oj.uz

답안 #885275

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
885275 2023-12-09T11:55:51 Z Ahmed57 Jail (JOI22_jail) C++17
49 / 100
 334 ms 313840 KB 
#include <bits/stdc++.h>
 
using namespace std;
int P[120001][17];
int lola[120001][17];
int lolb[120001][17];
int lolc[120001],dep[120001];
vector<int> adj[120001],tree[120005+120000*17];
void dfs(int i,int pr){
    P[i][0] = pr;
    dep[i] = dep[pr]+1;
    for(int j = 1;j<17;j++){
        P[i][j] = P[P[i][j-1]][j-1];
    }
    for(auto j:adj[i]){
        if(j==pr)continue;
        dfs(j,i);
    }
}
int go(int x,int len){
    for(int i = 16;i>=0;i--){
        if(len>=(1<<i)){
            x = P[x][i];
            len-=(1<<i);
        }
    }
    return x;
}
signed main(){
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    //freopen("input.txt","r",stdin);
    //freopen("out.txt","w",stdout);
    int t;cin>>t;while(t--){
    int n;
    cin>>n;
    for(int i = 1;i<=n;i++){
        adj[i].clear();
    }
    for(int i = 1;i<n;i++){
        int a,b;
        cin>>a>>b;
        adj[a].push_back(b);
        adj[b].push_back(a);
    }
    int q;cin>>q;
    vector<pair<int,int>> v;v.push_back({0,0});
    for(int i = 1;i<=q;i++){
        int a,b;cin>>a>>b;
        v.push_back({a,b});
    }
    dfs(1,0);
    int NODES = 0;
    for(int i = 1;i<=q;i++){
        lolc[i] = ++NODES;
        //cout<<lolc[i]<<endl;
    }
    for(int i = 1;i<=n;i++){
        for(int j = 0;j<=16;j++){
            lola[i][j] = ++NODES;
            lolb[i][j] = ++NODES;
        }
    }
    for(int i = 1;i<=n;i++){
        for(int j = 1;j<=16;j++){
            tree[lolb[i][j]].push_back(lolb[i][j-1]);
            tree[lolb[i][j]].push_back(lolb[P[i][j-1]][j-1]);
            tree[lola[i][j-1]].push_back(lola[i][j]);
            tree[lola[P[i][j-1]][j-1]].push_back(lola[i][j]);            
        }
    }
    //cout<<tree[0].size()<<endl;
    for(int i = 1;i<=q;i++){
        tree[lolc[i]].push_back(lola[v[i].first][0]);
        tree[lolb[v[i].second][0]].push_back(lolc[i]);
    }
    for(int i = 1;i<=q;i++){
        int x,y;
        x = v[i].first , y = v[i].second;
        if(dep[x]>dep[y]&&go(x,dep[x]-dep[y])==y){
            y=go(x,dep[x]-dep[y]-1);
        }else y = P[y][0];
        //cout<<x<<" "<<y<<endl;
        if(dep[x]<dep[y])swap(x,y);
        for(int j =16;j>=0;j--){
            if(dep[x]-(1<<j)>=dep[y]){
                assert(lolc[i]!=0);
                tree[lolc[i]].push_back(lolb[x][j]);
                x = P[x][j];
            }
        }
        for(int j = 16;j>=0;j--){
            if(P[x][j]!=P[y][j]){
                assert(lolc[i]!=0);
                tree[lolc[i]].push_back(lolb[x][j]);
                tree[lolc[i]].push_back(lolb[y][j]);
                x = P[x][j];y = P[y][j];
            }
        }
        assert(lolc[i]!=0);
        tree[lolc[i]].push_back(lolb[x][0]);
        if(x!=y)tree[lolc[i]].push_back(lolb[y][1]);
        x = v[i].first , y = v[i].second;
        if(dep[y]>dep[x]&&go(y,dep[y]-dep[x])==x){
            x=go(y,dep[y]-dep[x]-1);
        }else x = P[x][0];
        if(dep[x]<dep[y])swap(x,y);
        for(int j = 16;j>=0;j--){
            if(dep[x]-(1<<j)>=dep[y]){
                assert(lola[x][j]!=0);
                tree[lola[x][j]].push_back(lolc[i]);
                x = P[x][j];
            }
        }
        for(int j =16;j>=0;j--){
            if(P[x][j]!=P[y][j]){
                assert(lola[x][j]!=0);
                assert(lola[y][j]!=0);
                tree[lola[x][j]].push_back(lolc[i]);
                tree[lola[y][j]].push_back(lolc[i]);
                x = P[x][j];y = P[y][j];
            }
        }
        assert(lola[x][0]!=0);
        tree[lola[x][0]].push_back(lolc[i]);
        if(x!=y){assert(lola[y][1]!=0);tree[lola[y][1]].push_back(lolc[i]);}
    }
    int deg[NODES+1] = {0};
    int vis[NODES+1] = {0};
    //cout<<"ggg"<<endl;
    tree[0].clear();
    for(int i = 0;i<=NODES;i++){
        for(auto j:tree[i]){
            //if(j>NODES||j==0)assert(0);
            deg[j]++;
        }
    }
    queue<int> qe;
    for(int i = 0;i<=NODES;i++){
        if(deg[i]==0){
            qe.push(i);
        }
    }
    int cnt = 0;
    while(!qe.empty()){
        int x = qe.front();qe.pop();
        if(vis[x]){
            //cout<<x<<endl;
        }
        vis[x] = 1;
        cnt++;
        for(auto j:tree[x]){
            deg[j]--;
            if(deg[j]==0)qe.push(j);
        }
    }
    for(int i = 0;i<=NODES;i++){
        //cout<<vis[i]<<" "<<i<<endl;
    }
    if(cnt==NODES+1)cout<<"Yes\n";
    else cout<<"No\n";
    for(int i = 0;i<=NODES;i++)tree[i].clear();
}
}

