oj.uz

Submission #1109010

# Submission time Handle Problem Language Result Execution time Memory
1109010 2024-11-05T18:49:24 Z doducanh Factories (JOI14_factories) C++14
100 / 100
 3591 ms 353324 KB 
#include <bits/stdc++.h>
//#include "factories.h"
using namespace std;
#define ll long long
#define fi first
#define se second
const ll MOD = 1e9 + 7;
const ll N = 5e5 + 2;
const ll inf = 1e14 + 2;

vector<ll> minn(N);
vector<int> sz(N), used(N, 0);
vector<vector<pair<int, ll>>> adj(N), ancestors(N);

int n;
int dfs(int u,int par)
{
    sz[u]=1;
    for(pair<int,ll>pp:adj[u]){
        int v=pp.fi;
        int w=pp.se;
        if(v==par||used[v])continue;
        sz[u]+=dfs(v,u);
    }
    return sz[u];
}
void dfs2(int u,int par,int cen,ll depth)
{
    ancestors[u].push_back({cen,depth});
    for(pair<int,ll> pp:adj[u]){
        int v=pp.fi;
        ll w=pp.se;
        if(v==par||used[v])continue;
        dfs2(v,u,cen,depth+w);
    }
}
int getcen(int u,int par,int treesize)
{
    for(pair<int,ll> pp:adj[u]){
        int v=pp.fi;
        if(v==par||used[v])continue;
        if((sz[v]<<1)>treesize)return getcen(v,u,treesize);
    }
    return u;
}
void find_cent(int node, int parent, int size) {
    for (auto child : adj[node]) {
        if (child.first == parent || used[child.first]) continue;
        if (sz[child.first] * 2 > size) {
            find_cent(child.first, node, size);
            return;
        }
    }
    dfs2(node, -1, node, 0);
    used[node] = 1;
    for (auto child :adj[node]) {
        if (used[child.first]) continue;
        find_cent(child.first, node,dfs(child.fi,node));
    }
}
void Init(int N, int A[], int B[], int D[]) {
    for (int i = 0; i < N-1; i++) {
        adj[A[i]].push_back(make_pair(B[i], D[i]));
        adj[B[i]].push_back(make_pair(A[i], D[i]));
    }
    find_cent(0, -1,dfs(0,-1));
}
long long Query(int S, int X[], int T, int Y[])
{
    for(int i=0;i<T;i++){
        for(pair<int,long long> y:ancestors[Y[i]]){
            minn[y.fi]=inf;
        }
    }
    for(int i=0;i<S;i++){
        for(pair<int,ll> y:ancestors[X[i]]){
            minn[y.fi]=min(minn[y.fi],y.se);
        }
    }
    ll ans=inf;
    for(int i=0;i<T;i++){
        for(pair<int,ll> y:ancestors[Y[i]]){
            ans=min(ans,minn[y.fi]+y.se);
        }
    }
    return ans;
}

Compilation message

factories.cpp: In function 'int dfs(int, int)':
factories.cpp:21:13: warning: unused variable 'w' [-Wunused-variable]
   21 |         int w=pp.se;
      |             ^

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 48208 KB Output is correct
2 Correct 204 ms 53288 KB Output is correct
3 Correct 218 ms 53804 KB Output is correct
4 Correct 202 ms 55880 KB Output is correct
5 Correct 232 ms 54088 KB Output is correct
6 Correct 176 ms 52808 KB Output is correct
7 Correct 203 ms 53832 KB Output is correct
8 Correct 221 ms 53844 KB Output is correct
9 Correct 241 ms 54704 KB Output is correct
10 Correct 143 ms 52808 KB Output is correct
11 Correct 214 ms 53832 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 48224 KB Output is correct
2 Correct 1570 ms 207692 KB Output is correct
3 Correct 2113 ms 279552 KB Output is correct
4 Correct 501 ms 102312 KB Output is correct
5 Correct 3020 ms 353324 KB Output is correct
6 Correct 2507 ms 279112 KB Output is correct
7 Correct 554 ms 86472 KB Output is correct
8 Correct 249 ms 63124 KB Output is correct
9 Correct 618 ms 99656 KB Output is correct
10 Correct 487 ms 86872 KB Output is correct

Subtask #3
67.0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 48208 KB Output is correct
2 Correct 204 ms 53288 KB Output is correct
3 Correct 218 ms 53804 KB Output is correct
4 Correct 202 ms 55880 KB Output is correct
5 Correct 232 ms 54088 KB Output is correct
6 Correct 176 ms 52808 KB Output is correct
7 Correct 203 ms 53832 KB Output is correct
8 Correct 221 ms 53844 KB Output is correct
9 Correct 241 ms 54704 KB Output is correct
10 Correct 143 ms 52808 KB Output is correct
11 Correct 214 ms 53832 KB Output is correct
12 Correct 13 ms 48224 KB Output is correct
13 Correct 1570 ms 207692 KB Output is correct
14 Correct 2113 ms 279552 KB Output is correct
15 Correct 501 ms 102312 KB Output is correct
16 Correct 3020 ms 353324 KB Output is correct
17 Correct 2507 ms 279112 KB Output is correct
18 Correct 554 ms 86472 KB Output is correct
19 Correct 249 ms 63124 KB Output is correct
20 Correct 618 ms 99656 KB Output is correct
21 Correct 487 ms 86872 KB Output is correct
22 Correct 1708 ms 204804 KB Output is correct
23 Correct 1878 ms 208036 KB Output is correct
24 Correct 3591 ms 277296 KB Output is correct
25 Correct 3164 ms 279668 KB Output is correct
26 Correct 2771 ms 278700 KB Output is correct
27 Correct 3435 ms 349768 KB Output is correct
28 Correct 686 ms 102312 KB Output is correct
29 Correct 2672 ms 277848 KB Output is correct
30 Correct 2599 ms 278088 KB Output is correct
31 Correct 2610 ms 277892 KB Output is correct
32 Correct 674 ms 99656 KB Output is correct
33 Correct 236 ms 63164 KB Output is correct
34 Correct 405 ms 79688 KB Output is correct
35 Correct 388 ms 80696 KB Output is correct
36 Correct 535 ms 85604 KB Output is correct
37 Correct 588 ms 85596 KB Output is correct