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Submission #960968

# Submission time Handle Problem Language Result Execution time Memory
960968 2024-04-11T10:11:07 Z LucaIlie L-triominoes (CEOI21_ltriominoes) C++17
10 / 100
 8000 ms 288960 KB 
#include <bits/stdc++.h>

using namespace std;

const int MAX_W = 13;
const int MAX_N = (1 << MAX_W);
map<int, int> conf;
bitset<MAX_N> adj[MAX_N];

bool hasBit( int mask, int i ) {
    return ((mask >> i) & 1);
}

int main() {
    int w, h, k;

    cin >> w >> h >> k;
    conf[0] = conf[h - 1] = 0;
    for ( int i = 0; i < k; i++ ) {
        int l, c;
        cin >> l >> c;
        l--;
        c--;
        conf[c] += (1 << l);
    }

    int n = (1 << w);
    for ( int mask = 0; mask < n; mask++ ) {
        vector<int> prvVec1 = { 0 }, prvVec2 = { 0 };
        for ( int i = 0; i < w; i++ ) {
            vector<int> vec;

            if ( hasBit( mask, i ) ) {
                for ( int m: prvVec1 )
                    vec.push_back( m );
            } else {
                for ( int m: prvVec1 ) {
                    if ( i >= 1 && !hasBit( m, i - 1 ) && !hasBit( m, i ) )
                        vec.push_back( m + (1 << (i - 1)) + (1 << i) );
                    if ( i <= w - 2 && !hasBit( m, i ) && !hasBit( m, i + 1 ) )
                        vec.push_back( m + (1 << i) + (1 << (i + 1)) );
                }

                if ( i >= 1 && !hasBit( mask, i - 1 ) ) {
                    for ( int m: prvVec2 ) {
                        if ( !hasBit( m, i - 1 ) )
                            vec.push_back( m + (1 << (i - 1)) );
                        if ( !hasBit( m, i ) )
                            vec.push_back( m + (1 << i) );
                    }
                }
            }

            prvVec2 = prvVec1;
            prvVec1 = vec;
        }


        for ( int m: prvVec1 )
            adj[mask][m] = 1;
    }

    bitset<MAX_N> pos;
    pos[conf[0]] = true;
    for ( int j = 1; j < h; j++ ) {
        bitset<MAX_N> newPos;
        for ( int m = 0; m < n; m++ ) {
            if ( pos[m] )
                newPos |= adj[m];
        }

        pos.reset();
        for ( int m = 0; m < n; m++ ) {
            if ( (conf[j] & m) == 0 )
                pos[conf[j] | m] = newPos[m];
        }
    }

    cout << (pos[n - 1] ? "YES\n" : "NO\n");

    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 2 ms 348 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 2 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 23 ms 4760 KB Output is correct
9 Correct 6 ms 2648 KB Output is correct
10 Correct 3 ms 2648 KB Output is correct
11 Correct 41 ms 4700 KB Output is correct
12 Correct 6 ms 2652 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 9 ms 4700 KB Output is correct
16 Correct 378 ms 8688 KB Output is correct
17 Correct 51 ms 2700 KB Output is correct
18 Correct 189 ms 4760 KB Output is correct
19 Correct 6 ms 604 KB Output is correct
20 Correct 430 ms 8712 KB Output is correct
21 Correct 200 ms 4748 KB Output is correct
22 Correct 2 ms 444 KB Output is correct
23 Correct 6 ms 380 KB Output is correct
24 Correct 2 ms 344 KB Output is correct
25 Correct 475 ms 8704 KB Output is correct
26 Correct 465 ms 8696 KB Output is correct
27 Correct 3 ms 348 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Execution timed out 8045 ms 16140 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Execution timed out 8036 ms 288960 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 8050 ms 96796 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 8029 ms 16312 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 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 2 ms 348 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 2 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 23 ms 4760 KB Output is correct
9 Correct 6 ms 2648 KB Output is correct
10 Correct 3 ms 2648 KB Output is correct
11 Correct 41 ms 4700 KB Output is correct
12 Correct 6 ms 2652 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 9 ms 4700 KB Output is correct
16 Correct 378 ms 8688 KB Output is correct
17 Correct 51 ms 2700 KB Output is correct
18 Correct 189 ms 4760 KB Output is correct
19 Correct 6 ms 604 KB Output is correct
20 Correct 430 ms 8712 KB Output is correct
21 Correct 200 ms 4748 KB Output is correct
22 Correct 2 ms 444 KB Output is correct
23 Correct 6 ms 380 KB Output is correct
24 Correct 2 ms 344 KB Output is correct
25 Correct 475 ms 8704 KB Output is correct
26 Correct 465 ms 8696 KB Output is correct
27 Correct 3 ms 348 KB Output is correct
28 Execution timed out 8045 ms 16140 KB Time limit exceeded
29 Halted 0 ms 0 KB -