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 59996 KB Output is correct
2 Correct 12 ms 60084 KB Output is correct
3 Correct 12 ms 59996 KB Output is correct
4 Correct 48 ms 60552 KB Output is correct
5 Correct 88 ms 61012 KB Output is correct
6 Correct 16 ms 60504 KB Output is correct
7 Correct 17 ms 60508 KB Output is correct
8 Correct 18 ms 60352 KB Output is correct
9 Correct 199 ms 69460 KB Output is correct
10 Runtime error 334 ms 313804 KB Execution killed with signal 11
11 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 60144 KB Output is correct
2 Correct 12 ms 59996 KB Output is correct
3 Correct 16 ms 60508 KB Output is correct
4 Correct 17 ms 60508 KB Output is correct
5 Correct 17 ms 60544 KB Output is correct
6 Correct 17 ms 60508 KB Output is correct
7 Correct 17 ms 60508 KB Output is correct
8 Correct 18 ms 60508 KB Output is correct
9 Correct 17 ms 60504 KB Output is correct
10 Correct 18 ms 60404 KB Output is correct
11 Correct 17 ms 60508 KB Output is correct
12 Correct 15 ms 60500 KB Output is correct
13 Correct 15 ms 60508 KB Output is correct

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 60144 KB Output is correct
2 Correct 12 ms 59996 KB Output is correct
3 Correct 16 ms 60508 KB Output is correct
4 Correct 17 ms 60508 KB Output is correct
5 Correct 17 ms 60544 KB Output is correct
6 Correct 17 ms 60508 KB Output is correct
7 Correct 17 ms 60508 KB Output is correct
8 Correct 18 ms 60508 KB Output is correct
9 Correct 17 ms 60504 KB Output is correct
10 Correct 18 ms 60404 KB Output is correct
11 Correct 17 ms 60508 KB Output is correct
12 Correct 15 ms 60500 KB Output is correct
13 Correct 15 ms 60508 KB Output is correct
14 Correct 13 ms 59996 KB Output is correct
15 Correct 12 ms 60164 KB Output is correct
16 Correct 17 ms 60508 KB Output is correct
17 Correct 17 ms 60556 KB Output is correct
18 Correct 17 ms 60508 KB Output is correct
19 Correct 13 ms 59992 KB Output is correct
20 Correct 18 ms 60508 KB Output is correct
21 Correct 18 ms 60508 KB Output is correct
22 Correct 16 ms 60504 KB Output is correct
23 Correct 12 ms 59992 KB Output is correct
24 Correct 13 ms 60140 KB Output is correct
25 Correct 18 ms 60336 KB Output is correct
26 Correct 14 ms 60248 KB Output is correct
27 Correct 17 ms 60508 KB Output is correct
28 Correct 12 ms 59996 KB Output is correct

