Submission #773143

#	Time	Username	Problem	Language	Result	Execution time	Memory
773143		aykhn	Password (RMI18_password)	C++14	0 / 100	2 ms	464 KiB

password

#include <bits/stdc++.h>

// author: aykhn

using namespace std;

typedef long long ll;

int query(string str);

string guess(int n, int s)
{
    string ans = "";
    int prev;

    string x = "a";
    for (int i = 0; i < s; i++)
    {
        ans = x + ans;
        int X = query(ans);
        prev = max(X, prev);
        if (!X) ans = ans.substr(1, (int)(ans.length()) - 1);

        for (int j = 1; j <= ans.length(); j++)
        {
            string asd = ans.substr(0, j);
            string assd = (j != ans.length() ? ans.substr(j, (int)ans.length() - j) : "");
            ans = asd;
            asd += x;
            asd += assd;
            int y = query(ans);
            if (y <= prev)
            {
                asd = ans.substr(0, j);
                assd = (j + 1 != ans.length() ? ans.substr(j + 1, (int)ans.length() - j - 1) : "");
                ans = asd + assd;
            }
        }

        x[0]++;
    }

    return ans;
}

Compilation message (stderr)

password.cpp: In function 'std::string guess(int, int)':
password.cpp:24:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |         for (int j = 1; j <= ans.length(); j++)
      |                         ~~^~~~~~~~~~~~~~~
password.cpp:27:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |             string assd = (j != ans.length() ? ans.substr(j, (int)ans.length() - j) : "");
      |                            ~~^~~~~~~~~~~~~~~
password.cpp:35:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |                 assd = (j + 1 != ans.length() ? ans.substr(j + 1, (int)ans.length() - j - 1) : "");
      |                         ~~~~~~^~~~~~~~~~~~~~~
password.cpp:14:9: warning: 'prev' may be used uninitialized in this function [-Wmaybe-uninitialized]
   14 |     int prev;
      |         ^~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 30
• Subtask 5: 0 / 20