oj.uz

Submission #885281

# Submission time Handle Problem Language Result Execution time Memory
885281 2023-12-09T12:00:53 Z Ahmed57 Jail (JOI22_jail) C++17
49 / 100
 361 ms 312524 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<=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]){
                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]){
                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 = 16;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 =16;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 13 ms 59740 KB Output is correct
2 Correct 12 ms 59740 KB Output is correct
3 Correct 13 ms 59896 KB Output is correct
4 Correct 45 ms 59992 KB Output is correct
5 Correct 85 ms 60112 KB Output is correct
6 Correct 16 ms 60248 KB Output is correct
7 Correct 16 ms 60288 KB Output is correct
8 Correct 17 ms 60252 KB Output is correct
9 Correct 182 ms 68812 KB Output is correct
10 Runtime error 346 ms 312524 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 59740 KB Output is correct
2 Correct 12 ms 59888 KB Output is correct
3 Correct 16 ms 60288 KB Output is correct
4 Correct 16 ms 60308 KB Output is correct
5 Correct 16 ms 60252 KB Output is correct
6 Correct 16 ms 60252 KB Output is correct
7 Correct 20 ms 60252 KB Output is correct
8 Correct 17 ms 60296 KB Output is correct
9 Correct 17 ms 60140 KB Output is correct
10 Correct 16 ms 60252 KB Output is correct
11 Correct 16 ms 60124 KB Output is correct
12 Correct 14 ms 60252 KB Output is correct
13 Correct 15 ms 60252 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 59740 KB Output is correct
2 Correct 12 ms 59888 KB Output is correct
3 Correct 16 ms 60288 KB Output is correct
4 Correct 16 ms 60308 KB Output is correct
5 Correct 16 ms 60252 KB Output is correct
6 Correct 16 ms 60252 KB Output is correct
7 Correct 20 ms 60252 KB Output is correct
8 Correct 17 ms 60296 KB Output is correct
9 Correct 17 ms 60140 KB Output is correct
10 Correct 16 ms 60252 KB Output is correct
11 Correct 16 ms 60124 KB Output is correct
12 Correct 14 ms 60252 KB Output is correct
13 Correct 15 ms 60252 KB Output is correct
14 Correct 12 ms 60228 KB Output is correct
15 Correct 13 ms 59736 KB Output is correct
16 Correct 16 ms 60160 KB Output is correct
17 Correct 18 ms 60320 KB Output is correct
18 Correct 18 ms 60252 KB Output is correct
19 Correct 12 ms 59740 KB Output is correct
20 Correct 17 ms 60252 KB Output is correct
21 Correct 17 ms 60252 KB Output is correct
22 Correct 16 ms 60508 KB Output is correct
23 Correct 12 ms 59736 KB Output is correct
24 Correct 14 ms 59996 KB Output is correct
25 Correct 17 ms 60188 KB Output is correct
26 Correct 14 ms 60252 KB Output is correct
27 Correct 18 ms 60080 KB Output is correct
28 Correct 13 ms 60004 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 59740 KB Output is correct
2 Correct 12 ms 59888 KB Output is correct
3 Correct 16 ms 60288 KB Output is correct
4 Correct 16 ms 60308 KB Output is correct
5 Correct 16 ms 60252 KB Output is correct
6 Correct 16 ms 60252 KB Output is correct
7 Correct 20 ms 60252 KB Output is correct
8 Correct 17 ms 60296 KB Output is correct
9 Correct 17 ms 60140 KB Output is correct
10 Correct 16 ms 60252 KB Output is correct
11 Correct 16 ms 60124 KB Output is correct
12 Correct 14 ms 60252 KB Output is correct
13 Correct 15 ms 60252 KB Output is correct
14 Correct 12 ms 60228 KB Output is correct
15 Correct 13 ms 59736 KB Output is correct
16 Correct 16 ms 60160 KB Output is correct
17 Correct 18 ms 60320 KB Output is correct
18 Correct 18 ms 60252 KB Output is correct
19 Correct 12 ms 59740 KB Output is correct
20 Correct 17 ms 60252 KB Output is correct
