Submission #756779

#	Time	Username	Problem	Language	Result	Execution time	Memory
756779		andrei_marciuc	Combo (IOI18_combo)	C++14	5 / 100	1 ms	220 KiB

combo

#include <iostream>
#include <cstring>
#include "combo.h"
using namespace std;

string guess_sequence( int N ) {
    string s, rest;
    if( press( "AB" ) > 0 )
        if( press( "A" ) == 1 ) {
            s = "A";
            rest = "BXY";
        } else {
            s = "B";
            rest = "AXY";
        }
    else if( press( "X" ) == 1 ) {
            s = "X";
            rest = "ABY";
        } else {
            s = "Y";
            rest = "ABX";
        }

    while( s.size() < N - 1 ) {
        int length = press( s + rest[ 0 ] + s + rest[ 1 ] + rest[ 0 ] + s + rest[ 1 ] + rest[ 1 ] + s + rest[ 1 ] + rest[ 2 ] );
        if( s.size() == length - 1 )
            s = s + rest[ 0 ];

        else if( s.size() == length - 2 )
                s = s + rest[ 1 ];
            else s = s + rest[ 2 ];
    }

    if( s.size() != press( s + rest[ 0 ] ) )
        s = s + rest[ 0 ];
    else if( s.size() != press( s + rest[ 1 ] ) )
            s = s + rest[ 1 ];
        else s = s + rest[ 2 ];
        
    return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:24:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   24 |     while( s.size() < N - 1 ) {
      |            ~~~~~~~~~^~~~~~~
combo.cpp:26:22: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   26 |         if( s.size() == length - 1 )
      |             ~~~~~~~~~^~~~~~~~~~~~~
combo.cpp:29:27: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   29 |         else if( s.size() == length - 2 )
      |                  ~~~~~~~~~^~~~~~~~~~~~~
combo.cpp:34:18: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   34 |     if( s.size() != press( s + rest[ 0 ] ) )
      |         ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
combo.cpp:36:23: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   36 |     else if( s.size() != press( s + rest[ 1 ] ) )
      |              ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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