oj.uz

Submission #280106

# Submission time Handle Problem Language Result Execution time Memory
280106 2020-08-22T13:36:11 Z 3zp Mergers (JOI19_mergers) C++14
100 / 100
 982 ms 71404 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;
    scanf("%d %d", &n, &k);
    for(int i = 1; i < n; i++){
        int a, b;
        scanf("%d %d", &a, &b);
        V[a].push_back(b);
        V[b].push_back(a);
    }
    for(int i = 1; i <= n; i++)
        scanf("%d", &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++;
    printf("%d\n", (leaf_cnt + 1) / 2 );
}

Compilation message

mergers.cpp:47:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   47 | main(){
      |      ^
mergers.cpp: In function 'int main()':
mergers.cpp:50:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   50 |     scanf("%d %d", &n, &k);
      |     ~~~~~^~~~~~~~~~~~~~~~~
mergers.cpp:53:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   53 |         scanf("%d %d", &a, &b);
      |         ~~~~~^~~~~~~~~~~~~~~~~
mergers.cpp:58:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   58 |         scanf("%d", &S[i]);
      |         ~~~~~^~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 12160 KB Output is correct
2 Correct 8 ms 12160 KB Output is correct
3 Correct 7 ms 12160 KB Output is correct
4 Correct 8 ms 12160 KB Output is correct
5 Correct 8 ms 12136 KB Output is correct
6 Correct 9 ms 12160 KB Output is correct
7 Correct 8 ms 12160 KB Output is correct
8 Correct 8 ms 12160 KB Output is correct
9 Correct 8 ms 12192 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 8 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 7 ms 12160 KB Output is correct
22 Correct 8 ms 12160 KB Output is correct
23 Correct 8 ms 12160 KB Output is correct
24 Correct 8 ms 12160 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 12160 KB Output is correct
2 Correct 8 ms 12160 KB Output is correct
3 Correct 7 ms 12160 KB Output is correct
4 Correct 8 ms 12160 KB Output is correct
5 Correct 8 ms 12136 KB Output is correct
6 Correct 9 ms 12160 KB Output is correct
7 Correct 8 ms 12160 KB Output is correct
8 Correct 8 ms 12160 KB Output is correct
9 Correct 8 ms 12192 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 8 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 7 ms 12160 KB Output is correct
22 Correct 8 ms 12160 KB Output is correct
23 Correct 8 ms 12160 KB Output is correct
24 Correct 8 ms 12160 KB Output is correct
25 Correct 8 ms 12160 KB Output is correct
26 Correct 9 ms 12416 KB Output is correct
27 Correct 10 ms 12416 KB Output is correct
28 Correct 10 ms 12544 KB Output is correct
29 Correct 10 ms 12416 KB Output is correct
30 Correct 11 ms 12416 KB Output is correct
31 Correct 8 ms 12160 KB Output is correct
32 Correct 10 ms 12544 KB Output is correct
33 Correct 8 ms 12160 KB Output is correct
34 Correct 9 ms 12288 KB Output is correct
35 Correct 10 ms 12416 KB Output is correct
36 Correct 10 ms 12416 KB Output is correct
37 Correct 10 ms 12416 KB Output is correct
38 Correct 8 ms 12160 KB Output is correct
39 Correct 10 ms 12416 KB Output is correct
40 Correct 10 ms 12288 KB Output is correct
41 Correct 10 ms 12416 KB Output is correct
42 Correct 9 ms 12416 KB Output is correct
43 Correct 9 ms 12544 KB Output is correct
44 Correct 8 ms 12180 KB Output is correct
45 Correct 11 ms 12416 KB Output is correct
46 Correct 10 ms 12416 KB Output is correct
47 Correct 7 ms 12160 KB Output is correct
48 Correct 10 ms 12416 KB Output is correct
49 Correct 9 ms 12416 KB Output is correct
50 Correct 11 ms 12416 KB Output is correct
51 Correct 9 ms 12416 KB Output is correct
52 Correct 10 ms 12416 KB Output is correct
53 Correct 9 ms 12416 KB Output is correct
54 Correct 9 ms 12288 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 12160 KB Output is correct
2 Correct 8 ms 12160 KB Output is correct
3 Correct 7 ms 12160 KB Output is correct
4 Correct 8 ms 12160 KB Output is correct
