oj.uz

Submission #496307

# Submission time Handle Problem Language Result Execution time Memory
496307 2021-12-21T05:24:04 Z triplem5ds Password (RMI18_password) C++14
30 / 100
 502 ms 536 KB 
/// Zengy MANGA
#pragma GCC optimize("O3")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("avx,avx2,fma")

#include "bits/stdc++.h"

using namespace std;

#define pb push_back
#define F first
#define S second
#define f(i, a, b)  for(int i = a; i < b; i++)
#define all(a)  a.begin(),a.end()
#define rall(a) a.rbegin(),a.rend()
#define sz(x) (int)(x).size()
#define mp(x,y) make_pair(x,y)
#define popCnt(x) (__builtin_popcountll(x))

using ll = long long;
using ii = pair<int,int>;
using ull = unsigned long long;
using db = long double;

const int N = 2e5+5, LG = 18, MOD = 998244353;
const long double PI = acos(-1);

int query(string s);

string guess(int n, int s) {
    string lft = "";
    string rt = "";
    while(rt.size() + lft.size() != n) {
        char cIndex = 'z' + 1;
//        cout << rt << ' ' << lft << endl;
        for(char c = 'a'; c < 'a' + s; c++) {
            if(query(rt+string(1,c) + lft) > lft.size() + rt.size()) {
                cIndex = c;
                break;
            }
        }
        if(cIndex == 'z' + 1) {
            rt.pb(lft[0]);
            lft.erase(lft.begin());
        }   else {
            lft = string(1, cIndex) + lft;
        }
    }
    return rt+lft;
}

Compilation message

password.cpp: In function 'std::string guess(int, int)':
password.cpp:33:34: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   33 |     while(rt.size() + lft.size() != n) {
      |           ~~~~~~~~~~~~~~~~~~~~~~~^~~~
password.cpp:37:44: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |             if(query(rt+string(1,c) + lft) > lft.size() + rt.size()) {
      |                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 200 KB Guessed the password with 315 queries.
2 Correct 7 ms 200 KB Guessed the password with 736 queries.

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 200 KB Guessed the password with 166 queries.
2 Correct 5 ms 200 KB Guessed the password with 306 queries.
3 Correct 7 ms 200 KB Guessed the password with 512 queries.
4 Correct 8 ms 284 KB Guessed the password with 668 queries.

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 211 ms 312 KB Guessed the password with 20159 queries.
2 Correct 218 ms 536 KB Guessed the password with 29497 queries.
3 Correct 502 ms 432 KB Guessed the password with 44816 queries.
4 Incorrect 461 ms 436 KB Could not guess the password with 50000 queries.

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 200 KB Guessed the password with 315 queries.
2 Correct 7 ms 200 KB Guessed the password with 736 queries.
3 Correct 2 ms 200 KB Guessed the password with 166 queries.
4 Correct 5 ms 200 KB Guessed the password with 306 queries.
5 Correct 7 ms 200 KB Guessed the password with 512 queries.
6 Correct 8 ms 284 KB Guessed the password with 668 queries.
7 Correct 211 ms 312 KB Guessed the password with 20159 queries.
8 Correct 218 ms 536 KB Guessed the password with 29497 queries.
9 Correct 502 ms 432 KB Guessed the password with 44816 queries.
10 Incorrect 461 ms 436 KB Could not guess the password with 50000 queries.

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 200 KB Guessed the password with 315 queries.
2 Correct 7 ms 200 KB Guessed the password with 736 queries.
3 Correct 2 ms 200 KB Guessed the password with 166 queries.
4 Correct 5 ms 200 KB Guessed the password with 306 queries.
5 Correct 7 ms 200 KB Guessed the password with 512 queries.
6 Correct 8 ms 284 KB Guessed the password with 668 queries.
7 Correct 211 ms 312 KB Guessed the password with 20159 queries.
8 Correct 218 ms 536 KB Guessed the password with 29497 queries.
9 Correct 502 ms 432 KB Guessed the password with 44816 queries.
10 Incorrect 461 ms 436 KB Could not guess the password with 50000 queries.