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Submission #852997

# Submission time Handle Problem Language Result Execution time Memory
852997 2023-09-23T10:05:48 Z allin27x Password (RMI18_password) C++17
40 / 100
 173 ms 1732 KB 
#include <bits/stdc++.h>
using namespace std;

int query(string str);

string guess(int n, int s){
    string res;
    vector<int> nc(s, 0);
    for (int i=0; i<s; i++) nc[i] = query(string(n,'a'+i));
    while (res.size()<n){
        string rev = res; reverse(rev.begin(), rev.end());
        int mx = -1; for (int i=0; i<s; i++) if (nc[i]) {mx = i; break;}
        for (int i=mx+1; i<s; i++){
            if (!nc[i]) continue;
            if (query(string(nc[i], 'a'+i) + string(1,'a'+mx) + rev) != nc[i] + 1 + res.size()) mx = i;
        }
        nc[mx] --; res += 'a' + mx;
    }
    reverse(res.begin(), res.end());
    return res;
}

//aabcba

Compilation message

password.cpp: In function 'std::string guess(int, int)':
password.cpp:10:22: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   10 |     while (res.size()<n){
      |            ~~~~~~~~~~^~
password.cpp:15:70: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |             if (query(string(nc[i], 'a'+i) + string(1,'a'+mx) + rev) != nc[i] + 1 + res.size()) mx = i;
      |                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 436 KB Execution killed with signal 13
2 Halted 0 ms 0 KB -

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Guessed the password with 47 queries.
2 Correct 1 ms 344 KB Guessed the password with 137 queries.
3 Correct 0 ms 344 KB Guessed the password with 17 queries.
4 Correct 1 ms 344 KB Guessed the password with 294 queries.

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 52 ms 1236 KB Guessed the password with 9308 queries.
2 Correct 80 ms 720 KB Guessed the password with 17734 queries.
3 Correct 112 ms 716 KB Guessed the password with 20688 queries.
4 Correct 173 ms 1732 KB Guessed the password with 37111 queries.

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 436 KB Execution killed with signal 13
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 436 KB Execution killed with signal 13
2 Halted 0 ms 0 KB -