oj.uz

Submission #566936

# Submission time Handle Problem Language Result Execution time Memory
566936 2022-05-23T06:34:31 Z tqbfjotld Jail (JOI22_jail) C++14
61 / 100
 5000 ms 266276 KB 
#include <bits/stdc++.h>
using namespace std;

vector<int> adjl[120005];
int vis[120005];
int cur;
int fs[120005];
int ls[120005];
vector<int> mid[120005];

int A[120005];
int B[120005];

int dfs1(int node, int st, int dest, int p){
    if (node==dest){
        ls[node] = cur;
        return 1;
    }
    if (st==node){
        fs[node] = cur;
    }
    for (auto x : adjl[node]){
        if (p==x) continue;
        int res = dfs1(x,st,dest,node);
        if (res==1&&st!=node){
            mid[node].push_back(cur);
        }
        if (res==1) return 1;
    }
    return 0;
}

vector<int> adjl2[120005];

bool checkcycle(int node){
    if (vis[node]==2) return false;
    vis[node] = 1;
    for (auto x : adjl2[node]){
        if (vis[x]==1) return true;
        if (checkcycle(x)) return true;
    }
    vis[node] = 2;
    return false;
}

int main(){
    int Q;
    scanf("%d",&Q);
    while (Q--){
        int n;
        scanf("%d",&n);
        for (int x = 1; x<=n; x++){
            adjl[x].clear();
        }
        for (int x = 0; x<n-1; x++){
            int a,b;
            scanf("%d%d",&a,&b);
            adjl[a].push_back(b);
            adjl[b].push_back(a);
        }
        int m;
        scanf("%d",&m);
        for (int x = 0; x<m; x++){
            scanf("%d%d",&A[x],&B[x]);
        }
        for (int x = 1; x<=n; x++){
            fs[x] = -1;
            ls[x] = -1;
            mid[x].clear();
        }
        for (cur = 0; cur<m; cur++){
            dfs1(A[cur],A[cur],B[cur],-1);
        }
        for (int x = 0; x<m; x++){
            adjl2[x].clear();
            vis[x] = 0;
        }
        for (int x = 1; x<=n; x++){
            if (fs[x]!=-1){
                for (auto y : mid[x]){
                    adjl2[fs[x]].push_back(y);
                }
            }
            if (ls[x]!=-1){
                for (auto y : mid[x]){
                    adjl2[y].push_back(ls[x]);
                }
            }
            if (fs[x]!=-1 && ls[x]!=-1){
                adjl2[fs[x]].push_back(ls[x]);
            }
        }
        bool ans = true;
        for (int x = 0; x<m; x++){
            if (checkcycle(x)){
                ans = false;
            }
        }
        printf(ans?"Yes\n":"No\n");
    }
}

