oj.uz

Submission #280089

# Submission time Handle Problem Language Result Execution time Memory
280089 2020-08-22T13:27:47 Z 3zp Mergers (JOI19_mergers) C++14
100 / 100
 1715 ms 78092 KB 
#include<bits/stdc++.h>
using namespace std;
const int mN = 500009;
vector<int> V[mN];
int L[mN],R[mN], A[mN], St[mN], En[mN], S[mN], Good[mN], Deg[mN], Sz[mN], Min[mN], Max[mN];
int c = 1;
int good_cnt = 0;
void dfs1(int x, int p){
    L[x] = c;
    R[x] = c;
    A[c] = x;
    c++;
    for(int y : V[x]){
        if(y == p) continue;
        dfs1(y, x);
        R[x] = R[y];
    }
}
void dfs2(int x, int p){
    if(Good[x]) Sz[x] = 1;
    for(int y : V[x]){
        if(y == p) continue;
        dfs2(y, x);
        Sz[x] += Sz[y];
    }

    if(x > 1 && (Good[x] || (Sz[x] > 0 && Sz[x] < good_cnt))){
        Deg[x]++;
        Deg[p]++;
    }
}
void dfs3(int x, int p){
    Min[x] = St[S[x]];
    Max[x] = En[S[x]];
    for(int y : V[x]){
        if(y == p) continue;
        dfs3(y, x);
        Min[x] = min(Min[x], Min[y]);
        Max[x] = max(Max[x], Max[y]);
    }
    if(x > 1 && Min[x] == L[x] && Max[x] == R[x]){
        Good[x] = 1;
        good_cnt++;
    }

}
main(){
    int n, k;
    cin >> n >> k;
    for(int i = 1; i < n; i++){
        int a, b;
        cin >> a >> b;
        V[a].push_back(b);
        V[b].push_back(a);
    }
    for(int i = 1; i <= n; i++)
        cin >> S[i];
    dfs1(1, 0);
    for(int i = 1; i <= n; i++){
        int x = A[i];
        if(!St[S[x]]) St[S[x]] = i;
        En[S[x]] = i;
    }
    dfs3(1, 0);
    dfs2(1, 0);
    int leaf_cnt = 0;
    for(int i = 1; i <= n; i++)
        if(Deg[i] == 1) leaf_cnt++;
    cout << (leaf_cnt + 1) / 2 << endl;
}

Compilation message

mergers.cpp:47:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   47 | main(){
      |      ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 12192 KB Output is correct
2 Correct 8 ms 12160 KB Output is correct
3 Correct 8 ms 12160 KB Output is correct
4 Correct 8 ms 12116 KB Output is correct
5 Correct 9 ms 12160 KB Output is correct
6 Correct 8 ms 12160 KB Output is correct
7 Correct 10 ms 12160 KB Output is correct
8 Correct 9 ms 12160 KB Output is correct
9 Correct 9 ms 12160 KB Output is correct
10 Correct 9 ms 12160 KB Output is correct
11 Correct 8 ms 12160 KB Output is correct
12 Correct 8 ms 12160 KB Output is correct
13 Correct 8 ms 12160 KB Output is correct
14 Correct 8 ms 12160 KB Output is correct
15 Correct 8 ms 12160 KB Output is correct
16 Correct 8 ms 12160 KB Output is correct
17 Correct 8 ms 12160 KB Output is correct
18 Correct 10 ms 12160 KB Output is correct
19 Correct 8 ms 12160 KB Output is correct
20 Correct 8 ms 12160 KB Output is correct
21 Correct 8 ms 12160 KB Output is correct
22 Correct 8 ms 12160 KB Output is correct
23 Correct 10 ms 12160 KB Output is correct
24 Correct 7 ms 12160 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 12192 KB Output is correct
2 Correct 8 ms 12160 KB Output is correct
3 Correct 8 ms 12160 KB Output is correct
4 Correct 8 ms 12116 KB Output is correct
5 Correct 9 ms 12160 KB Output is correct
6 Correct 8 ms 12160 KB Output is correct
7 Correct 10 ms 12160 KB Output is correct
8 Correct 9 ms 12160 KB Output is correct
9 Correct 9 ms 12160 KB Output is correct
10 Correct 9 ms 12160 KB Output is correct
11 Correct 8 ms 12160 KB Output is correct
12 Correct 8 ms 12160 KB Output is correct
13 Correct 8 ms 12160 KB Output is correct
14 Correct 8 ms 12160 KB Output is correct
15 Correct 8 ms 12160 KB Output is correct
