oj.uz

Submission #64796

# Submission time Handle Problem Language Result Execution time Memory
64796 2018-08-05T16:43:28 Z kjp4155 None (KOI18_family) C++17
100 / 100
 753 ms 98900 KB 
#include <stdio.h>
#include <algorithm>
#include <utility>
#include <vector>
using namespace std;

typedef pair<int,int> Pi;

/* Union Find data structure */
int pa[300500], cnt[300500]; 
int find(int x){
	if( pa[x] == x ) return x;
	return pa[x] = find(pa[x]);
}
void uni(int a, int b){
	a = find(a); b = find(b);
	if( a == b ) return;
	pa[a] = b;
	cnt[b] += cnt[a];
}

struct event{
	int t, len, level, node;
	// Smaller event first. Deeper event first. 
	bool operator < (event e){
		if( len != e.len ) return len < e.len;
		return level > e.level;
	}
};

int N[2],K;
vector<int> E[2][300500];
int root[2];
int sz[2][300500], leaf[2][300500], level[2][300500];
int timer = 0;
Pi dfs(int t, int x, int l){
	level[t][x] = l;

	if( 1 <= x && x <= K ){
		timer++;
		leaf[t][x] = x;
		sz[t][x] = 1;
		return {x,1};
	}
	
	for(auto e : E[t][x]){
		Pi res = dfs(t, e, l+1);
		leaf[t][x] = res.first;
		sz[t][x] += res.second; 
	}
	
	return {leaf[t][x], sz[t][x]};
}

int main(){
	scanf("%d%d%d",&N[0],&N[1],&K);

	for(int i=1;i<=K;i++){
		pa[i] = i; cnt[i] = 1;
	}

	for(int t=0;t<2;t++){
		for(int i=1;i<=N[t];i++){
			int x; scanf("%d",&x);
			if( x == 0 ) root[t] = i;
			else E[t][x].push_back(i);
		}
	}

	dfs( 0, root[0] , 0);
	timer = 0;
	dfs( 1, root[1] , 0);

	vector<event> events;

	for(int t=0;t<2;t++){
		for(int i=K+1;i<=N[t];i++){
			events.push_back({t, sz[t][i], level[t][i], i});
		}
	}

	sort(events.begin(), events.end());

	for(auto e : events){
		//printf("[%d,%d] %d %d \n",e.t, e.node, e.len, e.level);
		for(auto x : E[e.t][e.node]){
			uni(leaf[e.t][e.node], leaf[e.t][x]);
		}
		//printf("%d %d\n",cnt[find(leaf[e.t][e.node])], e.len);
		if( cnt[find(leaf[e.t][e.node])] != e.len ){
			printf("NO\n");
			return 0;
		}
	}

	printf("YES\n");
}

Compilation message

family.cpp: In function 'int main()':
family.cpp:56:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d",&N[0],&N[1],&K);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
family.cpp:64:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    int x; scanf("%d",&x);
           ~~~~~^~~~~~~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 14456 KB Output is correct
2 Correct 15 ms 14568 KB Output is correct
3 Correct 15 ms 14644 KB Output is correct
4 Correct 15 ms 14644 KB Output is correct
5 Correct 14 ms 14644 KB Output is correct
6 Correct 15 ms 14676 KB Output is correct
7 Correct 15 ms 14676 KB Output is correct
8 Correct 18 ms 14680 KB Output is correct
9 Correct 15 ms 14860 KB Output is correct
10 Correct 14 ms 14860 KB Output is correct
11 Correct 15 ms 14860 KB Output is correct
12 Correct 15 ms 14884 KB Output is correct
13 Correct 15 ms 14888 KB Output is correct
14 Correct 17 ms 14988 KB Output is correct
15 Correct 16 ms 14988 KB Output is correct
16 Correct 15 ms 14996 KB Output is correct
17 Correct 16 ms 14996 KB Output is correct
18 Correct 15 ms 15004 KB Output is correct
19 Correct 16 ms 15004 KB Output is correct
20 Correct 17 ms 15004 KB Output is correct
21 Correct 16 ms 15004 KB Output is correct
22 Correct 15 ms 15004 KB Output is correct
23 Correct 19 ms 15004 KB Output is correct
24 Correct 18 ms 15004 KB Output is correct
25 Correct 14 ms 15004 KB Output is correct
26 Correct 20 ms 15004 KB Output is correct
27 Correct 22 ms 15004 KB Output is correct
28 Correct 22 ms 15004 KB Output is correct
29 Correct 18 ms 15004 KB Output is correct
30 Correct 15 ms 15004 KB Output is correct

