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답안 #1109021

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1109021 2024-11-05T19:02:50 Z doducanh 공장들 (JOI14_factories) C++14
100 / 100
 3233 ms 355500 KB 
///breaker
#include<bits/stdc++.h>
#include "factories.h"
using namespace std;
#define ll long long
#define fi first
#define se second
#define ii pair<int,int>
#define mp make_pair
#define in(x) freopen(x,"r",stdin)
#define out(x) freopen(x,"w",stdout)
#define bit(x,i) ((x>>i)&1)
#define lc (id<<1)
#define rc ((id<<1)^1)
const int maxn=5e5+7;
const ll inf=1e18+7;
vector<pair<int,ll>>adj[maxn];
int sz[maxn];
bool used[maxn];
int p[25][maxn];
ll minn[maxn];
int h[maxn];
vector<pair<int,ll>>ancestors[maxn];
int dfs(int u,int par)
{
    sz[u]=1;
    for(ii pp:adj[u]){
        int v=pp.fi;
        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(ii pp:adj[u]){
        int v=pp.fi;
        int w=pp.se;
        if(v==par||used[v])continue;
        dfs2(v,u,cen,depth+w);
    }
}
int getcen(int u,int par,int treesize)
{
    for(ii 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));
    used[C]=1;
    dfs2(C,-1,C,0);
    for(ii pp:adj[C]){
        int v=pp.fi;
        if(v==par||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({B[i],D[i]});
        adj[B[i]].push_back({A[i],D[i]});
    }
    buildcen(0,-1);
    for(int i=0;i<N;i++){
        minn[i]=inf;
    }
}
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;
}
/* stuff you should look for
 * int overflow, array bounds
 * special cases (n=1?)
 * do smth instead of nothing and stay organized
 * WRITE STUFF DOWN
 * DON'T GET STUCK ON ONE APPROACH
 */

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 47696 KB Output is correct
2 Correct 194 ms 52948 KB Output is correct
3 Correct 214 ms 53432 KB Output is correct
4 Correct 200 ms 53320 KB Output is correct
5 Correct 222 ms 53832 KB Output is correct
6 Correct 144 ms 52296 KB Output is correct
7 Correct 206 ms 53320 KB Output is correct
8 Correct 215 ms 53320 KB Output is correct
9 Correct 236 ms 53836 KB Output is correct
10 Correct 141 ms 52360 KB Output is correct
11 Correct 219 ms 53428 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 47708 KB Output is correct
2 Correct 1343 ms 209992 KB Output is correct
3 Correct 2060 ms 281740 KB Output is correct
4 Correct 499 ms 104360 KB Output is correct
5 Correct 2558 ms 355500 KB Output is correct
6 Correct 2247 ms 281348 KB Output is correct
7 Correct 536 ms 85832 KB Output is correct
8 Correct 240 ms 62504 KB Output is correct
9 Correct 612 ms 99000 KB Output is correct
10 Correct 580 ms 86344 KB Output is correct

Subtask #3
67.0 / 67.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 47696 KB Output is correct
2 Correct 194 ms 52948 KB Output is correct
3 Correct 214 ms 53432 KB Output is correct
4 Correct 200 ms 53320 KB Output is correct
5 Correct 222 ms 53832 KB Output is correct
6 Correct 144 ms 52296 KB Output is correct
7 Correct 206 ms 53320 KB Output is correct
8 Correct 215 ms 53320 KB Output is correct
9 Correct 236 ms 53836 KB Output is correct
10 Correct 141 ms 52360 KB Output is correct
11 Correct 219 ms 53428 KB Output is correct
12 Correct 10 ms 47708 KB Output is correct
13 Correct 1343 ms 209992 KB Output is correct
14 Correct 2060 ms 281740 KB Output is correct
15 Correct 499 ms 104360 KB Output is correct
16 Correct 2558 ms 355500 KB Output is correct
17 Correct 2247 ms 281348 KB Output is correct
18 Correct 536 ms 85832 KB Output is correct
19 Correct 240 ms 62504 KB Output is correct
20 Correct 612 ms 99000 KB Output is correct
21 Correct 580 ms 86344 KB Output is correct
22 Correct 1665 ms 207016 KB Output is correct
23 Correct 1728 ms 210384 KB Output is correct
24 Correct 2554 ms 279668 KB Output is correct
25 Correct 2667 ms 281976 KB Output is correct
26 Correct 2569 ms 281156 KB Output is correct
27 Correct 3233 ms 352172 KB Output is correct
28 Correct 602 ms 104616 KB Output is correct
29 Correct 2613 ms 280208 KB Output is correct
30 Correct 2482 ms 280244 KB Output is correct
31 Correct 2321 ms 280264 KB Output is correct
32 Correct 635 ms 99248 KB Output is correct
33 Correct 214 ms 62648 KB Output is correct
34 Correct 387 ms 79432 KB Output is correct
35 Correct 360 ms 80192 KB Output is correct
36 Correct 476 ms 85164 KB Output is correct
37 Correct 568 ms 85320 KB Output is correct