Compilation message

jail.cpp: In function 'int main()':
jail.cpp:48:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |     scanf("%d",&Q);
      |     ~~~~~^~~~~~~~~
jail.cpp:51:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |         scanf("%d",&n);
      |         ~~~~~^~~~~~~~~
jail.cpp:57:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   57 |             scanf("%d%d",&a,&b);
      |             ~~~~~^~~~~~~~~~~~~~
jail.cpp:62:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |         scanf("%d",&m);
      |         ~~~~~^~~~~~~~~
jail.cpp:64:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   64 |             scanf("%d%d",&A[x],&B[x]);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8788 KB Output is correct
2 Correct 7 ms 8764 KB Output is correct
3 Correct 5 ms 8808 KB Output is correct
4 Correct 16 ms 8788 KB Output is correct
5 Correct 27 ms 8788 KB Output is correct
6 Correct 6 ms 8788 KB Output is correct
7 Correct 6 ms 8788 KB Output is correct
8 Correct 8 ms 8916 KB Output is correct
9 Correct 361 ms 23316 KB Output is correct
10 Correct 2657 ms 266276 KB Output is correct
11 Correct 11 ms 8788 KB Output is correct
12 Correct 57 ms 8884 KB Output is correct
13 Execution timed out 5027 ms 28124 KB Time limit exceeded
14 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 8788 KB Output is correct
2 Correct 6 ms 8660 KB Output is correct
3 Correct 6 ms 8788 KB Output is correct
4 Correct 8 ms 8788 KB Output is correct
5 Correct 6 ms 8788 KB Output is correct
6 Correct 5 ms 8800 KB Output is correct
7 Correct 5 ms 8800 KB Output is correct
8 Correct 5 ms 8788 KB Output is correct
9 Correct 5 ms 8788 KB Output is correct
10 Correct 7 ms 8788 KB Output is correct
11 Correct 5 ms 8788 KB Output is correct
12 Correct 5 ms 8788 KB Output is correct
13 Correct 6 ms 8788 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 8788 KB Output is correct
2 Correct 6 ms 8660 KB Output is correct
3 Correct 6 ms 8788 KB Output is correct
4 Correct 8 ms 8788 KB Output is correct
5 Correct 6 ms 8788 KB Output is correct
6 Correct 5 ms 8800 KB Output is correct
7 Correct 5 ms 8800 KB Output is correct
8 Correct 5 ms 8788 KB Output is correct
9 Correct 5 ms 8788 KB Output is correct
10 Correct 7 ms 8788 KB Output is correct
11 Correct 5 ms 8788 KB Output is correct
12 Correct 5 ms 8788 KB Output is correct
13 Correct 6 ms 8788 KB Output is correct
14 Correct 6 ms 8664 KB Output is correct
15 Correct 5 ms 8788 KB Output is correct
16 Correct 7 ms 8788 KB Output is correct
17 Correct 6 ms 8788 KB Output is correct
18 Correct 6 ms 8788 KB Output is correct
19 Correct 6 ms 8788 KB Output is correct
20 Correct 6 ms 8788 KB Output is correct
21 Correct 6 ms 8788 KB Output is correct
22 Correct 5 ms 8788 KB Output is correct
23 Correct 4 ms 8660 KB Output is correct
24 Correct 5 ms 8788 KB Output is correct
25 Correct 6 ms 8788 KB Output is correct
26 Correct 5 ms 8788 KB Output is correct
27 Correct 8 ms 8788 KB Output is correct
28 Correct 5 ms 8660 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 8788 KB Output is correct
2 Correct 6 ms 8660 KB Output is correct
3 Correct 6 ms 8788 KB Output is correct
4 Correct 8 ms 8788 KB Output is correct
5 Correct 6 ms 8788 KB Output is correct
6 Correct 5 ms 8800 KB Output is correct
7 Correct 5 ms 8800 KB Output is correct
8 Correct 5 ms 8788 KB Output is correct
9 Correct 5 ms 8788 KB Output is correct
10 Correct 7 ms 8788 KB Output is correct
11 Correct 5 ms 8788 KB Output is correct
12 Correct 5 ms 8788 KB Output is correct
13 Correct 6 ms 8788 KB Output is correct
14 Correct 6 ms 8664 KB Output is correct
15 Correct 5 ms 8788 KB Output is correct
16 Correct 7 ms 8788 KB Output is correct
17 Correct 6 ms 8788 KB Output is correct
18 Correct 6 ms 8788 KB Output is correct
19 Correct 6 ms 8788 KB Output is correct
20 Correct 6 ms 8788 KB Output is correct
21 Correct 6 ms 8788 KB Output is correct
22 Correct 5 ms 8788 KB Output is correct
23 Correct 4 ms 8660 KB Output is correct
24 Correct 5 ms 8788 KB Output is correct
25 Correct 6 ms 8788 KB Output is correct
26 Correct 5 ms 8788 KB Output is correct
27 Correct 8 ms 8788 KB Output is correct
28 Correct 5 ms 8660 KB Output is correct
29 Correct 9 ms 9004 KB Output is correct
30 Correct 10 ms 8788 KB Output is correct
31 Correct 10 ms 8892 KB Output is correct
32 Correct 8 ms 8788 KB Output is correct
33 Correct 9 ms 8788 KB Output is correct
34 Correct 8 ms 8808 KB Output is correct
35 Correct 9 ms 8876 KB Output is correct
36 Correct 8 ms 8788 KB Output is correct
37 Correct 8 ms 8744 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 8788 KB Output is correct
2 Correct 6 ms 8660 KB Output is correct
3 Correct 6 ms 8788 KB Output is correct
4 Correct 8 ms 8788 KB Output is correct
5 Correct 6 ms 8788 KB Output is correct
6 Correct 5 ms 8800 KB Output is correct
7 Correct 5 ms 8800 KB Output is correct
8 Correct 5 ms 8788 KB Output is correct
9 Correct 5 ms 8788 KB Output is correct
10 Correct 7 ms 8788 KB Output is correct
11 Correct 5 ms 8788 KB Output is correct
12 Correct 5 ms 8788 KB Output is correct
13 Correct 6 ms 8788 KB Output is correct
14 Correct 6 ms 8664 KB Output is correct
15 Correct 5 ms 8788 KB Output is correct
16 Correct 7 ms 8788 KB Output is correct
17 Correct 6 ms 8788 KB Output is correct
18 Correct 6 ms 8788 KB Output is correct
19 Correct 6 ms 8788 KB Output is correct
20 Correct 6 ms 8788 KB Output is correct
21 Correct 6 ms 8788 KB Output is correct
22 Correct 5 ms 8788 KB Output is correct
23 Correct 4 ms 8660 KB Output is correct
24 Correct 5 ms 8788 KB Output is correct
25 Correct 6 ms 8788 KB Output is correct
26 Correct 5 ms 8788 KB Output is correct
27 Correct 8 ms 8788 KB Output is correct
28 Correct 5 ms 8660 KB Output is correct
29 Correct 9 ms 9004 KB Output is correct
30 Correct 10 ms 8788 KB Output is correct
31 Correct 10 ms 8892 KB Output is correct
32 Correct 8 ms 8788 KB Output is correct
33 Correct 9 ms 8788 KB Output is correct
34 Correct 8 ms 8808 KB Output is correct
35 Correct 9 ms 8876 KB Output is correct
36 Correct 8 ms 8788 KB Output is correct
37 Correct 8 ms 8744 KB Output is correct
38 Correct 311 ms 23356 KB Output is correct
39 Correct 2477 ms 266220 KB Output is correct
40 Correct 549 ms 16148 KB Output is correct
41 Correct 568 ms 9384 KB Output is correct
42 Correct 211 ms 13600 KB Output is correct
43 Correct 57 ms 9128 KB Output is correct
44 Correct 74 ms 8992 KB Output is correct
45 Correct 1798 ms 14148 KB Output is correct
46 Correct 1654 ms 14216 KB Output is correct
47 Correct 830 ms 66560 KB Output is correct
48 Correct 830 ms 67576 KB Output is correct
49 Correct 1198 ms 16384 KB Output is correct
50 Correct 1409 ms 16628 KB Output is correct
51 Correct 254 ms 15040 KB Output is correct
52 Correct 240 ms 15136 KB Output is correct
53 Correct 54 ms 9228 KB Output is correct
54 Correct 1489 ms 13784 KB Output is correct

