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Submission #642649

# Submission time Handle Problem Language Result Execution time Memory
642649 2022-09-20T10:05:16 Z SlavicG Password (RMI18_password) C++17
40 / 100
 426 ms 428 KB 
#include "bits/stdc++.h"
using namespace std;
int query(string str);

#define sz(a) (int)a.size()

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
string guess(int n, int s) {
    vector<pair<int, char>> v;
    for(int f = 0; f < s; ++f) {
        char c = char('a' + f);
        string paiu = string(n, c);
        int x = query(paiu);
        if(x > 0) {
            v.push_back({x, c});
        }
    }
    assert(v.size() > 0);
    sort(v.rbegin(), v.rend());
    string ans = string(v[0].first, v[0].second);
    v.erase(v.begin());

    assert(sz(ans) > 0);
    if(!sz(v)) return ans;
    for(auto noo: v) {
        char c = noo.second;
        int cnt = noo.first;
        vector<int> add(sz(ans) + 5, 0);
        string ff = ans;
        string bruh = "";
        for(int i = 0; i <= sz(ff); ++i) {
            int lol = 0;
            for(int j = 0; j < cnt; ++j) {
                bruh += c;
                string paiu = bruh;
                for(int k = i; k < sz(ff); ++k) paiu += ff[k];
                if(query(paiu) == sz(paiu)) {
                    ++lol;
                } else {
                    bruh.pop_back();
                    break;
                }
            }
            cnt -= lol;
            if(i < sz(ff)) bruh += ff[i];
        }
        ans = bruh;
    }
    return ans;
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 236 KB Guessed the password with 87 queries.
2 Runtime error 2 ms 300 KB Execution killed with signal 13
3 Halted 0 ms 0 KB -

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Guessed the password with 52 queries.
2 Correct 2 ms 256 KB Guessed the password with 128 queries.
3 Correct 3 ms 244 KB Guessed the password with 181 queries.
4 Correct 3 ms 208 KB Guessed the password with 264 queries.

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 113 ms 348 KB Guessed the password with 8257 queries.
2 Correct 103 ms 348 KB Guessed the password with 10639 queries.
3 Correct 307 ms 428 KB Guessed the password with 19403 queries.
4 Correct 426 ms 364 KB Guessed the password with 26461 queries.

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 236 KB Guessed the password with 87 queries.
2 Runtime error 2 ms 300 KB Execution killed with signal 13
3 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 236 KB Guessed the password with 87 queries.
2 Runtime error 2 ms 300 KB Execution killed with signal 13
3 Halted 0 ms 0 KB -