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Submission #689725

# Submission time Handle Problem Language Result Execution time Memory
689725 2023-01-29T07:38:23 Z overwatch9 Dynamic Diameter (CEOI19_diameter) C++17
24 / 100
 1166 ms 2056 KB 
// subtask12
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
using ll = long long;
const int MAX_N = 5000 + 1;
vector <pair <int, ll>> adj[MAX_N];
struct edge {
    int a, b;
    ll w;
};
edge edges[MAX_N];
int node;
ll max_dis;
int N, Q;
ll W;
void dfs(int s, int p, ll dis) {
    if (dis > max_dis) {
        node = s;
        max_dis = dis;
    }
    for (auto i : adj[s]) {
        if (i.first == p)
            continue;
        dfs(i.first, s, dis + i.second);
    }
}
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    cin >> N >> Q >> W;
    for (int i = 0; i < N-1; i++) {
        int a, b;
        ll w;
        cin >> a >> b >> w;
        adj[a].push_back({b, w});
        adj[b].push_back({a, w});
        edge tp;
        tp.a = a;
        tp.b = b;
        tp.w = w;
        edges[i] = tp;
    }
    for (int i = 1; i <= N; i++)
        sort(adj[i].begin(), adj[i].end());
    ll last = 0;
    while (Q--) {
        ll d;
        ll e;
        cin >> d >> e;
        d = (d + last) % (N-1);
        e = (e + last) % (W);
        int a = edges[d].a, b = edges[d].b;
        pair <int, ll> tp = {b, 0};
        auto x = lower_bound(adj[a].begin(), adj[a].end(), tp);
        x->second = e;
        tp = {a, 0};
        x = lower_bound(adj[b].begin(), adj[b].end(), tp);
        x->second = e;
        edges[d].w = e;
        max_dis = 0;
        dfs(1, 1, 0);
        max_dis = 0;
        dfs(node, node, 0);
        last = max_dis;
        cout << max_dis << '\n';
    }
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 96 ms 516 KB Output is correct
20 Correct 105 ms 588 KB Output is correct
21 Correct 121 ms 572 KB Output is correct
22 Correct 151 ms 628 KB Output is correct
23 Correct 779 ms 884 KB Output is correct
24 Correct 922 ms 908 KB Output is correct
25 Correct 1022 ms 1072 KB Output is correct
26 Correct 1166 ms 1356 KB Output is correct

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 9 ms 508 KB Output is correct
5 Correct 44 ms 800 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 8 ms 492 KB Output is correct
10 Correct 80 ms 524 KB Output is correct
11 Correct 402 ms 1780 KB Output is correct
12 Runtime error 2 ms 1492 KB Execution killed with signal 11
13 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 516 KB Output is correct
2 Correct 108 ms 544 KB Output is correct
3 Correct 544 ms 1228 KB Output is correct
4 Correct 1086 ms 2056 KB Output is correct
5 Runtime error 3 ms 1484 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #5
0 / 24.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 596 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 96 ms 516 KB Output is correct
20 Correct 105 ms 588 KB Output is correct
21 Correct 121 ms 572 KB Output is correct
22 Correct 151 ms 628 KB Output is correct
23 Correct 779 ms 884 KB Output is correct
24 Correct 922 ms 908 KB Output is correct
25 Correct 1022 ms 1072 KB Output is correct
26 Correct 1166 ms 1356 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 0 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 9 ms 508 KB Output is correct
31 Correct 44 ms 800 KB Output is correct
32 Correct 0 ms 340 KB Output is correct
33 Correct 1 ms 468 KB Output is correct
34 Correct 1 ms 468 KB Output is correct
35 Correct 8 ms 492 KB Output is correct
36 Correct 80 ms 524 KB Output is correct
37 Correct 402 ms 1780 KB Output is correct
38 Runtime error 2 ms 1492 KB Execution killed with signal 11
39 Halted 0 ms 0 KB -