oj.uz

답안 #944046

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
944046 2024-03-12T07:30:13 Z vjudge1 Dynamic Diameter (CEOI19_diameter) C++17
31 / 100
 5000 ms 17356 KB 
#include <bits/stdc++.h>
#define int long long
#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(),x.end()
using namespace std;
const int N=1e5+5;
vector <pair <int,int> > g[N];
int a[N],b[N],c[N],d[N];
void dfs(int v,int p){
    for(auto to : g[v]){
        if(to.ff!=p){
            d[to.ff]=d[v]+c[to.ss];
            dfs(to.ff,v);
        }
    }
}
signed main(){
    ios_base::sync_with_stdio();
    cin.tie(0);cout.tie(0);
    int n,q,w;
    cin>>n>>q>>w;
    int cnt=0;
    multiset <int> ms;
    for(int i=0;i<n-1;i++){
        cin>>a[i]>>b[i]>>c[i];
        g[a[i]].pb({b[i],i});
        g[b[i]].pb({a[i],i});
        if(1==a[i] or b[i]==1)cnt++;
        ms.insert(c[i]);
    }
    bool sbtsk3=0;
    if(cnt==n-1)sbtsk3=1;
    int last=0;
    for(int i=0;i<q;i++){
        int ind,val;
        cin>>ind>>val;
        ind=(ind+last)%(n-1);
        val=(val+last)%w;
        ms.erase(ms.find(c[ind]));
        ms.insert(val);
        c[ind]=val;
        if(sbtsk3){
            int ans=*ms.rbegin();
            if(ms.size()>=2){
                ms.erase(ms.find(ans));
                int x=*ms.rbegin();
                ms.insert(ans);
                ans+=x;
            }
            cout<<ans<<"\n";
            last=ans;
        }
        else{
            for(int i=1;i<=n;i++)d[i]=0;
            dfs(1,0);
            int root=1,mx=0;
            for(int i=1;i<=n;i++){
                if(mx<d[i]){
                    mx=d[i];root=i;
                }
            }
            for(int i=1;i<=n;i++)d[i]=0;
            dfs(root,0);
            mx=0;
            for(int i=1;i<=n;i++)mx=max(mx,d[i]);
            last=mx;
            cout<<mx<<"\n";
        }
        
    }
}
/*
 
 */

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5720 KB Output is correct
2 Correct 1 ms 5724 KB Output is correct
3 Correct 1 ms 5724 KB Output is correct
4 Correct 2 ms 5720 KB Output is correct
5 Correct 1 ms 5724 KB Output is correct
6 Correct 1 ms 5724 KB Output is correct
7 Correct 2 ms 5724 KB Output is correct
8 Correct 2 ms 5724 KB Output is correct
9 Correct 1 ms 5724 KB Output is correct
10 Correct 1 ms 5724 KB Output is correct
11 Correct 2 ms 5724 KB Output is correct
12 Correct 2 ms 5724 KB Output is correct
13 Correct 2 ms 5980 KB Output is correct
14 Correct 2 ms 5740 KB Output is correct
15 Correct 2 ms 5724 KB Output is correct
16 Correct 2 ms 5724 KB Output is correct
17 Correct 2 ms 5724 KB Output is correct
18 Correct 2 ms 5724 KB Output is correct

Subtask #2
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5720 KB Output is correct
2 Correct 1 ms 5724 KB Output is correct
3 Correct 1 ms 5724 KB Output is correct
4 Correct 2 ms 5720 KB Output is correct
5 Correct 1 ms 5724 KB Output is correct
6 Correct 1 ms 5724 KB Output is correct
7 Correct 2 ms 5724 KB Output is correct
8 Correct 2 ms 5724 KB Output is correct
9 Correct 1 ms 5724 KB Output is correct
10 Correct 1 ms 5724 KB Output is correct
11 Correct 2 ms 5724 KB Output is correct
12 Correct 2 ms 5724 KB Output is correct
13 Correct 2 ms 5980 KB Output is correct
14 Correct 2 ms 5740 KB Output is correct
15 Correct 2 ms 5724 KB Output is correct
16 Correct 2 ms 5724 KB Output is correct
17 Correct 2 ms 5724 KB Output is correct
18 Correct 2 ms 5724 KB Output is correct
19 Correct 72 ms 5724 KB Output is correct
20 Correct 80 ms 5908 KB Output is correct
21 Correct 88 ms 5908 KB Output is correct
22 Correct 123 ms 5980 KB Output is correct
23 Correct 929 ms 6404 KB Output is correct
24 Correct 1098 ms 6416 KB Output is correct
25 Correct 1190 ms 6464 KB Output is correct
26 Correct 1385 ms 6996 KB Output is correct

