oj.uz

Submission #1109020

# Submission time Handle Problem Language Result Execution time Memory
1109020 2024-11-05T19:00:27 Z doducanh Factories (JOI14_factories) C++14
100 / 100
 3303 ms 351984 KB 
///breaker
#pragma GCC optimize("O2")
#include <bits/stdc++.h>
//#include "factories.h"
using namespace std;
#define ll long long
#define fi first
#define se second
const ll maxn = 5e5 + 7;
const ll inf = 1e18+7;
ll minn[maxn];
int sz[maxn];
bool used[maxn];
vector<pair<int, ll>>adj[maxn], ancestors[maxn];
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 buildcen(int u,int par)
{
    int C=getcen(u,-1,dfs(u,-1));
    dfs2(C,-1,C,0);
    used[C]=1;
    for(pair<int,ll> pp:adj[C]){
        int v=pp.fi;
        if(used[v])continue;
        buildcen(v,C);
    }
}
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]));
    }
    buildcen(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 11 ms 45648 KB Output is correct
2 Correct 203 ms 50760 KB Output is correct
3 Correct 206 ms 51276 KB Output is correct
4 Correct 219 ms 51372 KB Output is correct
5 Correct 247 ms 51784 KB Output is correct
6 Correct 161 ms 50356 KB Output is correct
7 Correct 205 ms 51376 KB Output is correct
8 Correct 224 ms 51376 KB Output is correct
9 Correct 235 ms 51788 KB Output is correct
10 Correct 148 ms 50352 KB Output is correct
11 Correct 210 ms 51344 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 45648 KB Output is correct
2 Correct 1641 ms 206772 KB Output is correct
3 Correct 2373 ms 278344 KB Output is correct
4 Correct 537 ms 100784 KB Output is correct
5 Correct 2926 ms 351984 KB Output is correct
6 Correct 2371 ms 277500 KB Output is correct
7 Correct 589 ms 86600 KB Output is correct
8 Correct 250 ms 64516 KB Output is correct
9 Correct 607 ms 96944 KB Output is correct
10 Correct 592 ms 85424 KB Output is correct

Subtask #3
67.0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 45648 KB Output is correct
2 Correct 203 ms 50760 KB Output is correct
3 Correct 206 ms 51276 KB Output is correct
4 Correct 219 ms 51372 KB Output is correct
5 Correct 247 ms 51784 KB Output is correct
6 Correct 161 ms 50356 KB Output is correct
7 Correct 205 ms 51376 KB Output is correct
8 Correct 224 ms 51376 KB Output is correct
9 Correct 235 ms 51788 KB Output is correct
10 Correct 148 ms 50352 KB Output is correct
11 Correct 210 ms 51344 KB Output is correct
12 Correct 8 ms 45648 KB Output is correct
13 Correct 1641 ms 206772 KB Output is correct
14 Correct 2373 ms 278344 KB Output is correct
15 Correct 537 ms 100784 KB Output is correct
16 Correct 2926 ms 351984 KB Output is correct
17 Correct 2371 ms 277500 KB Output is correct
18 Correct 589 ms 86600 KB Output is correct
19 Correct 250 ms 64516 KB Output is correct
20 Correct 607 ms 96944 KB Output is correct
21 Correct 592 ms 85424 KB Output is correct
22 Correct 1796 ms 203288 KB Output is correct
23 Correct 1813 ms 210088 KB Output is correct
24 Correct 2606 ms 275956 KB Output is correct
25 Correct 3015 ms 278224 KB Output is correct
26 Correct 2872 ms 277316 KB Output is correct
27 Correct 3303 ms 348504 KB Output is correct
28 Correct 664 ms 100784 KB Output is correct
29 Correct 2559 ms 276304 KB Output is correct
30 Correct 2547 ms 276620 KB Output is correct
31 Correct 2590 ms 276604 KB Output is correct
32 Correct 606 ms 97208 KB Output is correct
33 Correct 213 ms 60612 KB Output is correct
34 Correct 413 ms 77232 KB Output is correct
35 Correct 439 ms 78152 KB Output is correct
36 Correct 534 ms 83016 KB Output is correct
37 Correct 512 ms 83116 KB Output is correct