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Submission #618867

# Submission time Handle Problem Language Result Execution time Memory
618867 2022-08-02T08:02:59 Z sentheta Dynamic Diameter (CEOI19_diameter) C++17
24 / 100
 5000 ms 10168 KB 
#include<algorithm>
#include<iostream>
#include<cassert>
#include<vector>
#include<string>
#include<array>
#include<stack>
#include<queue>
#include<map>
#include<set>
using namespace std;

#define V vector
#define Int long long
#define rep(i,a,b) for(int i=(int)(a); i<(int)(b); i++)
#define nl '\n'
#define dbg(x) cout << "?" << #x << " : " << x << endl;
#define all(x) (x).begin(), (x).end()

#define int long long
#define pii pair<int,int>

const int N = 1e5+5;
int n, q, wlim;
V<array<int,3>> edges;
V<pair<int,int>> queries;

struct Sub1{
	V<int> adj[N];
	int mxdist = 0, mxnode = -1;
	void dfs(int x,int par=-1,int dist=0){
		if(dist >= mxdist){
			mxdist = dist;
			mxnode = x;
		}

		for(int id : adj[x]){
			int y = edges[id][0]^edges[id][1]^x;
			int w = edges[id][2];
			if(y==par) continue;

			dfs(y,x, dist+w);
		}
	}
	void run(){
		rep(i,0,n-1){
			auto[u,v,w] = edges[i];
			adj[u].push_back(i);
			adj[v].push_back(i);
		}

		int last = 0;
		for(auto[i,w] : queries){
			i = (i+last)%(n-1);
			w = (w+last)%wlim;
			edges[i][2] = w;

			mxdist = 0;
			dfs(1);
			dfs(mxnode);

			cout << mxdist << nl;
			last = mxdist;
		}
	}
};

signed main(){

	cin >> n >> q >> wlim;
	
	rep(i,0,n-1){
		int u, v, w;
		cin >> u >> v >> w;

		edges.push_back({u,v,w});
	}
	rep(i,0,q){
		int idx, w;
		cin >> idx >> w;

		queries.push_back({idx,w});
	}

	Sub1 sub; sub.run(); return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2588 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2588 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 188 ms 2900 KB Output is correct
20 Correct 218 ms 2892 KB Output is correct
21 Correct 204 ms 2896 KB Output is correct
22 Correct 255 ms 2936 KB Output is correct
23 Correct 1459 ms 3084 KB Output is correct
24 Correct 1591 ms 3184 KB Output is correct
25 Correct 1615 ms 3096 KB Output is correct
26 Correct 1787 ms 3456 KB Output is correct

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 3 ms 2644 KB Output is correct
4 Correct 19 ms 3204 KB Output is correct
5 Correct 95 ms 4760 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 6 ms 2644 KB Output is correct
9 Correct 22 ms 2724 KB Output is correct
10 Correct 222 ms 3280 KB Output is correct
11 Correct 1004 ms 4800 KB Output is correct
12 Correct 8 ms 2900 KB Output is correct
13 Correct 29 ms 2964 KB Output is correct
14 Correct 183 ms 2992 KB Output is correct
15 Correct 1815 ms 3484 KB Output is correct
16 Execution timed out 5064 ms 4864 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 2732 KB Output is correct
2 Correct 227 ms 3028 KB Output is correct
3 Correct 1006 ms 3740 KB Output is correct
4 Correct 2005 ms 4804 KB Output is correct
5 Correct 233 ms 3288 KB Output is correct
6 Correct 2282 ms 3600 KB Output is correct
7 Execution timed out 5042 ms 4600 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #5
0 / 24.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5059 ms 10168 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2588 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 188 ms 2900 KB Output is correct
20 Correct 218 ms 2892 KB Output is correct
21 Correct 204 ms 2896 KB Output is correct
22 Correct 255 ms 2936 KB Output is correct
23 Correct 1459 ms 3084 KB Output is correct
24 Correct 1591 ms 3184 KB Output is correct
25 Correct 1615 ms 3096 KB Output is correct
26 Correct 1787 ms 3456 KB Output is correct
27 Correct 1 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 3 ms 2644 KB Output is correct
30 Correct 19 ms 3204 KB Output is correct
31 Correct 95 ms 4760 KB Output is correct
32 Correct 2 ms 2644 KB Output is correct
33 Correct 2 ms 2644 KB Output is correct
34 Correct 6 ms 2644 KB Output is correct
35 Correct 22 ms 2724 KB Output is correct
36 Correct 222 ms 3280 KB Output is correct
37 Correct 1004 ms 4800 KB Output is correct
38 Correct 8 ms 2900 KB Output is correct
39 Correct 29 ms 2964 KB Output is correct
40 Correct 183 ms 2992 KB Output is correct
41 Correct 1815 ms 3484 KB Output is correct
42 Execution timed out 5064 ms 4864 KB Time limit exceeded
43 Halted 0 ms 0 KB -