oj.uz

Submission #336925

# Submission time Handle Problem Language Result Execution time Memory
336925 2020-12-17T10:32:40 Z blue Combo (IOI18_combo) C++11
5 / 100
 1 ms 256 KB 
#include "combo.h"
#include <iostream>
#include <string>
#include <vector>
using namespace std;

/*int press(string S)
{
    cout << S << '\n';
    int res;
    cin >> res;
    return res;
}*/

string guess_sequence(int N)
{
    string res;
    if(press("AB") >= 1)
    {
        res = (press("A") == 1 ? "A" : "B");
    }
    else
    {
        res = (press("X") == 1 ? "X" : "Y");
    }

    string query;
    int query_res;

    vector<string> C;
    for(string t: {"A", "B", "X", "Y"}) if(t != res) C.push_back(t);

    while(res.size() != N-1)
    {
        query.clear();

        query += res + C[0];
        query += res + C[1] + C[0];
        query += res + C[1] + C[1];
        query += res + C[1] + C[2];

        query_res = press(query);
        if(query_res == res.size())
        {
            res += C[2];
        }
        else if(query_res == res.size() + 1)
        {
            res += C[0];
        }
        else
        {
            res += C[1];
        }
    }

    if(press(res + C[0] + res + C[1]) == res.size())
    {
        res += C[2];
    }
    else
    {
        if(press(res + C[0]) == res.size() + 1)
        {
            res += C[0];
        }
        else
        {
            res += C[1];
        }
    }
    return res;
}

Compilation message

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:33:22: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   33 |     while(res.size() != N-1)
      |           ~~~~~~~~~~~^~~~~~
combo.cpp:43:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |         if(query_res == res.size())
      |            ~~~~~~~~~~^~~~~~~~~~~~~
combo.cpp:47:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |         else if(query_res == res.size() + 1)
      |                 ~~~~~~~~~~^~~~~~~~~~~~~~~~~
combo.cpp:57:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |     if(press(res + C[0] + res + C[1]) == res.size())
      |        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
combo.cpp:63:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |         if(press(res + C[0]) == res.size() + 1)
      |            ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 1 ms 200 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 0 ms 200 KB Output is correct
7 Correct 1 ms 200 KB Output is correct
8 Correct 1 ms 200 KB Output is correct
9 Correct 1 ms 200 KB Output is correct
10 Correct 1 ms 200 KB Output is correct
11 Correct 1 ms 200 KB Output is correct
12 Correct 1 ms 200 KB Output is correct
13 Correct 1 ms 256 KB Output is correct
14 Correct 1 ms 200 KB Output is correct
15 Correct 0 ms 200 KB Output is correct
16 Correct 1 ms 200 KB Output is correct
17 Correct 1 ms 200 KB Output is correct
18 Correct 1 ms 232 KB Output is correct
19 Correct 1 ms 200 KB Output is correct
20 Correct 1 ms 200 KB Output is correct
21 Correct 1 ms 200 KB Output is correct
22 Correct 1 ms 256 KB Output is correct
23 Correct 1 ms 200 KB Output is correct
24 Correct 0 ms 200 KB Output is correct
25 Correct 1 ms 256 KB Output is correct
26 Correct 1 ms 256 KB Output is correct
27 Correct 1 ms 256 KB Output is correct
28 Correct 1 ms 236 KB Output is correct
29 Correct 0 ms 200 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 1 ms 200 KB Output is correct
32 Correct 1 ms 200 KB Output is correct
33 Correct 1 ms 248 KB Output is correct
34 Correct 1 ms 200 KB Output is correct
35 Correct 1 ms 236 KB Output is correct
36 Correct 0 ms 256 KB Output is correct

Subtask #2
0 / 95.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 200 KB Wrong Answer: invalid press
2 Halted 0 ms 0 KB -