16 Correct 8 ms 12160 KB Output is correct
17 Correct 8 ms 12160 KB Output is correct
18 Correct 10 ms 12160 KB Output is correct
19 Correct 8 ms 12160 KB Output is correct
20 Correct 8 ms 12160 KB Output is correct
21 Correct 8 ms 12160 KB Output is correct
22 Correct 8 ms 12160 KB Output is correct
23 Correct 10 ms 12160 KB Output is correct
24 Correct 7 ms 12160 KB Output is correct
25 Correct 8 ms 12160 KB Output is correct
26 Correct 13 ms 12416 KB Output is correct
27 Correct 13 ms 12416 KB Output is correct
28 Correct 16 ms 12544 KB Output is correct
29 Correct 13 ms 12416 KB Output is correct
30 Correct 16 ms 12416 KB Output is correct
31 Correct 8 ms 12160 KB Output is correct
32 Correct 16 ms 12544 KB Output is correct
33 Correct 8 ms 12160 KB Output is correct
34 Correct 12 ms 12416 KB Output is correct
35 Correct 13 ms 12416 KB Output is correct
36 Correct 14 ms 12416 KB Output is correct
37 Correct 12 ms 12416 KB Output is correct
38 Correct 8 ms 12160 KB Output is correct
39 Correct 13 ms 12392 KB Output is correct
40 Correct 14 ms 12288 KB Output is correct
41 Correct 15 ms 12416 KB Output is correct
42 Correct 13 ms 12416 KB Output is correct
43 Correct 15 ms 12544 KB Output is correct
44 Correct 8 ms 12160 KB Output is correct
45 Correct 13 ms 12416 KB Output is correct
46 Correct 13 ms 12416 KB Output is correct
47 Correct 8 ms 12160 KB Output is correct
48 Correct 15 ms 12416 KB Output is correct
49 Correct 13 ms 12416 KB Output is correct
50 Correct 13 ms 12416 KB Output is correct
51 Correct 13 ms 12416 KB Output is correct
52 Correct 15 ms 12416 KB Output is correct
53 Correct 13 ms 12416 KB Output is correct
54 Correct 13 ms 12288 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 12192 KB Output is correct
2 Correct 8 ms 12160 KB Output is correct
3 Correct 8 ms 12160 KB Output is correct
4 Correct 8 ms 12116 KB Output is correct
5 Correct 9 ms 12160 KB Output is correct
6 Correct 8 ms 12160 KB Output is correct
7 Correct 10 ms 12160 KB Output is correct
8 Correct 9 ms 12160 KB Output is correct
9 Correct 9 ms 12160 KB Output is correct
10 Correct 9 ms 12160 KB Output is correct
11 Correct 8 ms 12160 KB Output is correct
12 Correct 8 ms 12160 KB Output is correct
13 Correct 8 ms 12160 KB Output is correct
14 Correct 8 ms 12160 KB Output is correct
15 Correct 8 ms 12160 KB Output is correct
16 Correct 8 ms 12160 KB Output is correct
17 Correct 8 ms 12160 KB Output is correct
18 Correct 10 ms 12160 KB Output is correct
19 Correct 8 ms 12160 KB Output is correct
20 Correct 8 ms 12160 KB Output is correct
21 Correct 8 ms 12160 KB Output is correct
22 Correct 8 ms 12160 KB Output is correct
23 Correct 10 ms 12160 KB Output is correct
24 Correct 7 ms 12160 KB Output is correct
25 Correct 9 ms 12160 KB Output is correct
26 Correct 187 ms 19444 KB Output is correct
27 Correct 203 ms 19576 KB Output is correct
28 Correct 13 ms 12416 KB Output is correct
29 Correct 9 ms 12160 KB Output is correct
30 Correct 9 ms 12160 KB Output is correct
31 Correct 203 ms 20216 KB Output is correct
32 Correct 12 ms 12288 KB Output is correct
33 Correct 247 ms 25208 KB Output is correct
34 Correct 210 ms 19576 KB Output is correct
35 Correct 13 ms 12416 KB Output is correct
36 Correct 243 ms 20600 KB Output is correct
37 Correct 14 ms 12416 KB Output is correct
38 Correct 13 ms 12416 KB Output is correct
39 Correct 177 ms 19440 KB Output is correct
40 Correct 13 ms 12544 KB Output is correct
41 Correct 220 ms 19496 KB Output is correct
42 Correct 244 ms 21496 KB Output is correct