Subtask #4
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 60144 KB Output is correct
2 Correct 12 ms 59996 KB Output is correct
3 Correct 16 ms 60508 KB Output is correct
4 Correct 17 ms 60508 KB Output is correct
5 Correct 17 ms 60544 KB Output is correct
6 Correct 17 ms 60508 KB Output is correct
7 Correct 17 ms 60508 KB Output is correct
8 Correct 18 ms 60508 KB Output is correct
9 Correct 17 ms 60504 KB Output is correct
10 Correct 18 ms 60404 KB Output is correct
11 Correct 17 ms 60508 KB Output is correct
12 Correct 15 ms 60500 KB Output is correct
13 Correct 15 ms 60508 KB Output is correct
14 Correct 13 ms 59996 KB Output is correct
15 Correct 12 ms 60164 KB Output is correct
16 Correct 17 ms 60508 KB Output is correct
17 Correct 17 ms 60556 KB Output is correct
18 Correct 17 ms 60508 KB Output is correct
19 Correct 13 ms 59992 KB Output is correct
20 Correct 18 ms 60508 KB Output is correct
21 Correct 18 ms 60508 KB Output is correct
22 Correct 16 ms 60504 KB Output is correct
23 Correct 12 ms 59992 KB Output is correct
24 Correct 13 ms 60140 KB Output is correct
25 Correct 18 ms 60336 KB Output is correct
26 Correct 14 ms 60248 KB Output is correct
27 Correct 17 ms 60508 KB Output is correct
28 Correct 12 ms 59996 KB Output is correct
29 Correct 17 ms 60412 KB Output is correct
30 Correct 18 ms 60508 KB Output is correct
31 Correct 18 ms 60504 KB Output is correct
32 Correct 18 ms 60508 KB Output is correct
33 Correct 17 ms 60508 KB Output is correct
34 Correct 17 ms 60252 KB Output is correct
35 Correct 16 ms 60504 KB Output is correct
36 Correct 16 ms 60508 KB Output is correct
37 Correct 15 ms 60252 KB Output is correct

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 60144 KB Output is correct
2 Correct 12 ms 59996 KB Output is correct
3 Correct 16 ms 60508 KB Output is correct
4 Correct 17 ms 60508 KB Output is correct
5 Correct 17 ms 60544 KB Output is correct
6 Correct 17 ms 60508 KB Output is correct
7 Correct 17 ms 60508 KB Output is correct
8 Correct 18 ms 60508 KB Output is correct
9 Correct 17 ms 60504 KB Output is correct
10 Correct 18 ms 60404 KB Output is correct
11 Correct 17 ms 60508 KB Output is correct
12 Correct 15 ms 60500 KB Output is correct
13 Correct 15 ms 60508 KB Output is correct
14 Correct 13 ms 59996 KB Output is correct
15 Correct 12 ms 60164 KB Output is correct
16 Correct 17 ms 60508 KB Output is correct
17 Correct 17 ms 60556 KB Output is correct
18 Correct 17 ms 60508 KB Output is correct
19 Correct 13 ms 59992 KB Output is correct
20 Correct 18 ms 60508 KB Output is correct
21 Correct 18 ms 60508 KB Output is correct
22 Correct 16 ms 60504 KB Output is correct
23 Correct 12 ms 59992 KB Output is correct
24 Correct 13 ms 60140 KB Output is correct
25 Correct 18 ms 60336 KB Output is correct
26 Correct 14 ms 60248 KB Output is correct
27 Correct 17 ms 60508 KB Output is correct
28 Correct 12 ms 59996 KB Output is correct
29 Correct 17 ms 60412 KB Output is correct
30 Correct 18 ms 60508 KB Output is correct
31 Correct 18 ms 60504 KB Output is correct
32 Correct 18 ms 60508 KB Output is correct
33 Correct 17 ms 60508 KB Output is correct
34 Correct 17 ms 60252 KB Output is correct
35 Correct 16 ms 60504 KB Output is correct
36 Correct 16 ms 60508 KB Output is correct
37 Correct 15 ms 60252 KB Output is correct
38 Correct 204 ms 69712 KB Output is correct
39 Runtime error 331 ms 313840 KB Execution killed with signal 11
40 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 59996 KB Output is correct
2 Correct 13 ms 60248 KB Output is correct
3 Correct 12 ms 60136 KB Output is correct
4 Correct 12 ms 60252 KB Output is correct
5 Correct 27 ms 60252 KB Output is correct
6 Correct 14 ms 60500 KB Output is correct
7 Correct 14 ms 60296 KB Output is correct
8 Correct 13 ms 59996 KB Output is correct
9 Correct 12 ms 59996 KB Output is correct
10 Correct 13 ms 60252 KB Output is correct
11 Correct 14 ms 59996 KB Output is correct
12 Correct 16 ms 60488 KB Output is correct
13 Correct 63 ms 60680 KB Output is correct
14 Correct 111 ms 61228 KB Output is correct
15 Correct 86 ms 60812 KB Output is correct
16 Runtime error 304 ms 305644 KB Execution killed with signal 6
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 59996 KB Output is correct
2 Correct 12 ms 60084 KB Output is correct
3 Correct 12 ms 59996 KB Output is correct
4 Correct 48 ms 60552 KB Output is correct
5 Correct 88 ms 61012 KB Output is correct
6 Correct 16 ms 60504 KB Output is correct
7 Correct 17 ms 60508 KB Output is correct
8 Correct 18 ms 60352 KB Output is correct
9 Correct 199 ms 69460 KB Output is correct
10 Runtime error 334 ms 313804 KB Execution killed with signal 11
11 Halted 0 ms 0 KB -