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Submission #377501

# Submission time Handle Problem Language Result Execution time Memory
377501 2021-03-14T09:21:40 Z dolphingarlic Dynamic Diameter (CEOI19_diameter) C++14
49 / 100
 5000 ms 35176 KB 
#include <bits/stdc++.h>
typedef long long ll;
using namespace std;

ll edge[100001], dp[100001], to_par[100001];
vector<pair<int, int>> graph[100001];
int par[100001], upper[100001], lower[100001];
multiset<ll> ms[100001], all;

void dfs(int node = 1, int parent = 0) {
    par[node] = parent;
    ms[node].insert(0);
    for (pair<int, int> i : graph[node]) if (i.first != parent) {
        upper[i.second] = node, lower[i.second] = i.first;
        to_par[i.first] = i.second;
        dfs(i.first, node);
        ms[node].insert(dp[i.first] + edge[i.second]);
    }
    dp[node] = *ms[node].rbegin();
    all.insert(dp[node] + *next(ms[node].rbegin()));
}

void propagate(int node, ll prv, ll curr) {
    if (prv == curr) return;

    ll par_prv = dp[node] + edge[to_par[node]];

    all.erase(all.find(dp[node] + *next(ms[node].rbegin())));
    ms[node].erase(ms[node].find(prv));
    ms[node].insert(curr);
    dp[node] = *ms[node].rbegin();
    all.insert(dp[node] + *next(ms[node].rbegin()));

    ll par_curr = dp[node] + edge[to_par[node]];

    if (par[node]) propagate(par[node], par_prv, par_curr);
}

int main() {
    cin.tie(0)->sync_with_stdio(0);
    int n, q;
    ll w;
    cin >> n >> q >> w;
    for (int i = 0; i < n - 1; i++) {
        int u, v;
        cin >> u >> v >> edge[i];
        graph[u].push_back({v, i});
        graph[v].push_back({u, i});
    }
    dfs();

    ll last = 0;
    while (q--) {
        int d;
        ll e;
        cin >> d >> e;
        d = (d + last) % (n - 1);
        e = (e + last) % w;

        propagate(upper[d], dp[lower[d]] + edge[d], dp[lower[d]] + e);
        edge[d] = e;

        last = *all.rbegin();
        cout << last << '\n';
    }
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7404 KB Output is correct
2 Correct 6 ms 7532 KB Output is correct
3 Correct 6 ms 7404 KB Output is correct
4 Correct 6 ms 7404 KB Output is correct
5 Correct 6 ms 7404 KB Output is correct
6 Correct 5 ms 7532 KB Output is correct
7 Correct 6 ms 7404 KB Output is correct
8 Correct 7 ms 7404 KB Output is correct
9 Correct 6 ms 7404 KB Output is correct
10 Correct 6 ms 7404 KB Output is correct
11 Correct 6 ms 7404 KB Output is correct
12 Correct 6 ms 7404 KB Output is correct
13 Correct 6 ms 7404 KB Output is correct
14 Correct 6 ms 7404 KB Output is correct
15 Correct 6 ms 7404 KB Output is correct
16 Correct 6 ms 7404 KB Output is correct
17 Correct 6 ms 7404 KB Output is correct
18 Correct 7 ms 7404 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7404 KB Output is correct
2 Correct 6 ms 7532 KB Output is correct
3 Correct 6 ms 7404 KB Output is correct
4 Correct 6 ms 7404 KB Output is correct
5 Correct 6 ms 7404 KB Output is correct
6 Correct 5 ms 7532 KB Output is correct
7 Correct 6 ms 7404 KB Output is correct
8 Correct 7 ms 7404 KB Output is correct
9 Correct 6 ms 7404 KB Output is correct
10 Correct 6 ms 7404 KB Output is correct
11 Correct 6 ms 7404 KB Output is correct
12 Correct 6 ms 7404 KB Output is correct
13 Correct 6 ms 7404 KB Output is correct
14 Correct 6 ms 7404 KB Output is correct
15 Correct 6 ms 7404 KB Output is correct
16 Correct 6 ms 7404 KB Output is correct
17 Correct 6 ms 7404 KB Output is correct
18 Correct 7 ms 7404 KB Output is correct
19 Correct 21 ms 7788 KB Output is correct
20 Correct 40 ms 7788 KB Output is correct
21 Correct 87 ms 7788 KB Output is correct
22 Correct 291 ms 7788 KB Output is correct
23 Correct 27 ms 8704 KB Output is correct
24 Correct 89 ms 8684 KB Output is correct
25 Correct 290 ms 8824 KB Output is correct
26 Correct 3016 ms 9332 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7404 KB Output is correct
2 Correct 6 ms 7404 KB Output is correct
3 Correct 6 ms 7404 KB Output is correct
4 Correct 15 ms 7660 KB Output is correct
5 Correct 54 ms 8556 KB Output is correct
6 Correct 6 ms 7404 KB Output is correct
7 Correct 6 ms 7532 KB Output is correct
8 Correct 6 ms 7532 KB Output is correct
9 Correct 8 ms 7532 KB Output is correct
10 Correct 18 ms 7788 KB Output is correct
11 Correct 65 ms 8812 KB Output is correct
12 Correct 10 ms 8556 KB Output is correct
13 Correct 13 ms 8556 KB Output is correct
14 Correct 12 ms 8556 KB Output is correct
15 Correct 26 ms 8812 KB Output is correct
16 Correct 91 ms 9964 KB Output is correct
17 Correct 150 ms 30176 KB Output is correct
18 Correct 162 ms 30304 KB Output is correct
19 Correct 159 ms 30176 KB Output is correct
20 Correct 201 ms 30432 KB Output is correct
21 Correct 461 ms 31972 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 7660 KB Output is correct
2 Correct 19 ms 7788 KB Output is correct
3 Correct 68 ms 8432 KB Output is correct
4 Correct 130 ms 9068 KB Output is correct
5 Correct 16 ms 9708 KB Output is correct
6 Correct 33 ms 9836 KB Output is correct
7 Correct 109 ms 10476 KB Output is correct
8 Correct 197 ms 11244 KB Output is correct
9 Correct 84 ms 19180 KB Output is correct
10 Correct 119 ms 19088 KB Output is correct
11 Correct 200 ms 19852 KB Output is correct
12 Correct 409 ms 20844 KB Output is correct
13 Correct 135 ms 30572 KB Output is correct
14 Correct 164 ms 30700 KB Output is correct
15 Correct 354 ms 31596 KB Output is correct
16 Correct 490 ms 32108 KB Output is correct
17 Correct 748 ms 32052 KB Output is correct

