oj.uz

답안 #1013289

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1013289 2024-07-03T11:23:54 Z Aiperiii Jail (JOI22_jail) C++14
72 / 100
 2184 ms 1048576 KB 
#include <bits/stdc++.h>
#define int long long
#define all(x) x.begin(),x.end()
#define ff first
#define ss second
#define pb push_back
using namespace std;
const int N=12e4+5;
vector <int> g[N],g2[N];
int p[N],d[N],jmp[20][N],cl[N];
void dfs(int v,int par){
    p[v]=par;
    jmp[0][v]=par;
    for(auto to : g[v]){
        if(!p[to]){
            d[to]=d[v]+1;
            dfs(to,v);
        }
    }
}
int lca(int v,int u){
    if(d[v]<d[u])swap(v,u);
    for(int k=19;k>=0;k--){
        if(d[jmp[k][v]]>=d[u]){
            v=jmp[k][v];
        }
    }
    if(u==v)return u;
    for(int k=19;k>=0;k--){
        if(jmp[k][v]!=jmp[k][u]){
            v=jmp[k][v];
            u=jmp[k][u];
        }
    }
    return p[v];
}
bool dfs2(int v){
    cl[v]=1;
    for(auto to : g2[v]){
        if(cl[to]==1)return true;
        if(!cl[to]){
            if(dfs2(to))return true;
        }
    }
    cl[v]=2;
    return false;
}
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    int q;
    cin>>q;
    while(q--){
        int n;
        cin>>n;
        for(int i=0;i<n-1;i++){
            int u,v;
            cin>>u>>v;
            g[u].pb(v);
            g[v].pb(u);
        }
        int m;
        cin>>m;
        vector <int> s(m+1),t(m+1),st(n+1),ed(n+1);
        for(int i=1;i<=m;i++){
            cin>>s[i]>>t[i];
            st[s[i]]=i;
            ed[t[i]]=i;
        }
        dfs(1,1);
        for(int k=1;k<20;k++){
            for(int i=1;i<=n;i++){
                jmp[k][i]=jmp[k-1][jmp[k-1][i]];
            }
        }
        for(int i=1;i<=m;i++){
            int l=lca(s[i],t[i]);
            int x=s[i];
            while(x!=l){
                if(st[x] && i!=st[x]){
                    g2[st[x]].pb(i);
                }
                if(ed[x] && i!=ed[x]){
                    g2[i].pb(ed[x]);
                }
                x=p[x];
            }
            x=t[i];
            while(x!=l){
                if(st[x] && i!=st[x]){
                    g2[st[x]].pb(i);
                }
                if(ed[x] && i!=ed[x]){
                    g2[i].pb(ed[x]);
                }
                x=p[x];
            }
            if(st[l] && st[l]!=i){
                g2[st[l]].pb(i);
            }
            if(ed[l] && ed[l]!=i){
                g2[i].pb(ed[l]);
            }
        }
        bool ok=1;
        for(int i=1;i<=m;i++){
            if(!cl[i]){
                if(dfs2(i))ok=0;
            }
        }
        if(ok)cout<<"Yes\n";
        else cout<<"No\n";
        for(int i=1;i<=n;i++){
            g[i].clear();
            g2[i].clear();
            p[i]=0;d[i]=0;cl[i]=0;
            for(int k=0;k<20;k++)jmp[k][i]=0;
        }
    }
}



/*
1
8
1 2
2 3
3 4
4 5
5 6
6 7
7 8
2
3 4
4 8
 */

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 27484 KB Output is correct
2 Correct 3 ms 27484 KB Output is correct
3 Correct 3 ms 27508 KB Output is correct
4 Correct 9 ms 27880 KB Output is correct
5 Correct 17 ms 28268 KB Output is correct
6 Correct 3 ms 27484 KB Output is correct
7 Correct 4 ms 27484 KB Output is correct
8 Correct 5 ms 27740 KB Output is correct
9 Correct 50 ms 33144 KB Output is correct
10 Correct 120 ms 43092 KB Output is correct
11 Correct 7 ms 27484 KB Output is correct
12 Correct 25 ms 28716 KB Output is correct
13 Correct 104 ms 100312 KB Output is correct
14 Correct 133 ms 127996 KB Output is correct
15 Runtime error 2184 ms 1048576 KB Execution killed with signal 9
16 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 27740 KB Output is correct
2 Correct 3 ms 27488 KB Output is correct
3 Correct 4 ms 27496 KB Output is correct
4 Correct 4 ms 27744 KB Output is correct
5 Correct 4 ms 27496 KB Output is correct
6 Correct 4 ms 27492 KB Output is correct
7 Correct 4 ms 27492 KB Output is correct
8 Correct 4 ms 27492 KB Output is correct
9 Correct 4 ms 27492 KB Output is correct
10 Correct 5 ms 27492 KB Output is correct
11 Correct 4 ms 27488 KB Output is correct
12 Correct 3 ms 27484 KB Output is correct
13 Correct 3 ms 27488 KB Output is correct

