oj.uz

Submission #1110975

# Submission time Handle Problem Language Result Execution time Memory
1110975 2024-11-11T08:19:12 Z crafticat Amusement Park (CEOI19_amusementpark) C++17
19 / 100
 3000 ms 592 KB 
#include <bits/stdc++.h>

using namespace std;

template<typename T>
using V = vector<T>;
using vi = V<int>;
using vb = V<bool>;
using pi = pair<int,int>;

#define F0R(i,n) for (int i = 0; i < n;i++)
#define FOR(i, j, n) for(int i = j; i < n;i++)
#define ckmin(x,y) x = min(x,y)
#define f first
#define s second
using ll = long long;
constexpr int MOD = 998244353;

V<int> vis;
V<V<int>> g;

bool dfs(int x) {
    if (vis[x] == 1) return false;
    vis[x] = 1;
    for (auto y : g[x]) {
        if (vis[y] == 2) continue;
        if (!dfs(y)) return false;
    }

    vis[x] = 2;
    return true;
}

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

    int n, m; cin >> n >> m;
    V<pi> edges(m);

    F0R(i, m) {
        int x, y; cin >> x >> y;
        edges[i] = {x,y};
    }

    ll ans = 0;
    for (int i = 1; i < (1 << m); ++i) {
        bitset<32> mask = i;
        int cost = 0;
        g.clear();
        vis.clear();
        vis.resize(n + 1);
        g.resize(n + 1);

        F0R(j, m) {
            auto [a, b] = edges[j];
            if (mask[j]) {
                cost++;
                swap(a,b);
            }
            g[a].push_back(b);
        }

        bool pos = true;
        FOR(k, 1, n + 1) {
            if (vis[k] == 2) continue;
            if (!dfs(k)) pos = false;
        }
        if (pos) ans += cost;
        ans %= MOD;
    }

    cout << ans;

    return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 592 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 508 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 2 ms 336 KB Output is correct
24 Correct 14 ms 336 KB Output is correct

Subtask #3
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 592 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 508 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 2 ms 336 KB Output is correct
24 Correct 14 ms 336 KB Output is correct
25 Correct 1 ms 504 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 2 ms 336 KB Output is correct
29 Correct 15 ms 336 KB Output is correct
30 Correct 132 ms 336 KB Output is correct
31 Correct 1174 ms 444 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 1 ms 336 KB Output is correct
34 Correct 3 ms 336 KB Output is correct
35 Correct 31 ms 336 KB Output is correct
36 Correct 579 ms 504 KB Output is correct
37 Execution timed out 3062 ms 336 KB Time limit exceeded
38 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 592 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 508 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 2 ms 336 KB Output is correct
24 Correct 14 ms 336 KB Output is correct
25 Correct 1 ms 504 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 2 ms 336 KB Output is correct
29 Correct 15 ms 336 KB Output is correct
30 Correct 132 ms 336 KB Output is correct
31 Correct 1174 ms 444 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 1 ms 336 KB Output is correct
34 Correct 3 ms 336 KB Output is correct
35 Correct 31 ms 336 KB Output is correct
36 Correct 579 ms 504 KB Output is correct
37 Execution timed out 3062 ms 336 KB Time limit exceeded
38 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 592 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 508 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 2 ms 336 KB Output is correct
24 Correct 14 ms 336 KB Output is correct
25 Correct 1 ms 504 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 2 ms 336 KB Output is correct
29 Correct 15 ms 336 KB Output is correct
30 Correct 132 ms 336 KB Output is correct
31 Correct 1174 ms 444 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 1 ms 336 KB Output is correct
34 Correct 3 ms 336 KB Output is correct
35 Correct 31 ms 336 KB Output is correct
36 Correct 579 ms 504 KB Output is correct
37 Execution timed out 3062 ms 336 KB Time limit exceeded
38 Halted 0 ms 0 KB -