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Submission #490601

# Submission time Handle Problem Language Result Execution time Memory
490601 2021-11-28T09:25:11 Z radal Dynamic Diameter (CEOI19_diameter) C++14
24 / 100
 5000 ms 8036 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("O3,no-stack-protector,unroll-loops")
#pragma GCC target("avx2,fma")
#define rep(i,l,r) for (int i = l; i < r; i++)
#define repr(i,r,l) for (int i = r; i >= l; i--)
#define X first
#define Y second
#define pb push_back
#define endl '\n'
#define debug(x) cerr << #x << " : " << x << endl;
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pll;
typedef pair<long double,long double> pld;
const long long int N = 1e5+10,mod = 1e9+7,inf = 1e9,sq = 700,sig = 26;
inline int mkay(int a,int b){
    if (a+b >= mod) return a+b-mod;
    if (a+b < 0) return a+b+mod;
    return a+b;
}
inline int poww(int n,int k){
    int c = 1;
    while (k){
        if (k&1) c = (1ll*c*n)%mod;
        n = (1ll*n*n)%mod;
        k >>= 1;
    }
    return c;
}
vector<pll> adj[N];
ll e[N];
ll h[N];
int dfs(int v,int p){
    ll mx = h[v];
    int w = v;
    for (pll u : adj[v]){
        if(u.X == p) continue;
        h[u.X] = h[v]+e[u.Y];
        int x = dfs(u.X,v);
        if (h[x] > mx){
            mx = h[x];
            w = x;
        }
    }
    return w;
}
int main(){
    ios :: sync_with_stdio(0); cin.tie(0);cout.tie(0);
    int n,q;
    ll w;
    cin >> n >> q >> w;
    rep(i,0,n-1){
        int u,v;
        ll d;
        cin >> u >> v >> d;
        e[i] = d;
        adj[u].pb({v,i});
        adj[v].pb({u,i});
    }
    ll last = 0;
    while (q--){
        int d;
        ll x;
        cin >> d >> x;
        d = (d+last)%(n-1);
        x = (x+last)%w;
        e[d] = x;
        h[1] = 0;
        int u = dfs(1,-1);
        h[u] = 0;
        int v = dfs(u,-1);
        cout << h[v] << endl;
        last = h[v];
    }
    return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2636 KB Output is correct
2 Correct 1 ms 2636 KB Output is correct
3 Correct 1 ms 2636 KB Output is correct
4 Correct 1 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 2 ms 2668 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 2 ms 2636 KB Output is correct
11 Correct 2 ms 2636 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 2 ms 2636 KB Output is correct
15 Correct 2 ms 2636 KB Output is correct
16 Correct 2 ms 2592 KB Output is correct
17 Correct 2 ms 2636 KB Output is correct
18 Correct 2 ms 2636 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2636 KB Output is correct
2 Correct 1 ms 2636 KB Output is correct
3 Correct 1 ms 2636 KB Output is correct
4 Correct 1 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 2 ms 2668 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 2 ms 2636 KB Output is correct
11 Correct 2 ms 2636 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 2 ms 2636 KB Output is correct
15 Correct 2 ms 2636 KB Output is correct
16 Correct 2 ms 2592 KB Output is correct
17 Correct 2 ms 2636 KB Output is correct
18 Correct 2 ms 2636 KB Output is correct
19 Correct 189 ms 2796 KB Output is correct
20 Correct 184 ms 2904 KB Output is correct
21 Correct 178 ms 2796 KB Output is correct
22 Correct 179 ms 2816 KB Output is correct
23 Correct 1359 ms 3200 KB Output is correct
24 Correct 1397 ms 3180 KB Output is correct
25 Correct 1427 ms 3108 KB Output is correct
26 Correct 1361 ms 3364 KB Output is correct

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 3 ms 2636 KB Output is correct
4 Correct 15 ms 2848 KB Output is correct
5 Correct 54 ms 3100 KB Output is correct
6 Correct 1 ms 2636 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 3 ms 2636 KB Output is correct
9 Correct 15 ms 2680 KB Output is correct
10 Correct 134 ms 2816 KB Output is correct
11 Correct 620 ms 3280 KB Output is correct
12 Correct 4 ms 2892 KB Output is correct
13 Correct 21 ms 3000 KB Output is correct
14 Correct 128 ms 3024 KB Output is correct
15 Correct 1222 ms 3276 KB Output is correct
16 Execution timed out 5057 ms 3688 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 2636 KB Output is correct
2 Correct 230 ms 2756 KB Output is correct
3 Correct 1102 ms 2968 KB Output is correct
4 Correct 2199 ms 3348 KB Output is correct
5 Correct 257 ms 3324 KB Output is correct
6 Correct 2482 ms 3208 KB Output is correct
7 Execution timed out 5053 ms 3420 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 5073 ms 8036 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2636 KB Output is correct
2 Correct 1 ms 2636 KB Output is correct
3 Correct 1 ms 2636 KB Output is correct
4 Correct 1 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 2 ms 2668 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 2 ms 2636 KB Output is correct
11 Correct 2 ms 2636 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 2 ms 2636 KB Output is correct
15 Correct 2 ms 2636 KB Output is correct
16 Correct 2 ms 2592 KB Output is correct
17 Correct 2 ms 2636 KB Output is correct
18 Correct 2 ms 2636 KB Output is correct
19 Correct 189 ms 2796 KB Output is correct
20 Correct 184 ms 2904 KB Output is correct
21 Correct 178 ms 2796 KB Output is correct
22 Correct 179 ms 2816 KB Output is correct
23 Correct 1359 ms 3200 KB Output is correct
24 Correct 1397 ms 3180 KB Output is correct
25 Correct 1427 ms 3108 KB Output is correct
26 Correct 1361 ms 3364 KB Output is correct
27 Correct 2 ms 2636 KB Output is correct
28 Correct 2 ms 2636 KB Output is correct
29 Correct 3 ms 2636 KB Output is correct
30 Correct 15 ms 2848 KB Output is correct
31 Correct 54 ms 3100 KB Output is correct
32 Correct 1 ms 2636 KB Output is correct
33 Correct 2 ms 2636 KB Output is correct
34 Correct 3 ms 2636 KB Output is correct
35 Correct 15 ms 2680 KB Output is correct
36 Correct 134 ms 2816 KB Output is correct
37 Correct 620 ms 3280 KB Output is correct
38 Correct 4 ms 2892 KB Output is correct
39 Correct 21 ms 3000 KB Output is correct
40 Correct 128 ms 3024 KB Output is correct
41 Correct 1222 ms 3276 KB Output is correct
42 Execution timed out 5057 ms 3688 KB Time limit exceeded
43 Halted 0 ms 0 KB -