oj.uz

답안 #776279

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
776279 2023-07-07T14:18:55 Z eltu0815 Jail (JOI22_jail) C++14
72 / 100
 5000 ms 502236 KB 
#include <bits/stdc++.h>
#define MAX 500005
#define MOD (ll)(1e9+7)
#define INF (ll)(1e18)
 
using namespace std;    
typedef long long ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
 
int n, m, tt;
int parent[120005][25];
int s[120005], t[120005], dep[120005], deg[120005];
vector<int> S[120005];
vector<int> T[120005];
vector<int> graph[120005];
vector<int> DAG[120005];

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    
    cin >> tt;
    while(tt--) {
        cin >> n;
        for(int i = 1; i <= n; ++i) graph[i].clear(), DAG[i].clear(), S[i].clear(), T[i].clear();
        for(int i = 1; i <= n; ++i) deg[i] = 0;
        for(int i = 1; i <= n; ++i) for(int j = 0; j <= 20; ++j) parent[i][j] = 0;
        for(int i = 1; i <= n - 1; ++i) {
            int a, b; cin >> a >> b;
            graph[a].push_back(b);
            graph[b].push_back(a);
        }
        
        cin >> m;
        for(int i = 1; i <= m; ++i) cin >> s[i] >> t[i];
        
        auto dfs = [&](auto&& self, int node, int par) -> void {
            parent[node][0] = par; dep[node] = dep[par] + 1;
            for(auto v : graph[node]) if(v != par) self(self, v, node);
        };
        dfs(dfs, 1, 0);
        for(int j = 1; j < 20; ++j) for(int i = 1; i <= n; ++i) parent[i][j] = parent[parent[i][j - 1]][j - 1];
        
        auto LCA = [&](int u, int v) -> int {
            if(dep[u] < dep[v]) swap(u, v);
            int diff = dep[u] - dep[v], j = 0;
            while(diff) {
                if(diff & 1) u = parent[u][j];
                diff >>= 1; ++j;
            }
            if(u == v) return u;
            for(int i = 19; i >= 0; --i) {
                if(parent[u][i] != parent[v][i]) {
                    u = parent[u][i];
                    v = parent[v][i];
                }
            }
            return parent[u][0];
        };
        
        for(int i = 1; i <= m; ++i) S[s[i]].push_back(i), T[t[i]].push_back(i);
        for(int i = 1; i <= m; ++i) {
            int p = LCA(s[i], t[i]);
            for(int tmp : {s[i], t[i]}) {
                while(tmp != p) {
                    for(auto j : S[tmp]) if(j != i) DAG[j].push_back(i), deg[i]++;
                    for(auto j : T[tmp]) if(j != i) DAG[i].push_back(j), deg[j]++;
                    tmp = parent[tmp][0];
                }
            }
            for(auto j : S[p]) if(j != i) DAG[j].push_back(i), deg[i]++;
            for(auto j : T[p]) if(j != i) DAG[i].push_back(j), deg[j]++;
        }
        
        queue<int> q; int cnt = 0;
        for(int i = 1; i <= m; ++i) if(deg[i] == 0) q.push(i);
        while(!q.empty()) {
            int node = q.front(); q.pop(); ++cnt;
            for(auto v : DAG[node]) if(--deg[v] == 0) q.push(v);
        }
        
        if(cnt == m) cout << "Yes\n";
        else cout << "No\n";
    }
    
    return 0;
}

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 11620 KB Output is correct
2 Correct 5 ms 11604 KB Output is correct
3 Correct 6 ms 11604 KB Output is correct
4 Correct 13 ms 11728 KB Output is correct
5 Correct 23 ms 11756 KB Output is correct
6 Correct 7 ms 11604 KB Output is correct
7 Correct 6 ms 11608 KB Output is correct
8 Correct 7 ms 11824 KB Output is correct
9 Correct 103 ms 16056 KB Output is correct
10 Correct 621 ms 34540 KB Output is correct
11 Correct 10 ms 11772 KB Output is correct
12 Correct 43 ms 12696 KB Output is correct
13 Correct 127 ms 66936 KB Output is correct
14 Correct 139 ms 80852 KB Output is correct
15 Execution timed out 5095 ms 502236 KB Time limit exceeded
16 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 11600 KB Output is correct
2 Correct 8 ms 11604 KB Output is correct
3 Correct 7 ms 11680 KB Output is correct
4 Correct 6 ms 11604 KB Output is correct
5 Correct 6 ms 11608 KB Output is correct
6 Correct 7 ms 11688 KB Output is correct
7 Correct 6 ms 11608 KB Output is correct
8 Correct 8 ms 11620 KB Output is correct
9 Correct 6 ms 11612 KB Output is correct
10 Correct 7 ms 11604 KB Output is correct
11 Correct 12 ms 11624 KB Output is correct
12 Correct 6 ms 11584 KB Output is correct
13 Correct 6 ms 11672 KB Output is correct