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 27740 KB Output is correct
2 Correct 3 ms 27488 KB Output is correct
3 Correct 4 ms 27496 KB Output is correct
4 Correct 4 ms 27744 KB Output is correct
5 Correct 4 ms 27496 KB Output is correct
6 Correct 4 ms 27492 KB Output is correct
7 Correct 4 ms 27492 KB Output is correct
8 Correct 4 ms 27492 KB Output is correct
9 Correct 4 ms 27492 KB Output is correct
10 Correct 5 ms 27492 KB Output is correct
11 Correct 4 ms 27488 KB Output is correct
12 Correct 3 ms 27484 KB Output is correct
13 Correct 3 ms 27488 KB Output is correct
14 Correct 3 ms 27480 KB Output is correct
15 Correct 3 ms 27484 KB Output is correct
16 Correct 6 ms 27488 KB Output is correct
17 Correct 4 ms 27496 KB Output is correct
18 Correct 5 ms 27580 KB Output is correct
19 Correct 4 ms 27484 KB Output is correct
20 Correct 4 ms 27480 KB Output is correct
21 Correct 5 ms 27484 KB Output is correct
22 Correct 4 ms 27456 KB Output is correct
23 Correct 3 ms 27488 KB Output is correct
24 Correct 4 ms 27488 KB Output is correct
25 Correct 4 ms 27584 KB Output is correct
26 Correct 3 ms 27484 KB Output is correct
27 Correct 4 ms 27484 KB Output is correct
28 Correct 4 ms 27484 KB Output is correct

Subtask #4
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 27740 KB Output is correct
2 Correct 3 ms 27488 KB Output is correct
3 Correct 4 ms 27496 KB Output is correct
4 Correct 4 ms 27744 KB Output is correct
5 Correct 4 ms 27496 KB Output is correct
6 Correct 4 ms 27492 KB Output is correct
7 Correct 4 ms 27492 KB Output is correct
8 Correct 4 ms 27492 KB Output is correct
9 Correct 4 ms 27492 KB Output is correct
10 Correct 5 ms 27492 KB Output is correct
11 Correct 4 ms 27488 KB Output is correct
12 Correct 3 ms 27484 KB Output is correct
13 Correct 3 ms 27488 KB Output is correct
14 Correct 3 ms 27480 KB Output is correct
15 Correct 3 ms 27484 KB Output is correct
16 Correct 6 ms 27488 KB Output is correct
17 Correct 4 ms 27496 KB Output is correct
18 Correct 5 ms 27580 KB Output is correct
19 Correct 4 ms 27484 KB Output is correct
20 Correct 4 ms 27480 KB Output is correct
21 Correct 5 ms 27484 KB Output is correct
22 Correct 4 ms 27456 KB Output is correct
23 Correct 3 ms 27488 KB Output is correct
24 Correct 4 ms 27488 KB Output is correct
25 Correct 4 ms 27584 KB Output is correct
26 Correct 3 ms 27484 KB Output is correct
27 Correct 4 ms 27484 KB Output is correct
28 Correct 4 ms 27484 KB Output is correct
29 Correct 5 ms 27740 KB Output is correct
30 Correct 4 ms 27484 KB Output is correct
31 Correct 5 ms 27484 KB Output is correct
32 Correct 5 ms 27484 KB Output is correct
33 Correct 4 ms 27552 KB Output is correct
34 Correct 4 ms 27488 KB Output is correct
35 Correct 5 ms 27696 KB Output is correct
36 Correct 4 ms 27484 KB Output is correct
37 Correct 4 ms 27484 KB Output is correct

