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Submission #491624

# Submission time Handle Problem Language Result Execution time Memory
491624 2021-12-03T14:47:29 Z blue Set (COCI21_set) C++17
40 / 110
 58 ms 460 KB 
#include <iostream>
#include <vector>
using namespace std;

int n, k;
int pow3[10];

int inv(int a, int b)
{
    int c = 0;
    for(int j = 0; j < k; j++)
    {
        c += pow3[j] * ((9 - (a % 3) - (b % 3)) % 3);

        a /= 3;
        b /= 3;
    }

    return c;
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    cin >> n >> k;

    pow3[0] = 1;
    for(int e = 1; e < 10; e++)
        pow3[e] = 3 * pow3[e-1];

    int num[n];
    for(int i = 0; i < n; i++)
    {
        num[i] = 0;

        string s;
        cin >> s;

        for(int j = 0; j < k; j++)
        {
            num[i] += pow3[j] * (s[j] - '1');
        }

        // cerr << i << ' ' << num[i] << '\n';
    }

    vector<int> exists(2500, 0);

    int ans = 0;

    for(int i = 0; i < n; i++)
    {
        for(int j = i+1; j < n; j++)
        {
            ans += exists[inv(num[i], num[j])];
        }

        exists[ num[i] ] = 1;
    }

    cout << ans << '\n';
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 312 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 312 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 58 ms 332 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 48 ms 332 KB Output is correct
24 Correct 11 ms 324 KB Output is correct
25 Correct 47 ms 332 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 40 ms 332 KB Output is correct
28 Correct 0 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct

Subtask #3
0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 312 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 58 ms 332 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 48 ms 332 KB Output is correct
24 Correct 11 ms 324 KB Output is correct
25 Correct 47 ms 332 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 40 ms 332 KB Output is correct
28 Correct 0 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Runtime error 1 ms 460 KB Execution killed with signal 11
33 Halted 0 ms 0 KB -