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Submission #873985

# Submission time Handle Problem Language Result Execution time Memory
873985 2023-11-16T06:25:16 Z vjudge1 Lamps (JOI19_lamps) C++17
6 / 100
 951 ms 6828 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef array<int, 2> pii;

#define pb push_back
#define sz(a) (int) (a).size()
#define all(a) (a).begin(), (a).end()

const int N = 18;

int n, d[1 << N];
bool vis[1 << N];
string a, b;

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

    cin >> n >> a >> b;
    int ia = 0, ib = 0;

    for (int i = 0; i < n; ++i) {
        if (a[i] == '1')
            ia += (1 << i);
        if (b[i] == '1')
            ib += (1 << i);
    }

    queue<int> q;
    q.push(ia);
    vis[ia] = 1;

    while (!q.empty()) {
        int v = q.front();
        q.pop();

        if (v == ib) {
            cout << d[v];
            return 0;
        }

        for (int l = 0; l < n; ++l) {
            for (int r = l; r < n; ++r) {
                int u = v;
                for (int i = l; i <= r; ++i)
                    u |= (1 << i);
                if (!vis[u]) {
                    q.push(u);
                    vis[u] = 1;
                    d[u] = d[v] + 1;
                }

                u = v;
                for (int i = l; i <= r; ++i)
                    if (u & (1 << i))
                        u ^= (1 << i);
                if (!vis[u]) {
                    q.push(u);
                    vis[u] = 1;
                    d[u] = d[v] + 1;
                }

                u = v;
                for (int i = l; i <= r; ++i)
                    u ^= (1 << i);
                if (!vis[u]) {
                    q.push(u);
                    vis[u] = 1;
                    d[u] = d[v] + 1;
                }
            }
        }
    }

    return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 460 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 951 ms 2372 KB Output is correct
9 Correct 948 ms 2136 KB Output is correct
10 Correct 435 ms 1296 KB Output is correct
11 Correct 408 ms 1304 KB Output is correct
12 Correct 57 ms 2384 KB Output is correct
13 Correct 331 ms 1360 KB Output is correct
14 Correct 116 ms 2120 KB Output is correct
15 Correct 301 ms 1568 KB Output is correct
16 Correct 415 ms 2244 KB Output is correct
17 Correct 184 ms 1372 KB Output is correct
18 Correct 188 ms 2128 KB Output is correct
19 Correct 57 ms 1116 KB Output is correct
20 Correct 722 ms 2248 KB Output is correct
21 Correct 19 ms 1116 KB Output is correct
22 Correct 225 ms 2240 KB Output is correct
23 Correct 339 ms 1112 KB Output is correct
24 Correct 19 ms 1884 KB Output is correct
25 Correct 5 ms 1116 KB Output is correct
26 Correct 616 ms 2264 KB Output is correct
27 Correct 256 ms 1220 KB Output is correct
28 Correct 63 ms 896 KB Output is correct
29 Correct 753 ms 2124 KB Output is correct
30 Correct 221 ms 1368 KB Output is correct
31 Correct 2 ms 856 KB Output is correct
32 Correct 85 ms 2032 KB Output is correct
33 Correct 237 ms 1116 KB Output is correct
34 Correct 92 ms 1112 KB Output is correct

Subtask #2
0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 460 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 951 ms 2372 KB Output is correct
9 Correct 948 ms 2136 KB Output is correct
10 Correct 435 ms 1296 KB Output is correct
11 Correct 408 ms 1304 KB Output is correct
12 Correct 57 ms 2384 KB Output is correct
13 Correct 331 ms 1360 KB Output is correct
14 Correct 116 ms 2120 KB Output is correct
15 Correct 301 ms 1568 KB Output is correct
16 Correct 415 ms 2244 KB Output is correct
17 Correct 184 ms 1372 KB Output is correct
18 Correct 188 ms 2128 KB Output is correct
19 Correct 57 ms 1116 KB Output is correct
20 Correct 722 ms 2248 KB Output is correct
21 Correct 19 ms 1116 KB Output is correct
22 Correct 225 ms 2240 KB Output is correct
23 Correct 339 ms 1112 KB Output is correct
24 Correct 19 ms 1884 KB Output is correct
25 Correct 5 ms 1116 KB Output is correct
26 Correct 616 ms 2264 KB Output is correct
27 Correct 256 ms 1220 KB Output is correct
28 Correct 63 ms 896 KB Output is correct
29 Correct 753 ms 2124 KB Output is correct
30 Correct 221 ms 1368 KB Output is correct
31 Correct 2 ms 856 KB Output is correct
32 Correct 85 ms 2032 KB Output is correct
33 Correct 237 ms 1116 KB Output is correct
34 Correct 92 ms 1112 KB Output is correct
35 Runtime error 1 ms 604 KB Execution killed with signal 11
36 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 5 ms 4496 KB Output is correct
8 Runtime error 7 ms 6828 KB Execution killed with signal 11
9 Halted 0 ms 0 KB -

Subtask #4
0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 460 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 951 ms 2372 KB Output is correct
9 Correct 948 ms 2136 KB Output is correct
10 Correct 435 ms 1296 KB Output is correct
11 Correct 408 ms 1304 KB Output is correct
12 Correct 57 ms 2384 KB Output is correct
13 Correct 331 ms 1360 KB Output is correct
14 Correct 116 ms 2120 KB Output is correct
15 Correct 301 ms 1568 KB Output is correct
16 Correct 415 ms 2244 KB Output is correct
17 Correct 184 ms 1372 KB Output is correct
18 Correct 188 ms 2128 KB Output is correct
19 Correct 57 ms 1116 KB Output is correct
20 Correct 722 ms 2248 KB Output is correct
21 Correct 19 ms 1116 KB Output is correct
22 Correct 225 ms 2240 KB Output is correct
23 Correct 339 ms 1112 KB Output is correct
24 Correct 19 ms 1884 KB Output is correct
25 Correct 5 ms 1116 KB Output is correct
26 Correct 616 ms 2264 KB Output is correct
27 Correct 256 ms 1220 KB Output is correct
28 Correct 63 ms 896 KB Output is correct
29 Correct 753 ms 2124 KB Output is correct
30 Correct 221 ms 1368 KB Output is correct
31 Correct 2 ms 856 KB Output is correct
32 Correct 85 ms 2032 KB Output is correct
33 Correct 237 ms 1116 KB Output is correct
34 Correct 92 ms 1112 KB Output is correct
35 Runtime error 1 ms 604 KB Execution killed with signal 11
36 Halted 0 ms 0 KB -