oj.uz

Submission #702381

# Submission time Handle Problem Language Result Execution time Memory
702381 2023-02-23T20:41:35 Z bebra Snake Escaping (JOI18_snake_escaping) C++17
22 / 100
 2000 ms 18260 KB 
#include <bits/stdc++.h>
using namespace std;

#define dbg(x) cerr << #x << ": " << x << endl;


constexpr int MAX_Q = 1e6 + 5;
constexpr int MAX_BIT = 20;
constexpr int MAX_N = 1 << 20;
constexpr int MAGIC = 12;

int ans[MAX_Q];
int dp[MAX_N];
int max_mask[MAX_N];


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

    int k, q;
    cin >> k >> q;

    string s;
    cin >> s;

    map<int, vector<pair<int, int>>> shifts;
    for (int j = 0; j < q; ++j) {
        string t;
        cin >> t;
        reverse(t.begin(), t.end());

        int mask = 0;
        int shift = 0;
        int bits_cnt = 0;
        for (int i = 0; i < k; ++i) {
            if (t[i] == '?') {
                mask |= 1 << i;
                ++bits_cnt;
            } else if (t[i] == '1') {
                shift |= 1 << i;
            }
        }

        if (bits_cnt <= MAGIC) {
            int res = s[shift] - '0';
            for (int submask = mask; submask > 0; submask = (submask - 1) & mask) {
                res += s[submask + shift] - '0';
            }
            ans[j] = res;
        } else {
            shifts[shift].emplace_back(mask, j);
            max_mask[shift] = max(max_mask[shift], __lg(mask) + 1);
        }
    }

    for (const auto& [shift, values] : shifts) {
        int n = 1 << max_mask[shift];

        for (int mask = 0; (mask | shift) < n; ++mask) {
            if ((mask & shift) == 0) {
                dp[mask] = s[mask | shift] - '0';
            }
        }

        for (int bit = 0; bit < k; ++bit) {
            if (shift & (1 << bit)) continue;

            for (int mask = 0; (mask | shift) < n; ++mask) {
                if ((mask & shift) != 0) continue;

                if (mask & (1 << bit)) {
                    dp[mask] += dp[mask ^ (1 << bit)];
                }
            }
        }

        for (const auto& [mask, idx] : values) {
            ans[idx] = dp[mask];
        }

        for (int mask = 0; (mask | shift) < n; ++mask) {
            dp[mask] = 0;
        }
    }

    for (int i = 0; i < q; ++i) {
        cout << ans[i] << '\n';
    }
    
    return 0;
}


/*
4
1
3141592653589793
?01?


*/

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 208 ms 8140 KB Output is correct
12 Correct 260 ms 7844 KB Output is correct
13 Correct 175 ms 7144 KB Output is correct
14 Correct 168 ms 7232 KB Output is correct
15 Correct 247 ms 8260 KB Output is correct
16 Correct 197 ms 7396 KB Output is correct
17 Correct 200 ms 7332 KB Output is correct
18 Correct 1207 ms 9264 KB Output is correct
19 Correct 157 ms 6208 KB Output is correct
20 Correct 252 ms 7896 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 208 ms 8140 KB Output is correct
12 Correct 260 ms 7844 KB Output is correct
13 Correct 175 ms 7144 KB Output is correct
14 Correct 168 ms 7232 KB Output is correct
15 Correct 247 ms 8260 KB Output is correct
16 Correct 197 ms 7396 KB Output is correct
17 Correct 200 ms 7332 KB Output is correct
18 Correct 1207 ms 9264 KB Output is correct
19 Correct 157 ms 6208 KB Output is correct
20 Correct 252 ms 7896 KB Output is correct
21 Correct 345 ms 8212 KB Output is correct
22 Correct 403 ms 8360 KB Output is correct
23 Correct 197 ms 7408 KB Output is correct
24 Correct 190 ms 7224 KB Output is correct
25 Correct 480 ms 9168 KB Output is correct
26 Correct 243 ms 7796 KB Output is correct
27 Correct 238 ms 7680 KB Output is correct
28 Correct 176 ms 18260 KB Output is correct
29 Correct 145 ms 6152 KB Output is correct
30 Correct 454 ms 8432 KB Output is correct
31 Correct 263 ms 8268 KB Output is correct
32 Correct 248 ms 8204 KB Output is correct
33 Correct 175 ms 7128 KB Output is correct
34 Correct 196 ms 7252 KB Output is correct
35 Correct 239 ms 7636 KB Output is correct
36 Correct 142 ms 6208 KB Output is correct
37 Correct 268 ms 8252 KB Output is correct
38 Correct 145 ms 6140 KB Output is correct
39 Correct 197 ms 7412 KB Output is correct
40 Correct 221 ms 7244 KB Output is correct

Subtask #4
0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 75 ms 2416 KB Output is correct
12 Correct 100 ms 6012 KB Output is correct
13 Correct 19 ms 2416 KB Output is correct
14 Correct 32 ms 2416 KB Output is correct
15 Execution timed out 2047 ms 10020 KB Time limit exceeded
16 Halted 0 ms 0 KB -

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 208 ms 8140 KB Output is correct
12 Correct 260 ms 7844 KB Output is correct
13 Correct 175 ms 7144 KB Output is correct
14 Correct 168 ms 7232 KB Output is correct
15 Correct 247 ms 8260 KB Output is correct
16 Correct 197 ms 7396 KB Output is correct
17 Correct 200 ms 7332 KB Output is correct
18 Correct 1207 ms 9264 KB Output is correct
19 Correct 157 ms 6208 KB Output is correct
20 Correct 252 ms 7896 KB Output is correct
21 Correct 345 ms 8212 KB Output is correct
22 Correct 403 ms 8360 KB Output is correct
23 Correct 197 ms 7408 KB Output is correct
24 Correct 190 ms 7224 KB Output is correct
25 Correct 480 ms 9168 KB Output is correct
26 Correct 243 ms 7796 KB Output is correct
27 Correct 238 ms 7680 KB Output is correct
28 Correct 176 ms 18260 KB Output is correct
29 Correct 145 ms 6152 KB Output is correct
30 Correct 454 ms 8432 KB Output is correct
31 Correct 263 ms 8268 KB Output is correct
32 Correct 248 ms 8204 KB Output is correct
33 Correct 175 ms 7128 KB Output is correct
34 Correct 196 ms 7252 KB Output is correct
35 Correct 239 ms 7636 KB Output is correct
36 Correct 142 ms 6208 KB Output is correct
37 Correct 268 ms 8252 KB Output is correct
38 Correct 145 ms 6140 KB Output is correct
39 Correct 197 ms 7412 KB Output is correct
40 Correct 221 ms 7244 KB Output is correct
41 Correct 75 ms 2416 KB Output is correct
42 Correct 100 ms 6012 KB Output is correct
43 Correct 19 ms 2416 KB Output is correct
44 Correct 32 ms 2416 KB Output is correct
45 Execution timed out 2047 ms 10020 KB Time limit exceeded
46 Halted 0 ms 0 KB -