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Submission #470551

# Submission time Handle Problem Language Result Execution time Memory
470551 2021-09-04T08:43:46 Z BThero Fireworks (APIO16_fireworks) C++17
55 / 100
 1917 ms 23852 KB 
#include <bits/stdc++.h>

#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()

using namespace std;

typedef long long ll;

const int MAXN = (int)1e5 + 5;

struct dp_t {
    ll h0, a0;
    multiset<ll> S;

    dp_t() {
        h0 = a0 = 0;
    }

    ll get(ll x) {
        ll val = h0;
        ll slope = a0;
        ll pos = 0;

        for (ll pt : S) {
            if (pt >= x) {
                break;
            }

            val += slope * (pt - pos);
            pos = pt;
            slope++;
        }

        val += (x - pos) * slope;
        return val;
    }
} dp[MAXN];

int par[MAXN], edge_len[MAXN];
vector<int> adj[MAXN];
int n, m;

int main() {
    cin >> n >> m;

    for (int i = 2; i <= n + m; i++) {
        cin >> par[i] >> edge_len[i];
        adj[par[i]].push_back(i);
    }

    for (int v = n + m; v > n; v--) {
        dp[v].h0 = edge_len[v];
        dp[v].a0 = -1;
        dp[v].S.insert(edge_len[v]);
        dp[v].S.insert(edge_len[v]);
    }

    for (int v = n; v > 0; v--) {
        for (int to : adj[v]) {
            dp[v].h0 += dp[to].h0;
            dp[v].a0 += dp[to].a0;

            for (ll pt : dp[to].S) {
                dp[v].S.insert(pt);
            }

            dp[to].S.clear();
        }

        while (!dp[v].S.empty() && dp[v].a0 + sz(dp[v].S) > 1) {
            dp[v].S.erase(prev(dp[v].S.end()));
        }

        assert(sz(dp[v].S) >= 2);
        dp[v].h0 += edge_len[v];
        ll P = *dp[v].S.rbegin();
        dp[v].S.erase(prev(dp[v].S.end()));
        ll Q = *dp[v].S.rbegin();
        dp[v].S.erase(prev(dp[v].S.end()));
        dp[v].S.insert(P + edge_len[v]);
        dp[v].S.insert(Q + edge_len[v]);
    }

    ll val = dp[1].h0, slope = dp[1].a0;
    ll pos = 0;

    for (ll pt : dp[1].S) {
        val += (pt - pos) * slope;
        pos = pt;
        slope++;
        if (slope == 0) break;
    }

    cout << val << endl;
	return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8908 KB Output is correct
2 Correct 6 ms 8908 KB Output is correct
3 Correct 7 ms 8908 KB Output is correct
4 Correct 5 ms 8880 KB Output is correct
5 Correct 5 ms 8908 KB Output is correct
6 Correct 5 ms 8908 KB Output is correct
7 Correct 6 ms 8908 KB Output is correct
8 Correct 5 ms 8908 KB Output is correct
9 Correct 5 ms 8908 KB Output is correct
10 Correct 5 ms 8908 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8908 KB Output is correct
2 Correct 5 ms 8908 KB Output is correct
3 Correct 5 ms 8908 KB Output is correct
4 Correct 5 ms 8908 KB Output is correct
5 Correct 5 ms 8908 KB Output is correct
6 Correct 5 ms 8908 KB Output is correct
7 Correct 6 ms 8908 KB Output is correct
8 Correct 5 ms 8916 KB Output is correct
9 Correct 6 ms 8908 KB Output is correct
10 Correct 5 ms 8908 KB Output is correct
11 Correct 5 ms 8908 KB Output is correct
12 Correct 5 ms 8852 KB Output is correct
13 Correct 5 ms 8908 KB Output is correct
14 Correct 5 ms 8804 KB Output is correct
15 Correct 5 ms 8908 KB Output is correct
16 Correct 6 ms 8872 KB Output is correct
17 Correct 6 ms 8908 KB Output is correct
18 Correct 6 ms 8908 KB Output is correct
19 Correct 6 ms 8908 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8908 KB Output is correct
2 Correct 6 ms 8908 KB Output is correct
3 Correct 7 ms 8908 KB Output is correct
4 Correct 5 ms 8880 KB Output is correct
5 Correct 5 ms 8908 KB Output is correct
6 Correct 5 ms 8908 KB Output is correct
7 Correct 6 ms 8908 KB Output is correct
8 Correct 5 ms 8908 KB Output is correct
9 Correct 5 ms 8908 KB Output is correct
10 Correct 5 ms 8908 KB Output is correct
11 Correct 5 ms 8908 KB Output is correct
12 Correct 5 ms 8908 KB Output is correct
13 Correct 5 ms 8908 KB Output is correct
14 Correct 5 ms 8908 KB Output is correct
15 Correct 5 ms 8908 KB Output is correct
16 Correct 5 ms 8908 KB Output is correct
17 Correct 6 ms 8908 KB Output is correct
18 Correct 5 ms 8916 KB Output is correct
19 Correct 6 ms 8908 KB Output is correct
20 Correct 5 ms 8908 KB Output is correct
21 Correct 5 ms 8908 KB Output is correct
22 Correct 5 ms 8852 KB Output is correct
23 Correct 5 ms 8908 KB Output is correct
24 Correct 5 ms 8804 KB Output is correct
25 Correct 5 ms 8908 KB Output is correct
26 Correct 6 ms 8872 KB Output is correct
27 Correct 6 ms 8908 KB Output is correct
28 Correct 6 ms 8908 KB Output is correct
29 Correct 6 ms 8908 KB Output is correct
30 Correct 6 ms 8908 KB Output is correct
31 Correct 8 ms 8908 KB Output is correct
32 Correct 9 ms 8936 KB Output is correct
33 Correct 11 ms 9040 KB Output is correct
34 Correct 13 ms 9076 KB Output is correct
35 Correct 20 ms 9184 KB Output is correct
36 Correct 18 ms 9220 KB Output is correct
37 Correct 18 ms 9264 KB Output is correct
38 Correct 37 ms 9264 KB Output is correct
39 Correct 21 ms 9292 KB Output is correct
40 Correct 10 ms 9164 KB Output is correct
41 Correct 12 ms 9168 KB Output is correct
42 Correct 10 ms 9164 KB Output is correct
43 Correct 368 ms 9308 KB Output is correct
44 Correct 279 ms 9320 KB Output is correct
45 Correct 259 ms 9328 KB Output is correct
46 Correct 11 ms 9436 KB Output is correct
47 Correct 11 ms 9420 KB Output is correct
48 Correct 13 ms 9436 KB Output is correct
49 Correct 11 ms 9420 KB Output is correct
50 Correct 10 ms 9308 KB Output is correct
51 Correct 10 ms 9408 KB Output is correct
52 Correct 18 ms 9436 KB Output is correct
53 Correct 14 ms 9432 KB Output is correct
54 Correct 10 ms 9420 KB Output is correct

