oj.uz

Submission #885282

# Submission time Handle Problem Language Result Execution time Memory
885282 2023-12-09T12:02:11 Z Ahmed57 Jail (JOI22_jail) C++17
49 / 100
 411 ms 312424 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];
    int deg[120005+120000*17] = {0};
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<=log2(n);j++){
            lola[i][j] = ++NODES;
            lolb[i][j] = ++NODES;
        }
    }
    for(int i = 1;i<=n;i++){
        for(int j = 1;j<=log2(n);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 =log2(n);j>=0;j--){
            if(dep[x]-(1<<j)>=dep[y]){
                tree[lolc[i]].push_back(lolb[x][j]);
                x = P[x][j];
            }
        }
        for(int j = log2(n);j>=0;j--){
            if(P[x][j]!=P[y][j]){
                tree[lolc[i]].push_back(lolb[x][j]);
                tree[lolc[i]].push_back(lolb[y][j]);
                x = P[x][j];y = P[y][j];
            }
        }
        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 = log2(n);j>=0;j--){
            if(dep[x]-(1<<j)>=dep[y]){
                tree[lola[x][j]].push_back(lolc[i]);
                x = P[x][j];
            }
        }
        for(int j =log2(n);j>=0;j--){
            if(P[x][j]!=P[y][j]){
                tree[lola[x][j]].push_back(lolc[i]);
                tree[lola[y][j]].push_back(lolc[i]);
                x = P[x][j];y = P[y][j];
            }
        }
        tree[lola[x][0]].push_back(lolc[i]);
        if(x!=y){tree[lola[y][1]].push_back(lolc[i]);}
    }
    //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();
        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();deg[i] = 0;}
}
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 59736 KB Output is correct
2 Correct 12 ms 59740 KB Output is correct
3 Correct 12 ms 59972 KB Output is correct
4 Correct 38 ms 59992 KB Output is correct
5 Correct 66 ms 59996 KB Output is correct
6 Correct 15 ms 60112 KB Output is correct
7 Correct 15 ms 59996 KB Output is correct
8 Correct 16 ms 60136 KB Output is correct
9 Correct 144 ms 67380 KB Output is correct
10 Runtime error 411 ms 312336 KB Execution killed with signal 11
11 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 59736 KB Output is correct
2 Correct 12 ms 59740 KB Output is correct
3 Correct 15 ms 59996 KB Output is correct
4 Correct 16 ms 59996 KB Output is correct
5 Correct 16 ms 59996 KB Output is correct
6 Correct 16 ms 59932 KB Output is correct
7 Correct 15 ms 59996 KB Output is correct
8 Correct 15 ms 59996 KB Output is correct
9 Correct 16 ms 59996 KB Output is correct
10 Correct 16 ms 59996 KB Output is correct
11 Correct 15 ms 60140 KB Output is correct
12 Correct 15 ms 60252 KB Output is correct
13 Correct 13 ms 59996 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 59736 KB Output is correct
2 Correct 12 ms 59740 KB Output is correct
3 Correct 15 ms 59996 KB Output is correct
4 Correct 16 ms 59996 KB Output is correct
5 Correct 16 ms 59996 KB Output is correct
6 Correct 16 ms 59932 KB Output is correct
7 Correct 15 ms 59996 KB Output is correct
8 Correct 15 ms 59996 KB Output is correct
9 Correct 16 ms 59996 KB Output is correct
10 Correct 16 ms 59996 KB Output is correct
11 Correct 15 ms 60140 KB Output is correct
12 Correct 15 ms 60252 KB Output is correct
13 Correct 13 ms 59996 KB Output is correct
14 Correct 12 ms 59736 KB Output is correct
15 Correct 12 ms 59740 KB Output is correct
16 Correct 18 ms 60116 KB Output is correct
17 Correct 16 ms 59992 KB Output is correct
18 Correct 16 ms 59996 KB Output is correct
19 Correct 12 ms 59736 KB Output is correct
20 Correct 16 ms 60136 KB Output is correct
21 Correct 17 ms 60112 KB Output is correct
22 Correct 15 ms 59996 KB Output is correct
23 Correct 12 ms 59740 KB Output is correct
24 Correct 13 ms 60004 KB Output is correct
25 Correct 16 ms 59924 KB Output is correct
26 Correct 13 ms 59992 KB Output is correct
27 Correct 15 ms 59920 KB Output is correct
28 Correct 12 ms 59832 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 59736 KB Output is correct
2 Correct 12 ms 59740 KB Output is correct
3 Correct 15 ms 59996 KB Output is correct
4 Correct 16 ms 59996 KB Output is correct
5 Correct 16 ms 59996 KB Output is correct
6 Correct 16 ms 59932 KB Output is correct
7 Correct 15 ms 59996 KB Output is correct
