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Submission #884729

# Submission time Handle Problem Language Result Execution time Memory
884729 2023-12-08T09:18:01 Z Alish Dynamic Diameter (CEOI19_diameter) C++17
24 / 100
 5000 ms 16892 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long int	ll;
typedef pair<int, int>	pii;
typedef pair<ll, ll>	pll;


#define F		        first
#define S		        second
#define pb		        push_back
#define endl            '\n'
#define Mp		        make_pair
#define all(x)          x.begin(), x.end()
#define debug(x)        cerr << #x << " = " << x << endl;
#define fast_io         ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define file_io         freopen("connect.in" , "r" , stdin) ; freopen("connect.out" , "w" , stdout);


ll mod = 1e9+7 ;

const int N = 1e5+23;
vector<pll> g[N];
int st[N], ft[N], tim, pos[N];
vector<pair<pll, ll> > E;
ll seg[4*N], lpz[4*N];
int n, q;
ll h[N];
ll ans[N];


pll di;
void dfs(int v, int p=0){
    di=max(di, {h[v], v});
    for (auto pp: g[v]){
        ll u=pp.F, w=ans[pp.S];
        if(u==p) continue;
        h[u]=h[v]+w;
        dfs(u, v);
    }

}




int main()
{
    fast_io
    cin>>n>>q>>mod;

    for (int i=0; i<n-1; i++){
        ll u, v, w; cin>>v>>u>>w;
        g[v].pb({u, i}); g[u].pb({v, i});
        E.pb({{v, u}, w});
        ans[i]=w;
    }


    ll la=0;
    while(q--){
        ll i, w;
        cin>>i>>w;
        i=(i+la)%(n-1);
        w=(w+la)%mod;
        ans[i]=w;
        di={0, 0};
        dfs(1);
        int r=di.S;
        h[r]=0;

        di={0, 0};
        dfs(r);
        cout<<di.F<<endl;
        la=di.F;

    }

}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 7516 KB Output is correct
2 Correct 1 ms 7516 KB Output is correct
3 Correct 1 ms 7516 KB Output is correct
4 Correct 2 ms 7512 KB Output is correct
5 Correct 2 ms 7516 KB Output is correct
6 Correct 2 ms 7516 KB Output is correct
7 Correct 1 ms 7524 KB Output is correct
8 Correct 2 ms 7516 KB Output is correct
9 Correct 2 ms 7516 KB Output is correct
10 Correct 2 ms 7516 KB Output is correct
11 Correct 2 ms 7516 KB Output is correct
12 Correct 2 ms 7512 KB Output is correct
13 Correct 2 ms 7516 KB Output is correct
14 Correct 2 ms 7516 KB Output is correct
15 Correct 2 ms 7516 KB Output is correct
16 Correct 2 ms 7516 KB Output is correct
17 Correct 2 ms 7516 KB Output is correct
18 Correct 2 ms 7524 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 7516 KB Output is correct
2 Correct 1 ms 7516 KB Output is correct
3 Correct 1 ms 7516 KB Output is correct
4 Correct 2 ms 7512 KB Output is correct
5 Correct 2 ms 7516 KB Output is correct
6 Correct 2 ms 7516 KB Output is correct
7 Correct 1 ms 7524 KB Output is correct
8 Correct 2 ms 7516 KB Output is correct
9 Correct 2 ms 7516 KB Output is correct
10 Correct 2 ms 7516 KB Output is correct
11 Correct 2 ms 7516 KB Output is correct
12 Correct 2 ms 7512 KB Output is correct
13 Correct 2 ms 7516 KB Output is correct
14 Correct 2 ms 7516 KB Output is correct
15 Correct 2 ms 7516 KB Output is correct
16 Correct 2 ms 7516 KB Output is correct
17 Correct 2 ms 7516 KB Output is correct
18 Correct 2 ms 7524 KB Output is correct
19 Correct 71 ms 7660 KB Output is correct
20 Correct 74 ms 7676 KB Output is correct
21 Correct 79 ms 7684 KB Output is correct
22 Correct 108 ms 7516 KB Output is correct
23 Correct 749 ms 8272 KB Output is correct
24 Correct 996 ms 8288 KB Output is correct
25 Correct 1097 ms 8444 KB Output is correct
26 Correct 1215 ms 8700 KB Output is correct

