oj.uz

Submission #553066

# Submission time Handle Problem Language Result Execution time Memory
553066 2022-04-24T14:50:01 Z tht2005 Jail (JOI22_jail) C++17
72 / 100
 5000 ms 773872 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = 120005;
const int LG = 17;

int n, m, cnt, s[N], t[N], in[N], S[N], T[N], tin[N], tout[N], p[N][LG];
vector<int> aj[N], ej[N];
queue<int> q;

void dfs(int v, int p_) {
    tin[v] = ++(*tin);
    memset(p[v], 0, sizeof(p[v]));
    p[v][0] = p_;
    for(int i = 0; i + 1 < LG; ++i) {
        p[v][i + 1] = p[p[v][i]][i];
    }
    for(int u : aj[v]) {
        if(u == p_) continue;
        dfs(u, v);
    }
    tout[v] = *tin;
}

bool anc(int v, int u) {
    return tin[v] <= tin[u] && tout[u] <= tout[v];
}
int lca(int v, int u) {
    if(anc(v, u)) return v;
    if(anc(u, v)) return u;
    for(int i = LG; i--; ) {
        if(p[v][i] && !anc(p[v][i], u)) {
            v = p[v][i];
        }
    }
    return p[v][0];
}

int main() {
    int _;
    scanf("%d", &_);
    while(_--) {
        scanf("%d", &n);
        for(int i = 1; i < n; ++i) {
            int u, v;
            scanf("%d %d", &u, &v);
            aj[u].push_back(v);
            aj[v].push_back(u);
        }
        *tin = 0;
        dfs(1, 0);
        scanf("%d", &m);
        for(int i = 1; i <= m; ++i) {
            scanf("%d %d", s + i, t + i);
            S[s[i]] = i;
            T[t[i]] = i;
        }
        for(int i = 1; i <= m; ++i) {
            int x = lca(s[i], t[i]);
            for(int v = s[i]; v != (*p[x]); v = p[v][0]) {
                if(S[v] && S[v] != i) {
                    ej[S[v]].push_back(i);
                }
                if(T[v] && T[v] != i) {
                    ej[i].push_back(T[v]);
                }
            }
            for(int v = t[i]; v != x; v = p[v][0]) {
                if(S[v] && S[v] != i) {
                    ej[S[v]].push_back(i);
                }
                if(T[v] && T[v] != i) {
                    ej[i].push_back(T[v]);
                }
            }
        }
        for(int i = 1; i <= m; ++i) {
            for(int j : ej[i]) {
                ++in[j];
            }
        }
        for(int i = 1; i <= m; ++i) {
            if(in[i] == 0) {
                q.push(i);
            }
        }
        cnt = 0;
        while(!q.empty()) {
            int v = q.front();
            q.pop();
            ++cnt;
            for(int u : ej[v]) {
                if((--in[u]) == 0) {
                    q.push(u);
                }
            }
        }
        for(int i = 1; i <= n; ++i) {
            aj[i].clear();
            ej[i].clear();
            S[i] = 0;
            T[i] = 0;
            in[i] = 0;
        }
        puts((cnt == m) ? "Yes" : "No");
    }
    return 0;
}