43 Correct 8 ms 12160 KB Output is correct
44 Correct 250 ms 25464 KB Output is correct
45 Correct 223 ms 22520 KB Output is correct
46 Correct 12 ms 12416 KB Output is correct
47 Correct 14 ms 12288 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 180 ms 18028 KB Output is correct
2 Correct 211 ms 19972 KB Output is correct
3 Correct 15 ms 12416 KB Output is correct
4 Correct 12 ms 12288 KB Output is correct
5 Correct 8 ms 12160 KB Output is correct
6 Correct 8 ms 12160 KB Output is correct
7 Correct 12 ms 12288 KB Output is correct
8 Correct 266 ms 19244 KB Output is correct
9 Correct 12 ms 12288 KB Output is correct
10 Correct 238 ms 18900 KB Output is correct
11 Correct 10 ms 12160 KB Output is correct
12 Correct 260 ms 20328 KB Output is correct
13 Correct 268 ms 20984 KB Output is correct
14 Correct 263 ms 21368 KB Output is correct
15 Correct 191 ms 19416 KB Output is correct
16 Correct 15 ms 12416 KB Output is correct
17 Correct 8 ms 12160 KB Output is correct
18 Correct 231 ms 21604 KB Output is correct
19 Correct 277 ms 24468 KB Output is correct
20 Correct 15 ms 12416 KB Output is correct
21 Correct 8 ms 12160 KB Output is correct
22 Correct 197 ms 21184 KB Output is correct
23 Correct 13 ms 12436 KB Output is correct
24 Correct 263 ms 20472 KB Output is correct
25 Correct 297 ms 23488 KB Output is correct
26 Correct 14 ms 12416 KB Output is correct
27 Correct 15 ms 12416 KB Output is correct
28 Correct 14 ms 12416 KB Output is correct
29 Correct 13 ms 12416 KB Output is correct
30 Correct 14 ms 12416 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 12192 KB Output is correct
2 Correct 8 ms 12160 KB Output is correct
3 Correct 8 ms 12160 KB Output is correct
4 Correct 8 ms 12116 KB Output is correct
5 Correct 9 ms 12160 KB Output is correct
6 Correct 8 ms 12160 KB Output is correct
7 Correct 10 ms 12160 KB Output is correct
8 Correct 9 ms 12160 KB Output is correct
9 Correct 9 ms 12160 KB Output is correct
10 Correct 9 ms 12160 KB Output is correct
11 Correct 8 ms 12160 KB Output is correct
12 Correct 8 ms 12160 KB Output is correct
13 Correct 8 ms 12160 KB Output is correct
14 Correct 8 ms 12160 KB Output is correct
15 Correct 8 ms 12160 KB Output is correct
16 Correct 8 ms 12160 KB Output is correct
17 Correct 8 ms 12160 KB Output is correct
18 Correct 10 ms 12160 KB Output is correct
19 Correct 8 ms 12160 KB Output is correct
20 Correct 8 ms 12160 KB Output is correct
21 Correct 8 ms 12160 KB Output is correct
22 Correct 8 ms 12160 KB Output is correct
23 Correct 10 ms 12160 KB Output is correct
24 Correct 7 ms 12160 KB Output is correct
25 Correct 8 ms 12160 KB Output is correct
26 Correct 13 ms 12416 KB Output is correct
27 Correct 13 ms 12416 KB Output is correct
28 Correct 16 ms 12544 KB Output is correct
29 Correct 13 ms 12416 KB Output is correct
30 Correct 16 ms 12416 KB Output is correct
31 Correct 8 ms 12160 KB Output is correct
32 Correct 16 ms 12544 KB Output is correct
33 Correct 8 ms 12160 KB Output is correct
34 Correct 12 ms 12416 KB Output is correct
35 Correct 13 ms 12416 KB Output is correct
36 Correct 14 ms 12416 KB Output is correct
37 Correct 12 ms 12416 KB Output is correct
38 Correct 8 ms 12160 KB Output is correct
39 Correct 13 ms 12392 KB Output is correct
40 Correct 14 ms 12288 KB Output is correct
41 Correct 15 ms 12416 KB Output is correct
42 Correct 13 ms 12416 KB Output is correct
43 Correct 15 ms 12544 KB Output is correct
44 Correct 8 ms 12160 KB Output is correct
45 Correct 13 ms 12416 KB Output is correct
