Submission #756166

#	Time	Username	Problem	Language	Result	Execution time	Memory
756166		thinknoexit	Combo (IOI18_combo)	C++17	5 / 100	1 ms	208 KiB

combo

#include "combo.h"
#include <iostream>
using namespace std;
string guess_sequence(int N) {
  string ans = "";
  string p = "";
  if (press("AB")) {
    if (press("A")) ans = "A", p = "BXY";
    else ans = "B", p = "AXY";
  }
  else {
    if (press("X")) ans = "X", p = "ABY";
    else ans = "Y", p = "ABX";
  }
  while (ans.size() != N - 1) {
    int t = press(ans + p[0] + ans + p[1] + p[0] + ans + p[1] + p[1] + ans + p[1] + p[2]);
    if (ans.size() == t - 1) ans += p[0];
    else if (ans.size() == t - 2) ans += p[1];
    else ans += p[2];
  }
  if (ans.size() != press(ans + p[0])) ans += p[0];
  else if (ans.size() != press(ans + p[1])) ans += p[1];
  else ans += p[2];
  return ans;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:15:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   15 |   while (ans.size() != N - 1) {
      |          ~~~~~~~~~~~^~~~~~~~
combo.cpp:17:20: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   17 |     if (ans.size() == t - 1) ans += p[0];
      |         ~~~~~~~~~~~^~~~~~~~
combo.cpp:18:25: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   18 |     else if (ans.size() == t - 2) ans += p[1];
      |              ~~~~~~~~~~~^~~~~~~~
combo.cpp:21:18: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   21 |   if (ans.size() != press(ans + p[0])) ans += p[0];
      |       ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
combo.cpp:22:23: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   22 |   else if (ans.size() != press(ans + p[1])) ans += p[1];
      |            ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~

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