Submission #217795

#	Time	Username	Problem	Language	Result	Execution time	Memory
217795		kkm0476	Combo (IOI18_combo)	C++11	Compilation error	0 ms	0 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>

using namespace std;

int press(string a)
{
    return 0;
}

string guess_sequence(int N)
{
    string S;
    if (press("AB"))
    {
        if (press("A"))
            S = "A";
        else
            S = "B";
    }
    else
    {
        if (press("X"))
            S = "X";
        else
            S = "Y";
    }
    while (S.size() < N - 1)
    {
        int l;
        switch (S[0])
        {
        case 'A':
            l = press(S + "BB" + S + "BX" + S + "BY" + S + "X");
            if (l == S.size() + 2)
                S += "B";
            else if (l == S.size() + 1)
                S += "X";
            else
                S += "Y";
            break;
        case 'B':
            l = press(S + "AA" + S + "AX" + S + "AY" + S + "X");
            if (l == S.size() + 2)
                S += "A";
            else if (l == S.size() + 1)
                S += "X";
            else
                S += "Y";
            break;
        case 'X':
            l = press(S + "AA" + S + "AB" + S + "AY" + S + "B");
            if (l == S.size() + 2)
                S += "A";
            else if (l == S.size() + 1)
                S += "B";
            else
                S += "Y";
            break;
        case 'Y':
            l = press(S + "AA" + S + "AB" + S + "AX" + S + "B");
            if (l == S.size() + 2)
                S += "A";
            else if (l == S.size() + 1)
                S += "B";
            else
                S += "X";
            break;
        }
    }
    if (press(S + "A" + S + "B") == S.size())
    {
        if (press(S + "A"))
            S += "A";
        else
            S += "B";
    }
    else
    {
        if (press(S + "X"))
            S += "X";
        else
            S += "Y";
    }

    return S;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:28:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   28 |     while (S.size() < N - 1)
      |            ~~~~~~~~~^~~~~~~
combo.cpp:35:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |             if (l == S.size() + 2)
      |                 ~~^~~~~~~~~~~~~~~
combo.cpp:37:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |             else if (l == S.size() + 1)
      |                      ~~^~~~~~~~~~~~~~~
combo.cpp:44:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |             if (l == S.size() + 2)
      |                 ~~^~~~~~~~~~~~~~~
combo.cpp:46:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |             else if (l == S.size() + 1)
      |                      ~~^~~~~~~~~~~~~~~
combo.cpp:53:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |             if (l == S.size() + 2)
      |                 ~~^~~~~~~~~~~~~~~
combo.cpp:55:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |             else if (l == S.size() + 1)
      |                      ~~^~~~~~~~~~~~~~~
combo.cpp:62:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |             if (l == S.size() + 2)
      |                 ~~^~~~~~~~~~~~~~~
combo.cpp:64:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |             else if (l == S.size() + 1)
      |                      ~~^~~~~~~~~~~~~~~
combo.cpp:71:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |     if (press(S + "A" + S + "B") == S.size())
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
/usr/bin/ld: /tmp/ccCiBupP.o: in function `press(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)':
grader.cpp:(.text+0x0): multiple definition of `press(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)'; /tmp/cclF2QGQ.o:combo.cpp:(.text+0xc0): first defined here
collect2: error: ld returned 1 exit status