5 Correct 8 ms 12136 KB Output is correct
6 Correct 9 ms 12160 KB Output is correct
7 Correct 8 ms 12160 KB Output is correct
8 Correct 8 ms 12160 KB Output is correct
9 Correct 8 ms 12192 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 8 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 7 ms 12160 KB Output is correct
22 Correct 8 ms 12160 KB Output is correct
23 Correct 8 ms 12160 KB Output is correct
24 Correct 8 ms 12160 KB Output is correct
25 Correct 8 ms 12160 KB Output is correct
26 Correct 78 ms 19484 KB Output is correct
27 Correct 102 ms 19576 KB Output is correct
28 Correct 12 ms 12416 KB Output is correct
29 Correct 9 ms 12160 KB Output is correct
30 Correct 8 ms 12160 KB Output is correct
31 Correct 126 ms 20216 KB Output is correct
32 Correct 10 ms 12288 KB Output is correct
33 Correct 148 ms 25212 KB Output is correct
34 Correct 124 ms 19576 KB Output is correct
35 Correct 10 ms 12416 KB Output is correct
36 Correct 120 ms 20600 KB Output is correct
37 Correct 10 ms 12288 KB Output is correct
38 Correct 11 ms 12416 KB Output is correct
39 Correct 73 ms 19408 KB Output is correct
40 Correct 10 ms 12544 KB Output is correct
41 Correct 108 ms 19488 KB Output is correct
42 Correct 143 ms 21368 KB Output is correct
43 Correct 9 ms 12160 KB Output is correct
44 Correct 146 ms 25336 KB Output is correct
45 Correct 128 ms 22460 KB Output is correct
46 Correct 10 ms 12416 KB Output is correct
47 Correct 11 ms 12288 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 83 ms 19440 KB Output is correct
2 Correct 79 ms 21744 KB Output is correct
3 Correct 10 ms 12416 KB Output is correct
4 Correct 10 ms 12416 KB Output is correct
5 Correct 8 ms 12160 KB Output is correct
6 Correct 8 ms 12160 KB Output is correct
7 Correct 9 ms 12288 KB Output is correct
8 Correct 124 ms 21028 KB Output is correct
9 Correct 10 ms 12416 KB Output is correct
10 Correct 114 ms 20412 KB Output is correct
11 Correct 8 ms 12160 KB Output is correct
12 Correct 128 ms 20412 KB Output is correct
13 Correct 127 ms 20980 KB Output is correct
14 Correct 119 ms 21368 KB Output is correct
15 Correct 85 ms 19372 KB Output is correct
16 Correct 10 ms 12416 KB Output is correct
17 Correct 8 ms 12160 KB Output is correct
18 Correct 85 ms 21744 KB Output is correct
19 Correct 139 ms 24512 KB Output is correct
20 Correct 10 ms 12416 KB Output is correct
21 Correct 8 ms 12160 KB Output is correct
22 Correct 79 ms 21360 KB Output is correct
23 Correct 10 ms 12416 KB Output is correct
24 Correct 123 ms 20472 KB Output is correct
25 Correct 125 ms 23416 KB Output is correct
26 Correct 10 ms 12416 KB Output is correct
27 Correct 10 ms 12416 KB Output is correct
28 Correct 9 ms 12416 KB Output is correct
29 Correct 9 ms 12416 KB Output is correct
30 Correct 10 ms 12448 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 12160 KB Output is correct
2 Correct 8 ms 12160 KB Output is correct
3 Correct 7 ms 12160 KB Output is correct
4 Correct 8 ms 12160 KB Output is correct
5 Correct 8 ms 12136 KB Output is correct
6 Correct 9 ms 12160 KB Output is correct
7 Correct 8 ms 12160 KB Output is correct
8 Correct 8 ms 12160 KB Output is correct
9 Correct 8 ms 12192 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 8 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 7 ms 12160 KB Output is correct
22 Correct 8 ms 12160 KB Output is correct
23 Correct 8 ms 12160 KB Output is correct
24 Correct 8 ms 12160 KB Output is correct
25 Correct 8 ms 12160 KB Output is correct
26 Correct 9 ms 12416 KB Output is correct
27 Correct 10 ms 12416 KB Output is correct
28 Correct 10 ms 12544 KB Output is correct
29 Correct 10 ms 12416 KB Output is correct
30 Correct 11 ms 12416 KB Output is correct
31 Correct 8 ms 12160 KB Output is correct
32 Correct 10 ms 12544 KB Output is correct
33 Correct 8 ms 12160 KB Output is correct
34 Correct 9 ms 12288 KB Output is correct
35 Correct 10 ms 12416 KB Output is correct