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 11600 KB Output is correct
2 Correct 8 ms 11604 KB Output is correct
3 Correct 7 ms 11680 KB Output is correct
4 Correct 6 ms 11604 KB Output is correct
5 Correct 6 ms 11608 KB Output is correct
6 Correct 7 ms 11688 KB Output is correct
7 Correct 6 ms 11608 KB Output is correct
8 Correct 8 ms 11620 KB Output is correct
9 Correct 6 ms 11612 KB Output is correct
10 Correct 7 ms 11604 KB Output is correct
11 Correct 12 ms 11624 KB Output is correct
12 Correct 6 ms 11584 KB Output is correct
13 Correct 6 ms 11672 KB Output is correct
14 Correct 13 ms 11520 KB Output is correct
15 Correct 11 ms 11604 KB Output is correct
16 Correct 7 ms 11604 KB Output is correct
17 Correct 7 ms 11608 KB Output is correct
18 Correct 6 ms 11628 KB Output is correct
19 Correct 8 ms 11604 KB Output is correct
20 Correct 7 ms 11620 KB Output is correct
21 Correct 9 ms 11616 KB Output is correct
22 Correct 6 ms 11604 KB Output is correct
23 Correct 6 ms 11604 KB Output is correct
24 Correct 6 ms 11600 KB Output is correct
25 Correct 8 ms 11824 KB Output is correct
26 Correct 6 ms 11604 KB Output is correct
27 Correct 7 ms 11696 KB Output is correct
28 Correct 6 ms 11604 KB Output is correct

Subtask #4
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 11600 KB Output is correct
2 Correct 8 ms 11604 KB Output is correct
3 Correct 7 ms 11680 KB Output is correct
4 Correct 6 ms 11604 KB Output is correct
5 Correct 6 ms 11608 KB Output is correct
6 Correct 7 ms 11688 KB Output is correct
7 Correct 6 ms 11608 KB Output is correct
8 Correct 8 ms 11620 KB Output is correct
9 Correct 6 ms 11612 KB Output is correct
10 Correct 7 ms 11604 KB Output is correct
11 Correct 12 ms 11624 KB Output is correct
12 Correct 6 ms 11584 KB Output is correct
13 Correct 6 ms 11672 KB Output is correct
14 Correct 13 ms 11520 KB Output is correct
15 Correct 11 ms 11604 KB Output is correct
16 Correct 7 ms 11604 KB Output is correct
17 Correct 7 ms 11608 KB Output is correct
18 Correct 6 ms 11628 KB Output is correct
19 Correct 8 ms 11604 KB Output is correct
20 Correct 7 ms 11620 KB Output is correct
21 Correct 9 ms 11616 KB Output is correct
22 Correct 6 ms 11604 KB Output is correct
23 Correct 6 ms 11604 KB Output is correct
24 Correct 6 ms 11600 KB Output is correct
25 Correct 8 ms 11824 KB Output is correct
26 Correct 6 ms 11604 KB Output is correct
27 Correct 7 ms 11696 KB Output is correct
28 Correct 6 ms 11604 KB Output is correct
29 Correct 9 ms 11736 KB Output is correct
30 Correct 7 ms 11732 KB Output is correct
31 Correct 7 ms 11732 KB Output is correct
32 Correct 8 ms 11596 KB Output is correct
33 Correct 7 ms 11592 KB Output is correct
34 Correct 7 ms 11608 KB Output is correct
35 Correct 8 ms 11732 KB Output is correct
36 Correct 7 ms 11612 KB Output is correct
37 Correct 6 ms 11612 KB Output is correct

