oj.uz

Submission #755937

# Submission time Handle Problem Language Result Execution time Memory
755937 2023-06-10T18:01:32 Z vjudge1 Password (RMI18_password) C++17
30 / 100
 659 ms 556 KB 
#include <bits/stdc++.h>
#include <fstream>
#include <iostream>
#include <sstream>
#include <string>
#include <stdlib.h>
#include <assert.h>
#include <bits/stdc++.h>
using namespace std;

#define DEBUG 0
#define MAX_QUERIES 50000
#define MAX_N 5000
#define MAX_SIGMA 26

static string password;
static int n, s, numQueries;
static stringstream msg;

/*static void end(int success) {
  cout << (success ? "SUCCESS! " : "ERROR: ") << msg.str() << endl;
  exit(0);
}

int query(string q) {
  if (++numQueries > MAX_QUERIES) {
    msg << "Could not guess the password with " << MAX_QUERIES << " questions.";
    end(0);
  }

  int len = q.size();

  // validation
  if (len < 1 || len > n) {
    msg << "Query '" << q << "' should have length between 1 and "
        << n << " characters.";
    end(0);
  }

  for (int i = 0; i < len; i++) {
    if (q[i] < 'a' || q[i] >= 'a' + s) {
      msg << "Illegal character '" << q[i] << "' found.";
      end(0);
    }
  }

  // while possible, advance one character in q and find its next
  // occurrence in password
  int i = 0, j = 0, plen = password.size();
  while (i < plen && j < len) {
    while ((i < plen) && (password[i] != q[j])) {
      i++;
    }
    if (i < plen) {  
      i++;
      j++;
    }
  }

  if (DEBUG) {
    cout << "Question #" << numQueries << " [" << q << "] answer " << j << endl;
  }
  return j;
}*/
int query(string q);
string guess(int n, int s){
    string res="";
    int sum=0;
    int cur=0;
    while(cur<n)
    {
        bool test=false;
        for (int i = 0; i < s; ++i)
        {
            string t="";
            char x=char(i+'a');
            for (int i = 0; i < cur; ++i)
            {
                t.push_back(res[i]);
            }t.push_back(x);
            for (int i = cur; i < res.size(); ++i)
            {
                t.push_back(res[i]);
            }
            if (t.size()>n) break;
            if (query(t)>sum){
                sum++;
                test=true;
                res="";
                for (int i = 0; i < t.size(); ++i)
                {
                    res.push_back(t[i]);
                }
                break;
            }
        }
        if(!test) cur++;
    }
    //cout<< sum<<endl;
    return res;
}

/*int main() {
    #ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif
  //ifstream f("password.in");
  cin >> n >> s >> password;
    //f.close();
  assert(n && s && !password.empty());

  string answer = guess(n, s);
  if (DEBUG) {
    cout << "Your answer: [" << answer << "]\n";
  }

  if (answer.compare(password)) {
    msg << "Your answer was [" << answer
        << "] which does not match the password [" << password << "].";
    end(0);
  } else {
    msg << "You guessed the password with " << numQueries << " queries.";
    end(1);
  }

    return 0;
}*/

Compilation message

password.cpp: In function 'std::string guess(int, int)':
password.cpp:81:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |             for (int i = cur; i < res.size(); ++i)
      |                               ~~^~~~~~~~~~~~
password.cpp:85:25: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   85 |             if (t.size()>n) break;
      |                 ~~~~~~~~^~
password.cpp:90:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   90 |                 for (int i = 0; i < t.size(); ++i)
      |                                 ~~^~~~~~~~~~
password.cpp: At global scope:
password.cpp:17:18: warning: 'numQueries' defined but not used [-Wunused-variable]
   17 | static int n, s, numQueries;
      |                  ^~~~~~~~~~
password.cpp:17:15: warning: 's' defined but not used [-Wunused-variable]
   17 | static int n, s, numQueries;
      |               ^
password.cpp:17:12: warning: 'n' defined but not used [-Wunused-variable]
   17 | static int n, s, numQueries;
      |            ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 208 KB Guessed the password with 315 queries.
2 Correct 9 ms 208 KB Guessed the password with 736 queries.

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 208 KB Guessed the password with 166 queries.
2 Correct 4 ms 208 KB Guessed the password with 306 queries.
3 Correct 4 ms 208 KB Guessed the password with 512 queries.
4 Correct 8 ms 208 KB Guessed the password with 668 queries.

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 206 ms 420 KB Guessed the password with 20159 queries.
2 Correct 374 ms 328 KB Guessed the password with 29497 queries.
3 Correct 552 ms 544 KB Guessed the password with 44816 queries.
4 Incorrect 659 ms 556 KB Could not guess the password with 50000 queries.
5 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 208 KB Guessed the password with 315 queries.
2 Correct 9 ms 208 KB Guessed the password with 736 queries.
3 Correct 2 ms 208 KB Guessed the password with 166 queries.
4 Correct 4 ms 208 KB Guessed the password with 306 queries.
5 Correct 4 ms 208 KB Guessed the password with 512 queries.
6 Correct 8 ms 208 KB Guessed the password with 668 queries.
7 Correct 206 ms 420 KB Guessed the password with 20159 queries.
8 Correct 374 ms 328 KB Guessed the password with 29497 queries.
9 Correct 552 ms 544 KB Guessed the password with 44816 queries.
10 Incorrect 659 ms 556 KB Could not guess the password with 50000 queries.
11 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 208 KB Guessed the password with 315 queries.
2 Correct 9 ms 208 KB Guessed the password with 736 queries.
3 Correct 2 ms 208 KB Guessed the password with 166 queries.
4 Correct 4 ms 208 KB Guessed the password with 306 queries.
5 Correct 4 ms 208 KB Guessed the password with 512 queries.
6 Correct 8 ms 208 KB Guessed the password with 668 queries.
7 Correct 206 ms 420 KB Guessed the password with 20159 queries.
8 Correct 374 ms 328 KB Guessed the password with 29497 queries.
9 Correct 552 ms 544 KB Guessed the password with 44816 queries.
10 Incorrect 659 ms 556 KB Could not guess the password with 50000 queries.
11 Halted 0 ms 0 KB -