Submission #429436

#	Time	Username	Problem	Language	Result	Execution time	Memory
429436		illyakr	Combo (IOI18_combo)	C++14	100 / 100	48 ms	560 KiB

combo

    #include "combo.h"
    using namespace std;
     
    // A B X Y
    string guess_sequence(int N) {
        string ans = "";
        if (press("AB") >= 1) {
            if (press("A") == 1)ans = "A";
            else ans = "B";
        } else {
            if (press("X") == 1)ans = "X";
            else ans = "Y";
        }
        if (N == 1)return ans;
     
     
        while (ans.size() + 1 < N) {
            if (ans[0] == 'A') {
                int c = press(ans + "B" + ans + "XB" + ans + "XX" + ans + "XY");
                if (c == ans.size())ans.push_back('Y');
                else if (c == ans.size() + 1)ans.push_back('B');
                else if (c == ans.size() + 2)ans.push_back('X');
                continue;
            }
            if (ans[0] == 'B') {
                int c = press(ans + "A" + ans + "XA" + ans + "XX" + ans + "XY");
                if (c == ans.size())ans.push_back('Y');
                else if (c == ans.size() + 1)ans.push_back('A');
                else if (c == ans.size() + 2)ans.push_back('X');
                continue;
            }
            if (ans[0] == 'X') {
                int c = press(ans + "B" + ans + "AB" + ans + "AA" + ans + "AY");
                if (c == ans.size())ans.push_back('Y');
                else if (c == ans.size() + 1)ans.push_back('B');
                else if (c == ans.size() + 2)ans.push_back('A');
                continue;
            }
            if (ans[0] == 'Y') {
                int c = press(ans + "B" + ans + "AB" + ans + "AA" + ans + "AX");
                if (c == ans.size())ans.push_back('X');
                else if (c == ans.size() + 1)ans.push_back('B');
                else if (c == ans.size() + 2)ans.push_back('A');
                continue;
            }
        }
        if (press(ans + "A" + ans + "B") == ans.size() + 1) {
            if (press(ans + "A") == ans.size() + 1)ans.push_back('A');
            else ans.push_back('B');
        } else {
            if (press(ans + "X") == ans.size() + 1)ans.push_back('X');
            else ans.push_back('Y');
        }
        return ans;
    }
    /**
    */

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:17:31: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   17 |         while (ans.size() + 1 < N) {
      |                ~~~~~~~~~~~~~~~^~~
combo.cpp:20:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |                 if (c == ans.size())ans.push_back('Y');
      |                     ~~^~~~~~~~~~~~~
combo.cpp:21:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |                 else if (c == ans.size() + 1)ans.push_back('B');
      |                          ~~^~~~~~~~~~~~~~~~~
combo.cpp:22:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |                 else if (c == ans.size() + 2)ans.push_back('X');
      |                          ~~^~~~~~~~~~~~~~~~~
combo.cpp:27:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |                 if (c == ans.size())ans.push_back('Y');
      |                     ~~^~~~~~~~~~~~~
combo.cpp:28:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |                 else if (c == ans.size() + 1)ans.push_back('A');
      |                          ~~^~~~~~~~~~~~~~~~~
combo.cpp:29:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |                 else if (c == ans.size() + 2)ans.push_back('X');
      |                          ~~^~~~~~~~~~~~~~~~~
combo.cpp:34:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |                 if (c == ans.size())ans.push_back('Y');
      |                     ~~^~~~~~~~~~~~~
combo.cpp:35:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |                 else if (c == ans.size() + 1)ans.push_back('B');
      |                          ~~^~~~~~~~~~~~~~~~~
combo.cpp:36:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |                 else if (c == ans.size() + 2)ans.push_back('A');
      |                          ~~^~~~~~~~~~~~~~~~~
combo.cpp:41:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |                 if (c == ans.size())ans.push_back('X');
      |                     ~~^~~~~~~~~~~~~
combo.cpp:42:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |                 else if (c == ans.size() + 1)ans.push_back('B');
      |                          ~~^~~~~~~~~~~~~~~~~
combo.cpp:43:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |                 else if (c == ans.size() + 2)ans.push_back('A');
      |                          ~~^~~~~~~~~~~~~~~~~
combo.cpp:47:42: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |         if (press(ans + "A" + ans + "B") == ans.size() + 1) {
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
combo.cpp:48:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |             if (press(ans + "A") == ans.size() + 1)ans.push_back('A');
      |                 ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
combo.cpp:51:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |             if (press(ans + "X") == ans.size() + 1)ans.push_back('X');
      |                 ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~

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