Submission #834092

#	Time	Username	Problem	Language	Result	Execution time	Memory
834092		EntityPlantt	Combo (IOI18_combo)	C++14	10 / 100	46 ms	464 KiB

combo

#include "combo.h"
using namespace std;
string guess_sequence(int n) {
    string s;
    if (press("A")) s = "A";
    else if (press("B")) s = "B";
    else if (press("X")) s = "X";
    else s = "Y";
    while (s.size() < n) {
        if (s[0] != 'A' && press(s + 'A') > s.size()) s += 'A';
        else if (s[0] != 'B' && press(s + 'B') > s.size()) s += 'B';
        else if (s[0] != 'C' && press(s + 'X') > s.size()) s += 'X';
        else s += 'Y';
    }
    return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:9:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
    9 |     while (s.size() < n) {
      |            ~~~~~~~~~^~~
combo.cpp:10:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |         if (s[0] != 'A' && press(s + 'A') > s.size()) s += 'A';
      |                            ~~~~~~~~~~~~~~~^~~~~~~~~~
combo.cpp:11:48: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |         else if (s[0] != 'B' && press(s + 'B') > s.size()) s += 'B';
      |                                 ~~~~~~~~~~~~~~~^~~~~~~~~~
combo.cpp:12:48: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |         else if (s[0] != 'C' && press(s + 'X') > s.size()) s += 'X';
      |                                 ~~~~~~~~~~~~~~~^~~~~~~~~~

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