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Submission #797343

# Submission time Handle Problem Language Result Execution time Memory
797343 2023-07-29T09:45:22 Z Johann L-triominoes (CEOI21_ltriominoes) C++14
10 / 100
 8000 ms 524288 KB 
#include "bits/stdc++.h"
using namespace std;

typedef long long ll;
typedef vector<bool> vb;
typedef vector<int> vi;
typedef pair<int, int> pii;
typedef vector<pii> vpii;
#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()

int W, H, K;
map<int, int> blocked;
vb dp[2];

void dfs(int idx, int base, int next, vb &nextdp)
{
    if (idx == W)
    {
        nextdp[next] = true;
        return;
    }
    if (base & (1 << idx))
        dfs(idx + 1, base, next, nextdp);
    else
    {
        // _X my pos: 1 << idx

        // TT
        // _T
        if (idx < W - 1 && ((3 << idx) & next) == 0)
            dfs(idx + 1, base | (1 << idx), next | (3 << idx), nextdp);

        // _TT
        // _T_
        if (idx > 0 && ((3 << (idx - 1)) & next) == 0)
            dfs(idx + 1, base | (1 << idx), next | (3 << (idx - 1)), nextdp);

        // T_
        // TT
        if (idx < W - 1 && (base & (3 << idx)) == 0 && (next & (2 << idx)) == 0)
            dfs(idx + 2, base | (3 << idx), next | (2 << idx), nextdp);

        // _T
        // TT
        if (idx < W - 1 && (base & (3 << idx)) == 0 && (next & (1 << idx)) == 0)
            dfs(idx + 2, base | (3 << idx), next | (1 << idx), nextdp);
    }
}

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

    cin >> W >> H >> K;
    for (int k = 0, x, y; k < K; ++k)
    {
        cin >> x >> y;
        --x, --y;
        blocked[y] = blocked[y] | (1 << x);
    }

    dp[0] = vb(1 << W, false);
    dp[0][0] = true;
    for (int i = 0; i < H; ++i)
    {
        int ii = i & 1;
        int ni = ii ^ 1;
        dp[ni] = vb(1 << W, false);

        for (int j = 0; j < sz(dp[ii]); ++j)
        {
            if (!dp[ii][j])
                continue;
            if (j & blocked[i])
                continue;

            dfs(0, j | blocked[i], 0, dp[ni]);
        }
    }

    if (dp[H & 1][0])
        cout << "YES\n";
    else
        cout << "NO\n";

    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 320 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 324 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 2 ms 280 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 59 ms 304 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 4 ms 212 KB Output is correct
11 Correct 119 ms 320 KB Output is correct
12 Correct 2 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 2 ms 212 KB Output is correct
16 Correct 1255 ms 464 KB Output is correct
17 Correct 100 ms 348 KB Output is correct
18 Correct 532 ms 324 KB Output is correct
19 Correct 5 ms 340 KB Output is correct
20 Correct 1332 ms 472 KB Output is correct
21 Correct 523 ms 352 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 5 ms 324 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 1470 ms 452 KB Output is correct
26 Correct 1505 ms 336 KB Output is correct
27 Correct 1 ms 340 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Execution timed out 8047 ms 34132 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Runtime error 6816 ms 524288 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 8048 ms 213720 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Execution timed out 8041 ms 31432 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 320 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 324 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 2 ms 280 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 59 ms 304 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 4 ms 212 KB Output is correct
11 Correct 119 ms 320 KB Output is correct
12 Correct 2 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 2 ms 212 KB Output is correct
16 Correct 1255 ms 464 KB Output is correct
17 Correct 100 ms 348 KB Output is correct
18 Correct 532 ms 324 KB Output is correct
19 Correct 5 ms 340 KB Output is correct
20 Correct 1332 ms 472 KB Output is correct
21 Correct 523 ms 352 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 5 ms 324 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 1470 ms 452 KB Output is correct
26 Correct 1505 ms 336 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Execution timed out 8047 ms 34132 KB Time limit exceeded
29 Halted 0 ms 0 KB -