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8788 KB Output is correct
2 Correct 5 ms 8660 KB Output is correct
3 Correct 5 ms 8788 KB Output is correct
4 Correct 6 ms 8660 KB Output is correct
5 Correct 11 ms 8788 KB Output is correct
6 Correct 7 ms 8788 KB Output is correct
7 Correct 6 ms 8788 KB Output is correct
8 Correct 5 ms 8788 KB Output is correct
9 Correct 5 ms 8660 KB Output is correct
10 Correct 5 ms 8788 KB Output is correct
11 Correct 5 ms 8660 KB Output is correct
12 Correct 7 ms 8788 KB Output is correct
13 Correct 33 ms 8880 KB Output is correct
14 Correct 45 ms 8808 KB Output is correct
15 Correct 42 ms 8796 KB Output is correct
16 Execution timed out 5033 ms 14324 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8788 KB Output is correct
2 Correct 7 ms 8764 KB Output is correct
3 Correct 5 ms 8808 KB Output is correct
4 Correct 16 ms 8788 KB Output is correct
5 Correct 27 ms 8788 KB Output is correct
6 Correct 6 ms 8788 KB Output is correct
7 Correct 6 ms 8788 KB Output is correct
8 Correct 8 ms 8916 KB Output is correct
9 Correct 361 ms 23316 KB Output is correct
10 Correct 2657 ms 266276 KB Output is correct
11 Correct 11 ms 8788 KB Output is correct
12 Correct 57 ms 8884 KB Output is correct
13 Execution timed out 5027 ms 28124 KB Time limit exceeded
14 Halted 0 ms 0 KB -