Subtask #4
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8908 KB Output is correct
2 Correct 6 ms 8908 KB Output is correct
3 Correct 7 ms 8908 KB Output is correct
4 Correct 5 ms 8880 KB Output is correct
5 Correct 5 ms 8908 KB Output is correct
6 Correct 5 ms 8908 KB Output is correct
7 Correct 6 ms 8908 KB Output is correct
8 Correct 5 ms 8908 KB Output is correct
9 Correct 5 ms 8908 KB Output is correct
10 Correct 5 ms 8908 KB Output is correct
11 Correct 5 ms 8908 KB Output is correct
12 Correct 5 ms 8908 KB Output is correct
13 Correct 5 ms 8908 KB Output is correct
14 Correct 5 ms 8908 KB Output is correct
15 Correct 5 ms 8908 KB Output is correct
16 Correct 5 ms 8908 KB Output is correct
17 Correct 6 ms 8908 KB Output is correct
18 Correct 5 ms 8916 KB Output is correct
19 Correct 6 ms 8908 KB Output is correct
20 Correct 5 ms 8908 KB Output is correct
21 Correct 5 ms 8908 KB Output is correct
22 Correct 5 ms 8852 KB Output is correct
23 Correct 5 ms 8908 KB Output is correct
24 Correct 5 ms 8804 KB Output is correct
25 Correct 5 ms 8908 KB Output is correct
26 Correct 6 ms 8872 KB Output is correct
27 Correct 6 ms 8908 KB Output is correct
28 Correct 6 ms 8908 KB Output is correct
29 Correct 6 ms 8908 KB Output is correct
30 Correct 6 ms 8908 KB Output is correct
31 Correct 8 ms 8908 KB Output is correct
32 Correct 9 ms 8936 KB Output is correct
33 Correct 11 ms 9040 KB Output is correct
34 Correct 13 ms 9076 KB Output is correct
35 Correct 20 ms 9184 KB Output is correct
36 Correct 18 ms 9220 KB Output is correct
37 Correct 18 ms 9264 KB Output is correct
38 Correct 37 ms 9264 KB Output is correct
39 Correct 21 ms 9292 KB Output is correct
40 Correct 10 ms 9164 KB Output is correct
41 Correct 12 ms 9168 KB Output is correct
42 Correct 10 ms 9164 KB Output is correct
43 Correct 368 ms 9308 KB Output is correct
44 Correct 279 ms 9320 KB Output is correct
45 Correct 259 ms 9328 KB Output is correct
46 Correct 11 ms 9436 KB Output is correct
47 Correct 11 ms 9420 KB Output is correct
48 Correct 13 ms 9436 KB Output is correct
49 Correct 11 ms 9420 KB Output is correct
50 Correct 10 ms 9308 KB Output is correct
51 Correct 10 ms 9408 KB Output is correct
52 Correct 18 ms 9436 KB Output is correct
53 Correct 14 ms 9432 KB Output is correct
54 Correct 10 ms 9420 KB Output is correct
55 Correct 84 ms 9804 KB Output is correct
56 Correct 882 ms 12244 KB Output is correct
57 Correct 1917 ms 14372 KB Output is correct
58 Runtime error 111 ms 23852 KB Execution killed with signal 11
59 Halted 0 ms 0 KB -