Compilation message

jail.cpp: In function 'int main()':
jail.cpp:42:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |     scanf("%d", &_);
      |     ~~~~~^~~~~~~~~~
jail.cpp:44:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |         scanf("%d", &n);
      |         ~~~~~^~~~~~~~~~
jail.cpp:47:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |             scanf("%d %d", &u, &v);
      |             ~~~~~^~~~~~~~~~~~~~~~~
jail.cpp:53:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   53 |         scanf("%d", &m);
      |         ~~~~~^~~~~~~~~~
jail.cpp:55:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   55 |             scanf("%d %d", s + i, t + i);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5972 KB Output is correct
2 Correct 3 ms 5972 KB Output is correct
3 Correct 3 ms 5972 KB Output is correct
4 Correct 15 ms 6104 KB Output is correct
5 Correct 29 ms 6008 KB Output is correct
6 Correct 4 ms 5972 KB Output is correct
7 Correct 4 ms 5972 KB Output is correct
8 Correct 6 ms 6100 KB Output is correct
9 Correct 100 ms 9832 KB Output is correct
10 Correct 365 ms 27760 KB Output is correct
11 Correct 9 ms 6140 KB Output is correct
12 Correct 59 ms 6908 KB Output is correct
13 Correct 166 ms 56556 KB Output is correct
14 Correct 178 ms 71404 KB Output is correct
15 Execution timed out 5070 ms 773872 KB Time limit exceeded
16 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5948 KB Output is correct
2 Correct 3 ms 5972 KB Output is correct
3 Correct 5 ms 5960 KB Output is correct
4 Correct 5 ms 5952 KB Output is correct
5 Correct 5 ms 5972 KB Output is correct
6 Correct 7 ms 5956 KB Output is correct
7 Correct 6 ms 6012 KB Output is correct
8 Correct 5 ms 6040 KB Output is correct
9 Correct 6 ms 5972 KB Output is correct
10 Correct 5 ms 5972 KB Output is correct
11 Correct 4 ms 5972 KB Output is correct
12 Correct 4 ms 5960 KB Output is correct
13 Correct 4 ms 5972 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5948 KB Output is correct
2 Correct 3 ms 5972 KB Output is correct
3 Correct 5 ms 5960 KB Output is correct
4 Correct 5 ms 5952 KB Output is correct
5 Correct 5 ms 5972 KB Output is correct
6 Correct 7 ms 5956 KB Output is correct
7 Correct 6 ms 6012 KB Output is correct
8 Correct 5 ms 6040 KB Output is correct
9 Correct 6 ms 5972 KB Output is correct
10 Correct 5 ms 5972 KB Output is correct
11 Correct 4 ms 5972 KB Output is correct
12 Correct 4 ms 5960 KB Output is correct
13 Correct 4 ms 5972 KB Output is correct
14 Correct 3 ms 5972 KB Output is correct
15 Correct 3 ms 5940 KB Output is correct
16 Correct 5 ms 5956 KB Output is correct
17 Correct 4 ms 5972 KB Output is correct
18 Correct 4 ms 5972 KB Output is correct
19 Correct 4 ms 5972 KB Output is correct
20 Correct 6 ms 5948 KB Output is correct
21 Correct 4 ms 5972 KB Output is correct
22 Correct 5 ms 5972 KB Output is correct
23 Correct 3 ms 5972 KB Output is correct
24 Correct 3 ms 5940 KB Output is correct
25 Correct 5 ms 5964 KB Output is correct
26 Correct 3 ms 5972 KB Output is correct
27 Correct 4 ms 5972 KB Output is correct
28 Correct 4 ms 5972 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5948 KB Output is correct
2 Correct 3 ms 5972 KB Output is correct
3 Correct 5 ms 5960 KB Output is correct
4 Correct 5 ms 5952 KB Output is correct
5 Correct 5 ms 5972 KB Output is correct
6 Correct 7 ms 5956 KB Output is correct
7 Correct 6 ms 6012 KB Output is correct
8 Correct 5 ms 6040 KB Output is correct
9 Correct 6 ms 5972 KB Output is correct
10 Correct 5 ms 5972 KB Output is correct
11 Correct 4 ms 5972 KB Output is correct
12 Correct 4 ms 5960 KB Output is correct
13 Correct 4 ms 5972 KB Output is correct
14 Correct 3 ms 5972 KB Output is correct
15 Correct 3 ms 5940 KB Output is correct
16 Correct 5 ms 5956 KB Output is correct
17 Correct 4 ms 5972 KB Output is correct
18 Correct 4 ms 5972 KB Output is correct
19 Correct 4 ms 5972 KB Output is correct
20 Correct 6 ms 5948 KB Output is correct
21 Correct 4 ms 5972 KB Output is correct
22 Correct 5 ms 5972 KB Output is correct
23 Correct 3 ms 5972 KB Output is correct
24 Correct 3 ms 5940 KB Output is correct
25 Correct 5 ms 5964 KB Output is correct
26 Correct 3 ms 5972 KB Output is correct
27 Correct 4 ms 5972 KB Output is correct
28 Correct 4 ms 5972 KB Output is correct
29 Correct 7 ms 6084 KB Output is correct
30 Correct 5 ms 6068 KB Output is correct
31 Correct 6 ms 6084 KB Output is correct
32 Correct 5 ms 5972 KB Output is correct
33 Correct 5 ms 5972 KB Output is correct
34 Correct 5 ms 6060 KB Output is correct