Subtask #2
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 14456 KB Output is correct
2 Correct 15 ms 14568 KB Output is correct
3 Correct 15 ms 14644 KB Output is correct
4 Correct 15 ms 14644 KB Output is correct
5 Correct 14 ms 14644 KB Output is correct
6 Correct 15 ms 14676 KB Output is correct
7 Correct 15 ms 14676 KB Output is correct
8 Correct 18 ms 14680 KB Output is correct
9 Correct 15 ms 14860 KB Output is correct
10 Correct 14 ms 14860 KB Output is correct
11 Correct 15 ms 14860 KB Output is correct
12 Correct 15 ms 14884 KB Output is correct
13 Correct 15 ms 14888 KB Output is correct
14 Correct 17 ms 14988 KB Output is correct
15 Correct 16 ms 14988 KB Output is correct
16 Correct 15 ms 14996 KB Output is correct
17 Correct 16 ms 14996 KB Output is correct
18 Correct 15 ms 15004 KB Output is correct
19 Correct 16 ms 15004 KB Output is correct
20 Correct 17 ms 15004 KB Output is correct
21 Correct 16 ms 15004 KB Output is correct
22 Correct 15 ms 15004 KB Output is correct
23 Correct 19 ms 15004 KB Output is correct
24 Correct 18 ms 15004 KB Output is correct
25 Correct 14 ms 15004 KB Output is correct
26 Correct 20 ms 15004 KB Output is correct
27 Correct 22 ms 15004 KB Output is correct
28 Correct 22 ms 15004 KB Output is correct
29 Correct 18 ms 15004 KB Output is correct
30 Correct 15 ms 15004 KB Output is correct
31 Correct 17 ms 15004 KB Output is correct
32 Correct 15 ms 15004 KB Output is correct
33 Correct 14 ms 15004 KB Output is correct
34 Correct 14 ms 15004 KB Output is correct
35 Correct 15 ms 15004 KB Output is correct
36 Correct 15 ms 15004 KB Output is correct
37 Correct 15 ms 15004 KB Output is correct
38 Correct 15 ms 15004 KB Output is correct
39 Correct 15 ms 15004 KB Output is correct
40 Correct 15 ms 15004 KB Output is correct
41 Correct 20 ms 15004 KB Output is correct
42 Correct 15 ms 15004 KB Output is correct
43 Correct 16 ms 15104 KB Output is correct
44 Correct 14 ms 15104 KB Output is correct
45 Correct 15 ms 15104 KB Output is correct
46 Correct 15 ms 15104 KB Output is correct
47 Correct 18 ms 15104 KB Output is correct
48 Correct 15 ms 15104 KB Output is correct
49 Correct 15 ms 15104 KB Output is correct
50 Correct 16 ms 15104 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 14456 KB Output is correct
2 Correct 15 ms 14568 KB Output is correct
3 Correct 15 ms 14644 KB Output is correct
4 Correct 15 ms 14644 KB Output is correct
5 Correct 14 ms 14644 KB Output is correct
6 Correct 15 ms 14676 KB Output is correct
7 Correct 15 ms 14676 KB Output is correct
8 Correct 18 ms 14680 KB Output is correct
9 Correct 15 ms 14860 KB Output is correct
10 Correct 14 ms 14860 KB Output is correct
11 Correct 15 ms 14860 KB Output is correct
12 Correct 15 ms 14884 KB Output is correct
13 Correct 15 ms 14888 KB Output is correct
14 Correct 17 ms 14988 KB Output is correct
15 Correct 16 ms 14988 KB Output is correct
16 Correct 15 ms 14996 KB Output is correct
17 Correct 16 ms 14996 KB Output is correct
18 Correct 15 ms 15004 KB Output is correct
19 Correct 16 ms 15004 KB Output is correct
20 Correct 17 ms 15004 KB Output is correct
21 Correct 16 ms 15004 KB Output is correct
22 Correct 15 ms 15004 KB Output is correct
23 Correct 19 ms 15004 KB Output is correct
24 Correct 18 ms 15004 KB Output is correct
25 Correct 14 ms 15004 KB Output is correct
26 Correct 20 ms 15004 KB Output is correct
27 Correct 22 ms 15004 KB Output is correct
28 Correct 22 ms 15004 KB Output is correct
29 Correct 18 ms 15004 KB Output is correct
30 Correct 15 ms 15004 KB Output is correct
31 Correct 17 ms 15004 KB Output is correct
32 Correct 15 ms 15004 KB Output is correct
33 Correct 14 ms 15004 KB Output is correct
34 Correct 14 ms 15004 KB Output is correct
35 Correct 15 ms 15004 KB Output is correct
36 Correct 15 ms 15004 KB Output is correct
37 Correct 15 ms 15004 KB Output is correct
38 Correct 15 ms 15004 KB Output is correct
39 Correct 15 ms 15004 KB Output is correct
40 Correct 15 ms 15004 KB Output is correct
41 Correct 20 ms 15004 KB Output is correct
42 Correct 15 ms 15004 KB Output is correct
43 Correct 16 ms 15104 KB Output is correct
44 Correct 14 ms 15104 KB Output is correct
45 Correct 15 ms 15104 KB Output is correct
46 Correct 15 ms 15104 KB Output is correct
47 Correct 18 ms 15104 KB Output is correct
48 Correct 15 ms 15104 KB Output is correct
49 Correct 15 ms 15104 KB Output is correct
50 Correct 16 ms 15104 KB Output is correct
51 Correct 21 ms 15292 KB Output is correct
52 Correct 19 ms 15444 KB Output is correct
53 Correct 18 ms 15640 KB Output is correct
54 Correct 18 ms 15640 KB Output is correct
55 Correct 18 ms 15640 KB Output is correct
56 Correct 18 ms 15640 KB Output is correct
57 Correct 17 ms 15640 KB Output is correct
58 Correct 20 ms 15648 KB Output is correct
59 Correct 18 ms 15692 KB Output is correct
60 Correct 17 ms 15752 KB Output is correct
61 Correct 19 ms 16188 KB Output is correct
62 Correct 20 ms 16240 KB Output is correct
63 Correct 25 ms 16240 KB Output is correct
64 Correct 19 ms 16240 KB Output is correct
65 Correct 16 ms 16240 KB Output is correct
66 Correct 20 ms 16240 KB Output is correct
67 Correct 20 ms 16240 KB Output is correct
68 Correct 18 ms 16340 KB Output is correct
69 Correct 19 ms 16340 KB Output is correct
70 Correct 20 ms 16340 KB Output is correct