Subtask #5
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1143 ms 34412 KB Output is correct
2 Correct 1119 ms 34488 KB Output is correct
3 Correct 1108 ms 34636 KB Output is correct
4 Correct 1098 ms 34412 KB Output is correct
5 Correct 1103 ms 34464 KB Output is correct
6 Correct 949 ms 34688 KB Output is correct
7 Execution timed out 5063 ms 35176 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7404 KB Output is correct
2 Correct 6 ms 7532 KB Output is correct
3 Correct 6 ms 7404 KB Output is correct
4 Correct 6 ms 7404 KB Output is correct
5 Correct 6 ms 7404 KB Output is correct
6 Correct 5 ms 7532 KB Output is correct
7 Correct 6 ms 7404 KB Output is correct
8 Correct 7 ms 7404 KB Output is correct
9 Correct 6 ms 7404 KB Output is correct
10 Correct 6 ms 7404 KB Output is correct
11 Correct 6 ms 7404 KB Output is correct
12 Correct 6 ms 7404 KB Output is correct
13 Correct 6 ms 7404 KB Output is correct
14 Correct 6 ms 7404 KB Output is correct
15 Correct 6 ms 7404 KB Output is correct
16 Correct 6 ms 7404 KB Output is correct
17 Correct 6 ms 7404 KB Output is correct
18 Correct 7 ms 7404 KB Output is correct
19 Correct 21 ms 7788 KB Output is correct
20 Correct 40 ms 7788 KB Output is correct
21 Correct 87 ms 7788 KB Output is correct
22 Correct 291 ms 7788 KB Output is correct
23 Correct 27 ms 8704 KB Output is correct
24 Correct 89 ms 8684 KB Output is correct
25 Correct 290 ms 8824 KB Output is correct
26 Correct 3016 ms 9332 KB Output is correct
27 Correct 6 ms 7404 KB Output is correct
28 Correct 6 ms 7404 KB Output is correct
29 Correct 6 ms 7404 KB Output is correct
30 Correct 15 ms 7660 KB Output is correct
31 Correct 54 ms 8556 KB Output is correct
32 Correct 6 ms 7404 KB Output is correct
33 Correct 6 ms 7532 KB Output is correct
34 Correct 6 ms 7532 KB Output is correct
35 Correct 8 ms 7532 KB Output is correct
36 Correct 18 ms 7788 KB Output is correct
37 Correct 65 ms 8812 KB Output is correct
38 Correct 10 ms 8556 KB Output is correct
39 Correct 13 ms 8556 KB Output is correct
40 Correct 12 ms 8556 KB Output is correct
41 Correct 26 ms 8812 KB Output is correct
42 Correct 91 ms 9964 KB Output is correct
43 Correct 150 ms 30176 KB Output is correct
44 Correct 162 ms 30304 KB Output is correct
45 Correct 159 ms 30176 KB Output is correct
46 Correct 201 ms 30432 KB Output is correct
47 Correct 461 ms 31972 KB Output is correct
48 Correct 8 ms 7660 KB Output is correct
49 Correct 19 ms 7788 KB Output is correct
50 Correct 68 ms 8432 KB Output is correct
51 Correct 130 ms 9068 KB Output is correct
52 Correct 16 ms 9708 KB Output is correct
53 Correct 33 ms 9836 KB Output is correct
54 Correct 109 ms 10476 KB Output is correct
55 Correct 197 ms 11244 KB Output is correct
56 Correct 84 ms 19180 KB Output is correct
57 Correct 119 ms 19088 KB Output is correct
58 Correct 200 ms 19852 KB Output is correct
59 Correct 409 ms 20844 KB Output is correct
60 Correct 135 ms 30572 KB Output is correct
61 Correct 164 ms 30700 KB Output is correct
62 Correct 354 ms 31596 KB Output is correct
63 Correct 490 ms 32108 KB Output is correct
64 Correct 748 ms 32052 KB Output is correct
65 Correct 1143 ms 34412 KB Output is correct
66 Correct 1119 ms 34488 KB Output is correct
67 Correct 1108 ms 34636 KB Output is correct
68 Correct 1098 ms 34412 KB Output is correct
69 Correct 1103 ms 34464 KB Output is correct
70 Correct 949 ms 34688 KB Output is correct
71 Execution timed out 5063 ms 35176 KB Time limit exceeded
72 Halted 0 ms 0 KB -