Subtask #5
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 11600 KB Output is correct
2 Correct 8 ms 11604 KB Output is correct
3 Correct 7 ms 11680 KB Output is correct
4 Correct 6 ms 11604 KB Output is correct
5 Correct 6 ms 11608 KB Output is correct
6 Correct 7 ms 11688 KB Output is correct
7 Correct 6 ms 11608 KB Output is correct
8 Correct 8 ms 11620 KB Output is correct
9 Correct 6 ms 11612 KB Output is correct
10 Correct 7 ms 11604 KB Output is correct
11 Correct 12 ms 11624 KB Output is correct
12 Correct 6 ms 11584 KB Output is correct
13 Correct 6 ms 11672 KB Output is correct
14 Correct 13 ms 11520 KB Output is correct
15 Correct 11 ms 11604 KB Output is correct
16 Correct 7 ms 11604 KB Output is correct
17 Correct 7 ms 11608 KB Output is correct
18 Correct 6 ms 11628 KB Output is correct
19 Correct 8 ms 11604 KB Output is correct
20 Correct 7 ms 11620 KB Output is correct
21 Correct 9 ms 11616 KB Output is correct
22 Correct 6 ms 11604 KB Output is correct
23 Correct 6 ms 11604 KB Output is correct
24 Correct 6 ms 11600 KB Output is correct
25 Correct 8 ms 11824 KB Output is correct
26 Correct 6 ms 11604 KB Output is correct
27 Correct 7 ms 11696 KB Output is correct
28 Correct 6 ms 11604 KB Output is correct
29 Correct 9 ms 11736 KB Output is correct
30 Correct 7 ms 11732 KB Output is correct
31 Correct 7 ms 11732 KB Output is correct
32 Correct 8 ms 11596 KB Output is correct
33 Correct 7 ms 11592 KB Output is correct
34 Correct 7 ms 11608 KB Output is correct
35 Correct 8 ms 11732 KB Output is correct
36 Correct 7 ms 11612 KB Output is correct
37 Correct 6 ms 11612 KB Output is correct
38 Correct 95 ms 16104 KB Output is correct
39 Correct 662 ms 34544 KB Output is correct
40 Correct 76 ms 15060 KB Output is correct
41 Correct 34 ms 13900 KB Output is correct
42 Correct 49 ms 15060 KB Output is correct
43 Correct 28 ms 13664 KB Output is correct
44 Correct 12 ms 12120 KB Output is correct
45 Correct 61 ms 29500 KB Output is correct
46 Correct 61 ms 29500 KB Output is correct
47 Correct 271 ms 31360 KB Output is correct
48 Correct 287 ms 31368 KB Output is correct
49 Correct 65 ms 29492 KB Output is correct
50 Correct 66 ms 29556 KB Output is correct
51 Correct 52 ms 30044 KB Output is correct
52 Correct 51 ms 30120 KB Output is correct
53 Correct 15 ms 13080 KB Output is correct
54 Correct 67 ms 29424 KB Output is correct

Subtask #6
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 11604 KB Output is correct
2 Correct 5 ms 11604 KB Output is correct
3 Correct 8 ms 11532 KB Output is correct
4 Correct 6 ms 11604 KB Output is correct
5 Correct 12 ms 11784 KB Output is correct
6 Correct 6 ms 11604 KB Output is correct
7 Correct 7 ms 11552 KB Output is correct
8 Correct 7 ms 11600 KB Output is correct
9 Correct 6 ms 11532 KB Output is correct
10 Correct 6 ms 11604 KB Output is correct
11 Correct 6 ms 11592 KB Output is correct
12 Correct 8 ms 11728 KB Output is correct
13 Correct 21 ms 12176 KB Output is correct
14 Correct 30 ms 12500 KB Output is correct
15 Correct 25 ms 12244 KB Output is correct
16 Correct 75 ms 30668 KB Output is correct
17 Correct 147 ms 39816 KB Output is correct
18 Correct 400 ms 63552 KB Output is correct
19 Correct 72 ms 31488 KB Output is correct
20 Correct 75 ms 31516 KB Output is correct
21 Correct 73 ms 31520 KB Output is correct
22 Correct 126 ms 40252 KB Output is correct
23 Correct 113 ms 40780 KB Output is correct
24 Correct 113 ms 40408 KB Output is correct
25 Correct 117 ms 40516 KB Output is correct
26 Correct 114 ms 40408 KB Output is correct
27 Correct 192 ms 43488 KB Output is correct
28 Correct 172 ms 43544 KB Output is correct
29 Correct 171 ms 43536 KB Output is correct
30 Correct 103 ms 36420 KB Output is correct
31 Correct 104 ms 36452 KB Output is correct
32 Correct 114 ms 36436 KB Output is correct
33 Correct 108 ms 36416 KB Output is correct

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 11620 KB Output is correct
2 Correct 5 ms 11604 KB Output is correct
3 Correct 6 ms 11604 KB Output is correct
4 Correct 13 ms 11728 KB Output is correct
5 Correct 23 ms 11756 KB Output is correct
6 Correct 7 ms 11604 KB Output is correct
7 Correct 6 ms 11608 KB Output is correct
8 Correct 7 ms 11824 KB Output is correct
9 Correct 103 ms 16056 KB Output is correct
10 Correct 621 ms 34540 KB Output is correct
11 Correct 10 ms 11772 KB Output is correct
12 Correct 43 ms 12696 KB Output is correct
13 Correct 127 ms 66936 KB Output is correct
14 Correct 139 ms 80852 KB Output is correct
15 Execution timed out 5095 ms 502236 KB Time limit exceeded
16 Halted 0 ms 0 KB -