Subtask #5
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 27740 KB Output is correct
2 Correct 3 ms 27488 KB Output is correct
3 Correct 4 ms 27496 KB Output is correct
4 Correct 4 ms 27744 KB Output is correct
5 Correct 4 ms 27496 KB Output is correct
6 Correct 4 ms 27492 KB Output is correct
7 Correct 4 ms 27492 KB Output is correct
8 Correct 4 ms 27492 KB Output is correct
9 Correct 4 ms 27492 KB Output is correct
10 Correct 5 ms 27492 KB Output is correct
11 Correct 4 ms 27488 KB Output is correct
12 Correct 3 ms 27484 KB Output is correct
13 Correct 3 ms 27488 KB Output is correct
14 Correct 3 ms 27480 KB Output is correct
15 Correct 3 ms 27484 KB Output is correct
16 Correct 6 ms 27488 KB Output is correct
17 Correct 4 ms 27496 KB Output is correct
18 Correct 5 ms 27580 KB Output is correct
19 Correct 4 ms 27484 KB Output is correct
20 Correct 4 ms 27480 KB Output is correct
21 Correct 5 ms 27484 KB Output is correct
22 Correct 4 ms 27456 KB Output is correct
23 Correct 3 ms 27488 KB Output is correct
24 Correct 4 ms 27488 KB Output is correct
25 Correct 4 ms 27584 KB Output is correct
26 Correct 3 ms 27484 KB Output is correct
27 Correct 4 ms 27484 KB Output is correct
28 Correct 4 ms 27484 KB Output is correct
29 Correct 5 ms 27740 KB Output is correct
30 Correct 4 ms 27484 KB Output is correct
31 Correct 5 ms 27484 KB Output is correct
32 Correct 5 ms 27484 KB Output is correct
33 Correct 4 ms 27552 KB Output is correct
34 Correct 4 ms 27488 KB Output is correct
35 Correct 5 ms 27696 KB Output is correct
36 Correct 4 ms 27484 KB Output is correct
37 Correct 4 ms 27484 KB Output is correct
38 Correct 54 ms 33116 KB Output is correct
39 Correct 144 ms 43092 KB Output is correct
40 Correct 34 ms 31320 KB Output is correct
41 Correct 24 ms 29280 KB Output is correct
42 Correct 29 ms 31568 KB Output is correct
43 Correct 19 ms 29024 KB Output is correct
44 Correct 9 ms 28064 KB Output is correct
45 Correct 37 ms 35172 KB Output is correct
46 Correct 36 ms 35164 KB Output is correct
47 Correct 46 ms 37968 KB Output is correct
48 Correct 47 ms 37988 KB Output is correct
49 Correct 35 ms 35312 KB Output is correct
50 Correct 39 ms 35268 KB Output is correct
51 Correct 29 ms 36184 KB Output is correct
52 Correct 29 ms 36180 KB Output is correct
53 Correct 10 ms 28508 KB Output is correct
54 Correct 38 ms 35836 KB Output is correct

Subtask #6
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 27480 KB Output is correct
2 Correct 3 ms 27488 KB Output is correct
3 Correct 3 ms 27484 KB Output is correct
4 Correct 3 ms 27484 KB Output is correct
5 Correct 7 ms 27484 KB Output is correct
6 Correct 4 ms 27484 KB Output is correct
7 Correct 3 ms 27484 KB Output is correct
8 Correct 3 ms 27484 KB Output is correct
9 Correct 3 ms 27484 KB Output is correct
10 Correct 3 ms 27484 KB Output is correct
11 Correct 3 ms 27484 KB Output is correct
12 Correct 4 ms 27480 KB Output is correct
13 Correct 17 ms 28164 KB Output is correct
14 Correct 24 ms 28420 KB Output is correct
15 Correct 21 ms 28248 KB Output is correct
16 Correct 47 ms 36032 KB Output is correct
17 Correct 115 ms 46672 KB Output is correct
18 Correct 273 ms 84144 KB Output is correct
19 Correct 61 ms 36336 KB Output is correct
20 Correct 45 ms 36176 KB Output is correct
21 Correct 45 ms 36152 KB Output is correct
22 Correct 91 ms 47560 KB Output is correct
23 Correct 82 ms 48448 KB Output is correct
24 Correct 95 ms 47820 KB Output is correct
25 Correct 81 ms 47812 KB Output is correct
26 Correct 108 ms 47872 KB Output is correct
27 Correct 116 ms 44388 KB Output is correct
28 Correct 121 ms 48332 KB Output is correct
29 Correct 118 ms 45256 KB Output is correct
30 Correct 69 ms 40904 KB Output is correct
31 Correct 69 ms 41420 KB Output is correct
32 Correct 70 ms 40140 KB Output is correct
33 Correct 75 ms 41420 KB Output is correct

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 27484 KB Output is correct
2 Correct 3 ms 27484 KB Output is correct
3 Correct 3 ms 27508 KB Output is correct
4 Correct 9 ms 27880 KB Output is correct
5 Correct 17 ms 28268 KB Output is correct
6 Correct 3 ms 27484 KB Output is correct
7 Correct 4 ms 27484 KB Output is correct
8 Correct 5 ms 27740 KB Output is correct
9 Correct 50 ms 33144 KB Output is correct
10 Correct 120 ms 43092 KB Output is correct
11 Correct 7 ms 27484 KB Output is correct
12 Correct 25 ms 28716 KB Output is correct
13 Correct 104 ms 100312 KB Output is correct
14 Correct 133 ms 127996 KB Output is correct
15 Runtime error 2184 ms 1048576 KB Execution killed with signal 9
16 Halted 0 ms 0 KB -