46 Correct 13 ms 12416 KB Output is correct
47 Correct 8 ms 12160 KB Output is correct
48 Correct 15 ms 12416 KB Output is correct
49 Correct 13 ms 12416 KB Output is correct
50 Correct 13 ms 12416 KB Output is correct
51 Correct 13 ms 12416 KB Output is correct
52 Correct 15 ms 12416 KB Output is correct
53 Correct 13 ms 12416 KB Output is correct
54 Correct 13 ms 12288 KB Output is correct
55 Correct 9 ms 12160 KB Output is correct
56 Correct 187 ms 19444 KB Output is correct
57 Correct 203 ms 19576 KB Output is correct
58 Correct 13 ms 12416 KB Output is correct
59 Correct 9 ms 12160 KB Output is correct
60 Correct 9 ms 12160 KB Output is correct
61 Correct 203 ms 20216 KB Output is correct
62 Correct 12 ms 12288 KB Output is correct
63 Correct 247 ms 25208 KB Output is correct
64 Correct 210 ms 19576 KB Output is correct
65 Correct 13 ms 12416 KB Output is correct
66 Correct 243 ms 20600 KB Output is correct
67 Correct 14 ms 12416 KB Output is correct
68 Correct 13 ms 12416 KB Output is correct
69 Correct 177 ms 19440 KB Output is correct
70 Correct 13 ms 12544 KB Output is correct
71 Correct 220 ms 19496 KB Output is correct
72 Correct 244 ms 21496 KB Output is correct
73 Correct 8 ms 12160 KB Output is correct
74 Correct 250 ms 25464 KB Output is correct
75 Correct 223 ms 22520 KB Output is correct
76 Correct 12 ms 12416 KB Output is correct
77 Correct 14 ms 12288 KB Output is correct
78 Correct 180 ms 18028 KB Output is correct
79 Correct 211 ms 19972 KB Output is correct
80 Correct 15 ms 12416 KB Output is correct
81 Correct 12 ms 12288 KB Output is correct
82 Correct 8 ms 12160 KB Output is correct
83 Correct 8 ms 12160 KB Output is correct
84 Correct 12 ms 12288 KB Output is correct
85 Correct 266 ms 19244 KB Output is correct
86 Correct 12 ms 12288 KB Output is correct
87 Correct 238 ms 18900 KB Output is correct
88 Correct 10 ms 12160 KB Output is correct
89 Correct 260 ms 20328 KB Output is correct
90 Correct 268 ms 20984 KB Output is correct
91 Correct 263 ms 21368 KB Output is correct
92 Correct 191 ms 19416 KB Output is correct
93 Correct 15 ms 12416 KB Output is correct
94 Correct 8 ms 12160 KB Output is correct
95 Correct 231 ms 21604 KB Output is correct
96 Correct 277 ms 24468 KB Output is correct
97 Correct 15 ms 12416 KB Output is correct
98 Correct 8 ms 12160 KB Output is correct
99 Correct 197 ms 21184 KB Output is correct
100 Correct 13 ms 12436 KB Output is correct
101 Correct 263 ms 20472 KB Output is correct
102 Correct 297 ms 23488 KB Output is correct
103 Correct 14 ms 12416 KB Output is correct
104 Correct 15 ms 12416 KB Output is correct
105 Correct 14 ms 12416 KB Output is correct
106 Correct 13 ms 12416 KB Output is correct
107 Correct 14 ms 12416 KB Output is correct
108 Correct 1312 ms 58792 KB Output is correct
109 Correct 1513 ms 63840 KB Output is correct
110 Correct 1526 ms 72804 KB Output is correct
111 Correct 1715 ms 78092 KB Output is correct
112 Correct 1684 ms 70324 KB Output is correct
113 Correct 1267 ms 60880 KB Output is correct
114 Correct 1319 ms 49668 KB Output is correct
115 Correct 1291 ms 49704 KB Output is correct
116 Correct 1462 ms 55980 KB Output is correct
117 Correct 1518 ms 59700 KB Output is correct
118 Correct 1342 ms 53208 KB Output is correct
119 Correct 1513 ms 59756 KB Output is correct
120 Correct 1579 ms 70884 KB Output is correct
121 Correct 1519 ms 59900 KB Output is correct
122 Correct 1501 ms 58104 KB Output is correct
123 Correct 1226 ms 61464 KB Output is correct
124 Correct 1593 ms 58744 KB Output is correct