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Submission #756514

# Submission time Handle Problem Language Result Execution time Memory
756514 2023-06-11T18:51:02 Z ElyesChaabouni Password (RMI18_password) C++17
10 / 100
 402 ms 444 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
int query(string str);
 
string guess(int n, int s) {
  string endChars;
 
  vector<int> freq(s);
  for (int i = 0; i < s; i++) {
    string str;
    for (int it = 0; it < n; it++) {
      str += (i + 'a');
    }
    freq[i] = query(str);
  }
 
  for (int pos = n - 1; pos >= 0; pos--) {
    for (int i = 0; i < s; i++) {
      if (freq[i] > 0) {
        string build;
        for (int it = 0; it < freq[i]; it++) {
          build += (i + 'a');
        }
        bool work = true;
 
        if ((int) build.size() + 1 + (int) endChars.size() <= n) {
          for (int j = 0; j < s; j++) {
            string tmp;
            tmp += build;
            tmp += (j + 'a');
            tmp += endChars;
 
            if (query(tmp) == (int) tmp.length()) {
              work = false;
              break;
            }
          }
        }
 
        if (work) {
          freq[i] -= 1;
          string nEnd;
          nEnd += (i + 'a');
          nEnd += endChars;
          swap(nEnd, endChars);
          break;
        }
      }
    }
  }
  return endChars;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 208 KB Guessed the password with 427 queries.
2 Correct 15 ms 208 KB Guessed the password with 1209 queries.

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 208 KB Guessed the password with 135 queries.
2 Runtime error 3 ms 208 KB Execution killed with signal 13
3 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 402 ms 444 KB Execution killed with signal 13
2 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 208 KB Guessed the password with 427 queries.
2 Correct 15 ms 208 KB Guessed the password with 1209 queries.
3 Correct 2 ms 208 KB Guessed the password with 135 queries.
4 Runtime error 3 ms 208 KB Execution killed with signal 13
5 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 208 KB Guessed the password with 427 queries.
2 Correct 15 ms 208 KB Guessed the password with 1209 queries.
3 Correct 2 ms 208 KB Guessed the password with 135 queries.
4 Runtime error 3 ms 208 KB Execution killed with signal 13
5 Halted 0 ms 0 KB -