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Submission #357558

# Submission time Handle Problem Language Result Execution time Memory
357558 2021-01-24T06:03:03 Z blue PIN (CEOI10_pin) C++17
30 / 100
 39 ms 10732 KB 
#include <iostream>
#include <vector>
using namespace std;

/*
There are 36^4 = 1679616 possibilities for the PIN.

Let them be numbered from 0 to 1679615.
Two PINS have one difference if their
*/

int adj(char c)
{
    if(c == '0') return 1;
    else if('1' <= c && c <= '9') return (c - '1') + 2;
    else return (c - 'a') + 11;
}

int ct[37][37][37][37];

int main()
{
    int N, D;
    cin >> N >> D;

    string S;
    vector< vector<int> > T(N, vector<int>(4));
    for(int i = 0; i < N; i++)
    {
        cin >> S;
        for(int j = 0; j < 4; j++) T[i][j] = adj(S[j]);
        for(int mask = 0; mask < (1 << 4); mask++)
        {
            ct[(mask & (1 << 0)) ? T[i][0] : 0]
              [(mask & (1 << 1)) ? T[i][1] : 0]
              [(mask & (1 << 2)) ? T[i][2] : 0]
              [(mask & (1 << 3)) ? T[i][3] : 0]++;
        }
    }

    long long res = 0;

    vector<int> X;

    if(D == 1)
    {
        for(int i = 0; i < N; i++)
        {
            X = T[i];
            res += ct[0][X[1]][X[2]][X[3]];
            res += ct[X[0]][0][X[2]][X[3]];
            res += ct[X[0]][X[1]][0][X[3]];
            res += ct[X[0]][X[1]][X[2]][0];
            res -= 4 * ct[X[0]][X[1]][X[2]][X[3]];
        }

        res /= 2;
        cout << res << '\n';
    }
}

Subtask #1
30.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2028 KB Output is correct
2 Incorrect 3 ms 2028 KB Output isn't correct
3 Incorrect 2 ms 1900 KB Output isn't correct
4 Correct 10 ms 3052 KB Output is correct
5 Correct 12 ms 3308 KB Output is correct
6 Incorrect 12 ms 3308 KB Output isn't correct
7 Incorrect 9 ms 3052 KB Output isn't correct
8 Correct 13 ms 3584 KB Output is correct
9 Correct 21 ms 4588 KB Output is correct
10 Incorrect 23 ms 4844 KB Output isn't correct
11 Incorrect 12 ms 3436 KB Output isn't correct
12 Incorrect 21 ms 4716 KB Output isn't correct
13 Incorrect 13 ms 3692 KB Output isn't correct
14 Incorrect 13 ms 3436 KB Output isn't correct
15 Incorrect 21 ms 4736 KB Output isn't correct
16 Correct 29 ms 9580 KB Output is correct
17 Incorrect 35 ms 10604 KB Output isn't correct
18 Incorrect 24 ms 9964 KB Output isn't correct
19 Incorrect 26 ms 10348 KB Output isn't correct
20 Incorrect 39 ms 10732 KB Output isn't correct