36 Correct 10 ms 12416 KB Output is correct
37 Correct 10 ms 12416 KB Output is correct
38 Correct 8 ms 12160 KB Output is correct
39 Correct 10 ms 12416 KB Output is correct
40 Correct 10 ms 12288 KB Output is correct
41 Correct 10 ms 12416 KB Output is correct
42 Correct 9 ms 12416 KB Output is correct
43 Correct 9 ms 12544 KB Output is correct
44 Correct 8 ms 12180 KB Output is correct
45 Correct 11 ms 12416 KB Output is correct
46 Correct 10 ms 12416 KB Output is correct
47 Correct 7 ms 12160 KB Output is correct
48 Correct 10 ms 12416 KB Output is correct
49 Correct 9 ms 12416 KB Output is correct
50 Correct 11 ms 12416 KB Output is correct
51 Correct 9 ms 12416 KB Output is correct
52 Correct 10 ms 12416 KB Output is correct
53 Correct 9 ms 12416 KB Output is correct
54 Correct 9 ms 12288 KB Output is correct
55 Correct 8 ms 12160 KB Output is correct
56 Correct 78 ms 19484 KB Output is correct
57 Correct 102 ms 19576 KB Output is correct
58 Correct 12 ms 12416 KB Output is correct
59 Correct 9 ms 12160 KB Output is correct
60 Correct 8 ms 12160 KB Output is correct
61 Correct 126 ms 20216 KB Output is correct
62 Correct 10 ms 12288 KB Output is correct
63 Correct 148 ms 25212 KB Output is correct
64 Correct 124 ms 19576 KB Output is correct
65 Correct 10 ms 12416 KB Output is correct
66 Correct 120 ms 20600 KB Output is correct
67 Correct 10 ms 12288 KB Output is correct
68 Correct 11 ms 12416 KB Output is correct
69 Correct 73 ms 19408 KB Output is correct
70 Correct 10 ms 12544 KB Output is correct
71 Correct 108 ms 19488 KB Output is correct
72 Correct 143 ms 21368 KB Output is correct
73 Correct 9 ms 12160 KB Output is correct
74 Correct 146 ms 25336 KB Output is correct
75 Correct 128 ms 22460 KB Output is correct
76 Correct 10 ms 12416 KB Output is correct
77 Correct 11 ms 12288 KB Output is correct
78 Correct 83 ms 19440 KB Output is correct
79 Correct 79 ms 21744 KB Output is correct
80 Correct 10 ms 12416 KB Output is correct
81 Correct 10 ms 12416 KB Output is correct
82 Correct 8 ms 12160 KB Output is correct
83 Correct 8 ms 12160 KB Output is correct
84 Correct 9 ms 12288 KB Output is correct
85 Correct 124 ms 21028 KB Output is correct
86 Correct 10 ms 12416 KB Output is correct
87 Correct 114 ms 20412 KB Output is correct
88 Correct 8 ms 12160 KB Output is correct
89 Correct 128 ms 20412 KB Output is correct
90 Correct 127 ms 20980 KB Output is correct
91 Correct 119 ms 21368 KB Output is correct
92 Correct 85 ms 19372 KB Output is correct
93 Correct 10 ms 12416 KB Output is correct
94 Correct 8 ms 12160 KB Output is correct
95 Correct 85 ms 21744 KB Output is correct
96 Correct 139 ms 24512 KB Output is correct
97 Correct 10 ms 12416 KB Output is correct
98 Correct 8 ms 12160 KB Output is correct
99 Correct 79 ms 21360 KB Output is correct
100 Correct 10 ms 12416 KB Output is correct
101 Correct 123 ms 20472 KB Output is correct
102 Correct 125 ms 23416 KB Output is correct
103 Correct 10 ms 12416 KB Output is correct
104 Correct 10 ms 12416 KB Output is correct
105 Correct 9 ms 12416 KB Output is correct
106 Correct 9 ms 12416 KB Output is correct
107 Correct 10 ms 12448 KB Output is correct
108 Correct 499 ms 52484 KB Output is correct
109 Correct 904 ms 59448 KB Output is correct
110 Correct 902 ms 68472 KB Output is correct
111 Correct 982 ms 71404 KB Output is correct
112 Correct 895 ms 63608 KB Output is correct
113 Correct 524 ms 54244 KB Output is correct
114 Correct 745 ms 45328 KB Output is correct
115 Correct 750 ms 45344 KB Output is correct
116 Correct 790 ms 49656 KB Output is correct
117 Correct 822 ms 53084 KB Output is correct
118 Correct 764 ms 48232 KB Output is correct
119 Correct 850 ms 53520 KB Output is correct
120 Correct 897 ms 64376 KB Output is correct
121 Correct 946 ms 53344 KB Output is correct
122 Correct 833 ms 51860 KB Output is correct
123 Correct 524 ms 54884 KB Output is correct
124 Correct 936 ms 52792 KB Output is correct