8 Correct 15 ms 59996 KB Output is correct
9 Correct 16 ms 59996 KB Output is correct
10 Correct 16 ms 59996 KB Output is correct
11 Correct 15 ms 60140 KB Output is correct
12 Correct 15 ms 60252 KB Output is correct
13 Correct 13 ms 59996 KB Output is correct
14 Correct 12 ms 59736 KB Output is correct
15 Correct 12 ms 59740 KB Output is correct
16 Correct 18 ms 60116 KB Output is correct
17 Correct 16 ms 59992 KB Output is correct
18 Correct 16 ms 59996 KB Output is correct
19 Correct 12 ms 59736 KB Output is correct
20 Correct 16 ms 60136 KB Output is correct
21 Correct 17 ms 60112 KB Output is correct
22 Correct 15 ms 59996 KB Output is correct
23 Correct 12 ms 59740 KB Output is correct
24 Correct 13 ms 60004 KB Output is correct
25 Correct 16 ms 59924 KB Output is correct
26 Correct 13 ms 59992 KB Output is correct
27 Correct 15 ms 59920 KB Output is correct
28 Correct 12 ms 59832 KB Output is correct
29 Correct 16 ms 59996 KB Output is correct
30 Correct 17 ms 60176 KB Output is correct
31 Correct 16 ms 59996 KB Output is correct
32 Correct 16 ms 59996 KB Output is correct
33 Correct 18 ms 60132 KB Output is correct
34 Correct 16 ms 60252 KB Output is correct
35 Correct 16 ms 59996 KB Output is correct
36 Correct 15 ms 59996 KB Output is correct
37 Correct 14 ms 59996 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 59736 KB Output is correct
2 Correct 12 ms 59740 KB Output is correct
3 Correct 15 ms 59996 KB Output is correct
4 Correct 16 ms 59996 KB Output is correct
5 Correct 16 ms 59996 KB Output is correct
6 Correct 16 ms 59932 KB Output is correct
7 Correct 15 ms 59996 KB Output is correct
8 Correct 15 ms 59996 KB Output is correct
9 Correct 16 ms 59996 KB Output is correct
10 Correct 16 ms 59996 KB Output is correct
11 Correct 15 ms 60140 KB Output is correct
12 Correct 15 ms 60252 KB Output is correct
13 Correct 13 ms 59996 KB Output is correct
14 Correct 12 ms 59736 KB Output is correct
15 Correct 12 ms 59740 KB Output is correct
16 Correct 18 ms 60116 KB Output is correct
17 Correct 16 ms 59992 KB Output is correct
18 Correct 16 ms 59996 KB Output is correct
19 Correct 12 ms 59736 KB Output is correct
20 Correct 16 ms 60136 KB Output is correct
21 Correct 17 ms 60112 KB Output is correct
22 Correct 15 ms 59996 KB Output is correct
23 Correct 12 ms 59740 KB Output is correct
24 Correct 13 ms 60004 KB Output is correct
25 Correct 16 ms 59924 KB Output is correct
26 Correct 13 ms 59992 KB Output is correct
27 Correct 15 ms 59920 KB Output is correct
28 Correct 12 ms 59832 KB Output is correct
29 Correct 16 ms 59996 KB Output is correct
30 Correct 17 ms 60176 KB Output is correct
31 Correct 16 ms 59996 KB Output is correct
32 Correct 16 ms 59996 KB Output is correct
33 Correct 18 ms 60132 KB Output is correct
34 Correct 16 ms 60252 KB Output is correct
35 Correct 16 ms 59996 KB Output is correct
36 Correct 15 ms 59996 KB Output is correct
37 Correct 14 ms 59996 KB Output is correct
38 Correct 133 ms 67408 KB Output is correct
39 Runtime error 368 ms 312424 KB Execution killed with signal 11
40 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 59904 KB Output is correct
2 Correct 13 ms 59740 KB Output is correct
3 Correct 12 ms 59740 KB Output is correct
4 Correct 12 ms 59740 KB Output is correct
5 Correct 22 ms 59740 KB Output is correct
6 Correct 16 ms 59996 KB Output is correct
7 Correct 15 ms 59996 KB Output is correct
8 Correct 13 ms 59996 KB Output is correct
9 Correct 12 ms 59740 KB Output is correct
10 Correct 12 ms 60044 KB Output is correct
11 Correct 12 ms 59992 KB Output is correct
12 Correct 15 ms 59992 KB Output is correct
13 Correct 50 ms 60076 KB Output is correct
14 Correct 83 ms 60048 KB Output is correct
15 Correct 65 ms 59992 KB Output is correct
16 Runtime error 356 ms 306348 KB Execution killed with signal 6
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 59736 KB Output is correct
2 Correct 12 ms 59740 KB Output is correct
3 Correct 12 ms 59972 KB Output is correct
4 Correct 38 ms 59992 KB Output is correct
5 Correct 66 ms 59996 KB Output is correct
6 Correct 15 ms 60112 KB Output is correct
7 Correct 15 ms 59996 KB Output is correct
8 Correct 16 ms 60136 KB Output is correct
9 Correct 144 ms 67380 KB Output is correct
10 Runtime error 411 ms 312336 KB Execution killed with signal 11
11 Halted 0 ms 0 KB -