) {
      |            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
combo.cpp:26:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |             if(press(S + vec[0]) == S.size() + 1) S += vec[0];
      |                ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~

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