21 Correct 17 ms 60252 KB Output is correct
22 Correct 16 ms 60508 KB Output is correct
23 Correct 12 ms 59736 KB Output is correct
24 Correct 14 ms 59996 KB Output is correct
25 Correct 17 ms 60188 KB Output is correct
26 Correct 14 ms 60252 KB Output is correct
27 Correct 18 ms 60080 KB Output is correct
28 Correct 13 ms 60004 KB Output is correct
29 Correct 17 ms 60292 KB Output is correct
30 Correct 17 ms 60252 KB Output is correct
31 Correct 17 ms 60232 KB Output is correct
32 Correct 17 ms 60252 KB Output is correct
33 Correct 17 ms 60252 KB Output is correct
34 Correct 16 ms 60156 KB Output is correct
35 Correct 17 ms 60248 KB Output is correct
36 Correct 16 ms 60248 KB Output is correct
37 Correct 15 ms 60248 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 59740 KB Output is correct
2 Correct 12 ms 59888 KB Output is correct
3 Correct 16 ms 60288 KB Output is correct
4 Correct 16 ms 60308 KB Output is correct
5 Correct 16 ms 60252 KB Output is correct
6 Correct 16 ms 60252 KB Output is correct
7 Correct 20 ms 60252 KB Output is correct
8 Correct 17 ms 60296 KB Output is correct
9 Correct 17 ms 60140 KB Output is correct
10 Correct 16 ms 60252 KB Output is correct
11 Correct 16 ms 60124 KB Output is correct
12 Correct 14 ms 60252 KB Output is correct
13 Correct 15 ms 60252 KB Output is correct
14 Correct 12 ms 60228 KB Output is correct
15 Correct 13 ms 59736 KB Output is correct
16 Correct 16 ms 60160 KB Output is correct
17 Correct 18 ms 60320 KB Output is correct
18 Correct 18 ms 60252 KB Output is correct
19 Correct 12 ms 59740 KB Output is correct
20 Correct 17 ms 60252 KB Output is correct
21 Correct 17 ms 60252 KB Output is correct
22 Correct 16 ms 60508 KB Output is correct
23 Correct 12 ms 59736 KB Output is correct
24 Correct 14 ms 59996 KB Output is correct
25 Correct 17 ms 60188 KB Output is correct
26 Correct 14 ms 60252 KB Output is correct
27 Correct 18 ms 60080 KB Output is correct
28 Correct 13 ms 60004 KB Output is correct
29 Correct 17 ms 60292 KB Output is correct
30 Correct 17 ms 60252 KB Output is correct
31 Correct 17 ms 60232 KB Output is correct
32 Correct 17 ms 60252 KB Output is correct
33 Correct 17 ms 60252 KB Output is correct
34 Correct 16 ms 60156 KB Output is correct
35 Correct 17 ms 60248 KB Output is correct
36 Correct 16 ms 60248 KB Output is correct
37 Correct 15 ms 60248 KB Output is correct
38 Correct 210 ms 68948 KB Output is correct
39 Runtime error 361 ms 312524 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 59740 KB Output is correct
2 Correct 12 ms 59740 KB Output is correct
3 Correct 13 ms 59740 KB Output is correct
4 Correct 12 ms 59740 KB Output is correct
5 Correct 27 ms 59896 KB Output is correct
6 Correct 14 ms 60252 KB Output is correct
7 Correct 14 ms 60248 KB Output is correct
8 Correct 13 ms 59740 KB Output is correct
9 Correct 13 ms 59980 KB Output is correct
10 Correct 12 ms 59996 KB Output is correct
11 Correct 12 ms 59912 KB Output is correct
12 Correct 15 ms 60140 KB Output is correct
13 Correct 62 ms 59996 KB Output is correct
14 Correct 104 ms 59992 KB Output is correct
15 Correct 81 ms 59996 KB Output is correct
16 Runtime error 306 ms 304616 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 13 ms 59740 KB Output is correct
2 Correct 12 ms 59740 KB Output is correct
3 Correct 13 ms 59896 KB Output is correct
4 Correct 45 ms 59992 KB Output is correct
5 Correct 85 ms 60112 KB Output is correct
6 Correct 16 ms 60248 KB Output is correct
7 Correct 16 ms 60288 KB Output is correct
8 Correct 17 ms 60252 KB Output is correct
9 Correct 182 ms 68812 KB Output is correct
10 Runtime error 346 ms 312524 KB Execution killed with signal 11
11 Halted 0 ms 0 KB -