35 Correct 6 ms 6080 KB Output is correct
36 Correct 5 ms 5972 KB Output is correct
37 Correct 5 ms 5972 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5948 KB Output is correct
2 Correct 3 ms 5972 KB Output is correct
3 Correct 5 ms 5960 KB Output is correct
4 Correct 5 ms 5952 KB Output is correct
5 Correct 5 ms 5972 KB Output is correct
6 Correct 7 ms 5956 KB Output is correct
7 Correct 6 ms 6012 KB Output is correct
8 Correct 5 ms 6040 KB Output is correct
9 Correct 6 ms 5972 KB Output is correct
10 Correct 5 ms 5972 KB Output is correct
11 Correct 4 ms 5972 KB Output is correct
12 Correct 4 ms 5960 KB Output is correct
13 Correct 4 ms 5972 KB Output is correct
14 Correct 3 ms 5972 KB Output is correct
15 Correct 3 ms 5940 KB Output is correct
16 Correct 5 ms 5956 KB Output is correct
17 Correct 4 ms 5972 KB Output is correct
18 Correct 4 ms 5972 KB Output is correct
19 Correct 4 ms 5972 KB Output is correct
20 Correct 6 ms 5948 KB Output is correct
21 Correct 4 ms 5972 KB Output is correct
22 Correct 5 ms 5972 KB Output is correct
23 Correct 3 ms 5972 KB Output is correct
24 Correct 3 ms 5940 KB Output is correct
25 Correct 5 ms 5964 KB Output is correct
26 Correct 3 ms 5972 KB Output is correct
27 Correct 4 ms 5972 KB Output is correct
28 Correct 4 ms 5972 KB Output is correct
29 Correct 7 ms 6084 KB Output is correct
30 Correct 5 ms 6068 KB Output is correct
31 Correct 6 ms 6084 KB Output is correct
32 Correct 5 ms 5972 KB Output is correct
33 Correct 5 ms 5972 KB Output is correct
34 Correct 5 ms 6060 KB Output is correct
35 Correct 6 ms 6080 KB Output is correct
36 Correct 5 ms 5972 KB Output is correct
37 Correct 5 ms 5972 KB Output is correct
38 Correct 92 ms 9528 KB Output is correct
39 Correct 368 ms 28140 KB Output is correct
40 Correct 67 ms 9112 KB Output is correct
41 Correct 37 ms 7604 KB Output is correct
42 Correct 52 ms 9140 KB Output is correct
43 Correct 35 ms 7884 KB Output is correct
44 Correct 12 ms 6356 KB Output is correct
45 Correct 73 ms 21368 KB Output is correct
46 Correct 75 ms 21452 KB Output is correct
47 Correct 119 ms 24144 KB Output is correct
48 Correct 127 ms 24140 KB Output is correct
49 Correct 71 ms 21592 KB Output is correct
50 Correct 79 ms 21340 KB Output is correct
51 Correct 53 ms 21324 KB Output is correct
52 Correct 55 ms 22296 KB Output is correct
53 Correct 13 ms 6988 KB Output is correct
54 Correct 79 ms 21300 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5972 KB Output is correct
2 Correct 3 ms 5940 KB Output is correct
3 Correct 3 ms 5972 KB Output is correct
4 Correct 3 ms 5924 KB Output is correct
5 Correct 10 ms 6100 KB Output is correct
6 Correct 4 ms 5972 KB Output is correct
7 Correct 4 ms 5972 KB Output is correct
8 Correct 3 ms 5940 KB Output is correct
9 Correct 4 ms 5972 KB Output is correct
10 Correct 3 ms 5972 KB Output is correct
11 Correct 4 ms 5972 KB Output is correct
12 Correct 5 ms 5972 KB Output is correct
13 Correct 26 ms 6480 KB Output is correct
14 Correct 36 ms 6792 KB Output is correct
15 Correct 32 ms 6536 KB Output is correct
16 Correct 89 ms 21532 KB Output is correct
17 Correct 195 ms 26384 KB Output is correct
18 Correct 326 ms 47160 KB Output is correct
19 Correct 87 ms 21524 KB Output is correct
20 Correct 88 ms 20528 KB Output is correct
21 Correct 89 ms 20752 KB Output is correct
22 Correct 119 ms 28096 KB Output is correct
23 Correct 119 ms 28544 KB Output is correct
24 Correct 114 ms 26572 KB Output is correct
25 Correct 121 ms 26672 KB Output is correct
26 Correct 120 ms 28444 KB Output is correct
27 Correct 142 ms 25884 KB Output is correct
28 Correct 135 ms 26420 KB Output is correct
29 Correct 157 ms 27700 KB Output is correct
30 Correct 117 ms 24648 KB Output is correct
31 Correct 111 ms 23948 KB Output is correct
32 Correct 156 ms 24700 KB Output is correct
33 Correct 116 ms 23852 KB Output is correct

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5972 KB Output is correct
2 Correct 3 ms 5972 KB Output is correct
3 Correct 3 ms 5972 KB Output is correct
4 Correct 15 ms 6104 KB Output is correct
5 Correct 29 ms 6008 KB Output is correct
6 Correct 4 ms 5972 KB Output is correct
7 Correct 4 ms 5972 KB Output is correct
8 Correct 6 ms 6100 KB Output is correct
9 Correct 100 ms 9832 KB Output is correct
10 Correct 365 ms 27760 KB Output is correct
11 Correct 9 ms 6140 KB Output is correct
12 Correct 59 ms 6908 KB Output is correct
13 Correct 166 ms 56556 KB Output is correct
14 Correct 178 ms 71404 KB Output is correct
15 Execution timed out 5070 ms 773872 KB Time limit exceeded
16 Halted 0 ms 0 KB -