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Submission #869843

# Submission time Handle Problem Language Result Execution time Memory
869843 2023-11-05T22:30:49 Z DylanSmith Fireworks (APIO16_fireworks) C++17
100 / 100
 143 ms 41012 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

#define pb push_back
#define sz(x) (int)x.size()
#define all(x) begin(x),end(x)
#define lb(x,y) lower_bound(all(x),y)-begin(x)

mt19937 rng;

void solve() {
    int N, M; cin >> N >> M;
    vector<vector<int>> adj(N);
    vector<int> len(N + M, 0);
    for (int i = 1; i < N + M; i++) {
        int u; cin >> u; u--;
        adj[u].pb(i);
        cin >> len[i];
    }
    if (M == 0) {
        cout << 0 << "\n";
        return;
    }
    vector<priority_queue<ll>> x(N + M);
    vector<ll> a(N + M, 0), b(N + M, 0);
    for (int u = N + M - 1; u >= 0; u--) {
        if (u >= N) {
            x[u].push(len[u]);
            x[u].push(len[u]);
            a[u] = 1;
            b[u] = -len[u];
        } else {
            for (int v : adj[u]) {
                if (sz(x[v]) > sz(x[u])) {
                    swap(x[u], x[v]);
                    swap(a[u], a[v]);
                    swap(b[u], b[v]);
                }
            }
            for (int v : adj[u]) {
                if (x[v].empty()) continue;
                while (!x[v].empty()) {
                    x[u].push(x[v].top());
                    x[v].pop();
                }
                a[u] += a[v];
                b[u] += b[v];
            }
            while (a[u] > 1) {
                a[u]--;
                b[u] += x[u].top(); x[u].pop();
            }
            ll n2 = x[u].top(); x[u].pop();
            ll n1 = x[u].top(); x[u].pop();
            n1 += len[u];
            n2 += len[u];
            x[u].push(n1);
            x[u].push(n2);
            b[u] -= len[u];
        }
    }
    cout << (x[0].top() + b[0]) << "\n";
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    rng = mt19937(chrono::steady_clock::now().time_since_epoch().count());

    solve();

    return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 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 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #2
19.0 / 19.0

# 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 348 KB Output is correct
5 Correct 1 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 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 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 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 408 KB Output is correct
33 Correct 1 ms 604 KB Output is correct
34 Correct 1 ms 604 KB Output is correct
35 Correct 1 ms 860 KB Output is correct
36 Correct 2 ms 860 KB Output is correct
37 Correct 2 ms 860 KB Output is correct
38 Correct 3 ms 856 KB Output is correct
39 Correct 2 ms 860 KB Output is correct
40 Correct 1 ms 860 KB Output is correct
41 Correct 1 ms 860 KB Output is correct
42 Correct 1 ms 860 KB Output is correct
43 Correct 2 ms 860 KB Output is correct
44 Correct 2 ms 980 KB Output is correct
45 Correct 2 ms 860 KB Output is correct
46 Correct 2 ms 1116 KB Output is correct
47 Correct 2 ms 1092 KB Output is correct
48 Correct 2 ms 980 KB Output is correct
49 Correct 2 ms 860 KB Output is correct
50 Correct 2 ms 860 KB Output is correct
51 Correct 2 ms 860 KB Output is correct
52 Correct 2 ms 860 KB Output is correct
53 Correct 2 ms 860 KB Output is correct
54 Correct 2 ms 1116 KB Output is correct

Subtask #4
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 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 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 408 KB Output is correct
33 Correct 1 ms 604 KB Output is correct
34 Correct 1 ms 604 KB Output is correct
35 Correct 1 ms 860 KB Output is correct
36 Correct 2 ms 860 KB Output is correct
37 Correct 2 ms 860 KB Output is correct
38 Correct 3 ms 856 KB Output is correct
39 Correct 2 ms 860 KB Output is correct
40 Correct 1 ms 860 KB Output is correct
41 Correct 1 ms 860 KB Output is correct
42 Correct 1 ms 860 KB Output is correct
43 Correct 2 ms 860 KB Output is correct
44 Correct 2 ms 980 KB Output is correct
45 Correct 2 ms 860 KB Output is correct
46 Correct 2 ms 1116 KB Output is correct
47 Correct 2 ms 1092 KB Output is correct
48 Correct 2 ms 980 KB Output is correct
49 Correct 2 ms 860 KB Output is correct
50 Correct 2 ms 860 KB Output is correct
51 Correct 2 ms 860 KB Output is correct
52 Correct 2 ms 860 KB Output is correct
53 Correct 2 ms 860 KB Output is correct
54 Correct 2 ms 1116 KB Output is correct
55 Correct 5 ms 1884 KB Output is correct
56 Correct 18 ms 6344 KB Output is correct
57 Correct 30 ms 10504 KB Output is correct
58 Correct 40 ms 13260 KB Output is correct
59 Correct 58 ms 17484 KB Output is correct
60 Correct 82 ms 21732 KB Output is correct
61 Correct 96 ms 25032 KB Output is correct
62 Correct 103 ms 27336 KB Output is correct
63 Correct 122 ms 32620 KB Output is correct
64 Correct 123 ms 34076 KB Output is correct
65 Correct 60 ms 32080 KB Output is correct
66 Correct 60 ms 32084 KB Output is correct
67 Correct 60 ms 32080 KB Output is correct
68 Correct 111 ms 31176 KB Output is correct
69 Correct 124 ms 30668 KB Output is correct
70 Correct 114 ms 30668 KB Output is correct
71 Correct 135 ms 40804 KB Output is correct
72 Correct 143 ms 41012 KB Output is correct
73 Correct 113 ms 37096 KB Output is correct
74 Correct 114 ms 38684 KB Output is correct
75 Correct 117 ms 36676 KB Output is correct
76 Correct 123 ms 36744 KB Output is correct
77 Correct 124 ms 35012 KB Output is correct
78 Correct 121 ms 36040 KB Output is correct
79 Correct 105 ms 35952 KB Output is correct