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5724 KB Output is correct
2 Correct 2 ms 5724 KB Output is correct
3 Correct 3 ms 5724 KB Output is correct
4 Correct 11 ms 5724 KB Output is correct
5 Correct 53 ms 6720 KB Output is correct
6 Correct 2 ms 5724 KB Output is correct
7 Correct 2 ms 5724 KB Output is correct
8 Correct 2 ms 5724 KB Output is correct
9 Correct 3 ms 5724 KB Output is correct
10 Correct 13 ms 6012 KB Output is correct
11 Correct 60 ms 6992 KB Output is correct
12 Correct 5 ms 6232 KB Output is correct
13 Correct 5 ms 6236 KB Output is correct
14 Correct 6 ms 6232 KB Output is correct
15 Correct 17 ms 6460 KB Output is correct
16 Correct 69 ms 7352 KB Output is correct
17 Correct 77 ms 16324 KB Output is correct
18 Correct 78 ms 16280 KB Output is correct
19 Correct 85 ms 16320 KB Output is correct
20 Correct 93 ms 16208 KB Output is correct
21 Correct 187 ms 17112 KB Output is correct

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 5724 KB Output is correct
2 Correct 123 ms 5972 KB Output is correct
3 Correct 626 ms 6652 KB Output is correct
4 Correct 1223 ms 7148 KB Output is correct
5 Correct 129 ms 6964 KB Output is correct
6 Correct 1275 ms 7312 KB Output is correct
7 Execution timed out 5011 ms 7988 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #5
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 5031 ms 17356 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5720 KB Output is correct
2 Correct 1 ms 5724 KB Output is correct
3 Correct 1 ms 5724 KB Output is correct
4 Correct 2 ms 5720 KB Output is correct
5 Correct 1 ms 5724 KB Output is correct
6 Correct 1 ms 5724 KB Output is correct
7 Correct 2 ms 5724 KB Output is correct
8 Correct 2 ms 5724 KB Output is correct
9 Correct 1 ms 5724 KB Output is correct
10 Correct 1 ms 5724 KB Output is correct
11 Correct 2 ms 5724 KB Output is correct
12 Correct 2 ms 5724 KB Output is correct
13 Correct 2 ms 5980 KB Output is correct
14 Correct 2 ms 5740 KB Output is correct
15 Correct 2 ms 5724 KB Output is correct
16 Correct 2 ms 5724 KB Output is correct
17 Correct 2 ms 5724 KB Output is correct
18 Correct 2 ms 5724 KB Output is correct
19 Correct 72 ms 5724 KB Output is correct
20 Correct 80 ms 5908 KB Output is correct
21 Correct 88 ms 5908 KB Output is correct
22 Correct 123 ms 5980 KB Output is correct
23 Correct 929 ms 6404 KB Output is correct
24 Correct 1098 ms 6416 KB Output is correct
25 Correct 1190 ms 6464 KB Output is correct
26 Correct 1385 ms 6996 KB Output is correct
27 Correct 2 ms 5724 KB Output is correct
28 Correct 2 ms 5724 KB Output is correct
29 Correct 3 ms 5724 KB Output is correct
30 Correct 11 ms 5724 KB Output is correct
31 Correct 53 ms 6720 KB Output is correct
32 Correct 2 ms 5724 KB Output is correct
33 Correct 2 ms 5724 KB Output is correct
34 Correct 2 ms 5724 KB Output is correct
35 Correct 3 ms 5724 KB Output is correct
36 Correct 13 ms 6012 KB Output is correct
37 Correct 60 ms 6992 KB Output is correct
38 Correct 5 ms 6232 KB Output is correct
39 Correct 5 ms 6236 KB Output is correct
40 Correct 6 ms 6232 KB Output is correct
41 Correct 17 ms 6460 KB Output is correct
42 Correct 69 ms 7352 KB Output is correct
43 Correct 77 ms 16324 KB Output is correct
44 Correct 78 ms 16280 KB Output is correct
45 Correct 85 ms 16320 KB Output is correct
46 Correct 93 ms 16208 KB Output is correct
47 Correct 187 ms 17112 KB Output is correct
48 Correct 14 ms 5724 KB Output is correct
49 Correct 123 ms 5972 KB Output is correct
50 Correct 626 ms 6652 KB Output is correct
51 Correct 1223 ms 7148 KB Output is correct
52 Correct 129 ms 6964 KB Output is correct
53 Correct 1275 ms 7312 KB Output is correct
54 Execution timed out 5011 ms 7988 KB Time limit exceeded
55 Halted 0 ms 0 KB -