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7516 KB Output is correct
2 Correct 1 ms 7516 KB Output is correct
3 Correct 2 ms 7516 KB Output is correct
4 Correct 10 ms 7516 KB Output is correct
5 Correct 42 ms 8380 KB Output is correct
6 Correct 2 ms 7516 KB Output is correct
7 Correct 2 ms 7516 KB Output is correct
8 Correct 3 ms 7516 KB Output is correct
9 Correct 11 ms 7516 KB Output is correct
10 Correct 91 ms 7772 KB Output is correct
11 Correct 451 ms 8784 KB Output is correct
12 Correct 5 ms 8284 KB Output is correct
13 Correct 11 ms 8028 KB Output is correct
14 Correct 88 ms 8052 KB Output is correct
15 Correct 905 ms 8536 KB Output is correct
16 Correct 4366 ms 9484 KB Output is correct
17 Correct 42 ms 15284 KB Output is correct
18 Correct 197 ms 15544 KB Output is correct
19 Correct 1849 ms 16280 KB Output is correct
20 Execution timed out 5054 ms 15916 KB Time limit exceeded
21 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 7516 KB Output is correct
2 Correct 107 ms 7980 KB Output is correct
3 Correct 527 ms 8300 KB Output is correct
4 Correct 1045 ms 8820 KB Output is correct
5 Correct 109 ms 8536 KB Output is correct
6 Correct 1076 ms 8596 KB Output is correct
7 Execution timed out 5058 ms 9276 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 5029 ms 16892 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 7516 KB Output is correct
2 Correct 1 ms 7516 KB Output is correct
3 Correct 1 ms 7516 KB Output is correct
4 Correct 2 ms 7512 KB Output is correct
5 Correct 2 ms 7516 KB Output is correct
6 Correct 2 ms 7516 KB Output is correct
7 Correct 1 ms 7524 KB Output is correct
8 Correct 2 ms 7516 KB Output is correct
9 Correct 2 ms 7516 KB Output is correct
10 Correct 2 ms 7516 KB Output is correct
11 Correct 2 ms 7516 KB Output is correct
12 Correct 2 ms 7512 KB Output is correct
13 Correct 2 ms 7516 KB Output is correct
14 Correct 2 ms 7516 KB Output is correct
15 Correct 2 ms 7516 KB Output is correct
16 Correct 2 ms 7516 KB Output is correct
17 Correct 2 ms 7516 KB Output is correct
18 Correct 2 ms 7524 KB Output is correct
19 Correct 71 ms 7660 KB Output is correct
20 Correct 74 ms 7676 KB Output is correct
21 Correct 79 ms 7684 KB Output is correct
22 Correct 108 ms 7516 KB Output is correct
23 Correct 749 ms 8272 KB Output is correct
24 Correct 996 ms 8288 KB Output is correct
25 Correct 1097 ms 8444 KB Output is correct
26 Correct 1215 ms 8700 KB Output is correct
27 Correct 2 ms 7516 KB Output is correct
28 Correct 1 ms 7516 KB Output is correct
29 Correct 2 ms 7516 KB Output is correct
30 Correct 10 ms 7516 KB Output is correct
31 Correct 42 ms 8380 KB Output is correct
32 Correct 2 ms 7516 KB Output is correct
33 Correct 2 ms 7516 KB Output is correct
34 Correct 3 ms 7516 KB Output is correct
35 Correct 11 ms 7516 KB Output is correct
36 Correct 91 ms 7772 KB Output is correct
37 Correct 451 ms 8784 KB Output is correct
38 Correct 5 ms 8284 KB Output is correct
39 Correct 11 ms 8028 KB Output is correct
40 Correct 88 ms 8052 KB Output is correct
41 Correct 905 ms 8536 KB Output is correct
42 Correct 4366 ms 9484 KB Output is correct
43 Correct 42 ms 15284 KB Output is correct
44 Correct 197 ms 15544 KB Output is correct
45 Correct 1849 ms 16280 KB Output is correct
46 Execution timed out 5054 ms 15916 KB Time limit exceeded
47 Halted 0 ms 0 KB -