oj.uz

Submission #212166

# Submission time Handle Problem Language Result Execution time Memory
212166 2020-03-22T11:49:02 Z KarolloraK Building 4 (JOI20_building4) C++17
11 / 100
 27 ms 16256 KB 
#include <algorithm>
#include <iostream>
#include <string>

using namespace std;

int _1[4 * 1000 + 5], _2[4 * 1000 + 5];
bool dyn[4 * 1000 + 5][2][2 * 1000 + 5];

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    string wyn;
    int n;

    cin >> n;

    for(int i = 1; i < (n << 1) + 1; ++i)
    {
        cin >> _1[i];
    }
    for(int i = 1; i < (n << 1) + 1; ++i)
    {
        cin >> _2[i];
    }

    dyn[1][0][1] = 1;
    dyn[1][1][0] = 1;
    for(int i = 2; i < (n << 1) + 1; ++i)
    {
        for(int j = 0; j < min(i, n) + 1; ++j)
        {
            dyn[i][0][j] = dyn[i - 1][0][j - 1] * (_1[i - 1] <= _1[i]) + dyn[i - 1][1][j - 1] * (_2[i - 1] <= _1[i]);
            dyn[i][1][j] = dyn[i - 1][0][j] * (_1[i - 1] <= _2[i]) + dyn[i - 1][1][j] * (_2[i - 1] <= _2[i]);
        }
    }

    if(dyn[(n << 1)][0][n] + dyn[(n << 1)][1][n] == 0)
    {
        cout << "-1\n";
        return 0;
    }
    for(int i = (n << 1), ile = n; i > 0; --i)
    {
        if(dyn[i][0][ile] == 1 && (wyn.empty() || _1[i] <= (wyn.back() == 'B') * _2[i + 1] + (wyn.back() == 'A') * _1[i + 1]))
        {
            wyn += "A";
            ile--;
        }
        else if(dyn[i][1][ile] == 1)
        {
            wyn += "B";
        }
    }
    reverse(wyn.begin(), wyn.end());
    cout << wyn << "\n";

    return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 22 ms 14976 KB Output is correct
6 Correct 22 ms 14592 KB Output is correct
7 Correct 18 ms 12928 KB Output is correct
8 Correct 22 ms 13952 KB Output is correct
9 Correct 22 ms 14336 KB Output is correct
10 Correct 18 ms 12800 KB Output is correct
11 Correct 22 ms 15232 KB Output is correct
12 Correct 25 ms 16128 KB Output is correct
13 Correct 23 ms 16128 KB Output is correct
14 Correct 24 ms 16256 KB Output is correct
15 Correct 24 ms 16128 KB Output is correct
16 Correct 27 ms 16248 KB Output is correct
17 Correct 24 ms 16120 KB Output is correct
18 Correct 26 ms 16128 KB Output is correct
19 Correct 24 ms 16128 KB Output is correct
20 Correct 23 ms 16128 KB Output is correct
21 Correct 24 ms 16128 KB Output is correct
22 Correct 24 ms 16128 KB Output is correct
23 Correct 27 ms 16120 KB Output is correct
24 Correct 25 ms 16120 KB Output is correct
25 Correct 23 ms 16000 KB Output is correct
26 Correct 23 ms 16128 KB Output is correct
27 Correct 23 ms 16128 KB Output is correct
28 Correct 21 ms 14464 KB Output is correct
29 Correct 25 ms 16128 KB Output is correct
30 Correct 23 ms 14584 KB Output is correct
31 Correct 27 ms 16120 KB Output is correct
32 Correct 19 ms 13568 KB Output is correct
33 Correct 23 ms 16128 KB Output is correct

Subtask #2
0 / 89.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 22 ms 14976 KB Output is correct
6 Correct 22 ms 14592 KB Output is correct
7 Correct 18 ms 12928 KB Output is correct
8 Correct 22 ms 13952 KB Output is correct
9 Correct 22 ms 14336 KB Output is correct
10 Correct 18 ms 12800 KB Output is correct
11 Correct 22 ms 15232 KB Output is correct
12 Correct 25 ms 16128 KB Output is correct
13 Correct 23 ms 16128 KB Output is correct
14 Correct 24 ms 16256 KB Output is correct
15 Correct 24 ms 16128 KB Output is correct
16 Correct 27 ms 16248 KB Output is correct
17 Correct 24 ms 16120 KB Output is correct
18 Correct 26 ms 16128 KB Output is correct
19 Correct 24 ms 16128 KB Output is correct
20 Correct 23 ms 16128 KB Output is correct
21 Correct 24 ms 16128 KB Output is correct
22 Correct 24 ms 16128 KB Output is correct
23 Correct 27 ms 16120 KB Output is correct
24 Correct 25 ms 16120 KB Output is correct
25 Correct 23 ms 16000 KB Output is correct
26 Correct 23 ms 16128 KB Output is correct
27 Correct 23 ms 16128 KB Output is correct
28 Correct 21 ms 14464 KB Output is correct
29 Correct 25 ms 16128 KB Output is correct
30 Correct 23 ms 14584 KB Output is correct
31 Correct 27 ms 16120 KB Output is correct
32 Correct 19 ms 13568 KB Output is correct
33 Correct 23 ms 16128 KB Output is correct
34 Runtime error 6 ms 640 KB Execution killed with signal 11 (could be triggered by violating memory limits)
35 Halted 0 ms 0 KB -