Subtask #4
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 14456 KB Output is correct
2 Correct 15 ms 14568 KB Output is correct
3 Correct 15 ms 14644 KB Output is correct
4 Correct 15 ms 14644 KB Output is correct
5 Correct 14 ms 14644 KB Output is correct
6 Correct 15 ms 14676 KB Output is correct
7 Correct 15 ms 14676 KB Output is correct
8 Correct 18 ms 14680 KB Output is correct
9 Correct 15 ms 14860 KB Output is correct
10 Correct 14 ms 14860 KB Output is correct
11 Correct 15 ms 14860 KB Output is correct
12 Correct 15 ms 14884 KB Output is correct
13 Correct 15 ms 14888 KB Output is correct
14 Correct 17 ms 14988 KB Output is correct
15 Correct 16 ms 14988 KB Output is correct
16 Correct 15 ms 14996 KB Output is correct
17 Correct 16 ms 14996 KB Output is correct
18 Correct 15 ms 15004 KB Output is correct
19 Correct 16 ms 15004 KB Output is correct
20 Correct 17 ms 15004 KB Output is correct
21 Correct 16 ms 15004 KB Output is correct
22 Correct 15 ms 15004 KB Output is correct
23 Correct 19 ms 15004 KB Output is correct
24 Correct 18 ms 15004 KB Output is correct
25 Correct 14 ms 15004 KB Output is correct
26 Correct 20 ms 15004 KB Output is correct
27 Correct 22 ms 15004 KB Output is correct
28 Correct 22 ms 15004 KB Output is correct
29 Correct 18 ms 15004 KB Output is correct
30 Correct 15 ms 15004 KB Output is correct
31 Correct 17 ms 15004 KB Output is correct
32 Correct 15 ms 15004 KB Output is correct
33 Correct 14 ms 15004 KB Output is correct
34 Correct 14 ms 15004 KB Output is correct
35 Correct 15 ms 15004 KB Output is correct
36 Correct 15 ms 15004 KB Output is correct
37 Correct 15 ms 15004 KB Output is correct
38 Correct 15 ms 15004 KB Output is correct
39 Correct 15 ms 15004 KB Output is correct
40 Correct 15 ms 15004 KB Output is correct
41 Correct 20 ms 15004 KB Output is correct
42 Correct 15 ms 15004 KB Output is correct
43 Correct 16 ms 15104 KB Output is correct
44 Correct 14 ms 15104 KB Output is correct
45 Correct 15 ms 15104 KB Output is correct
46 Correct 15 ms 15104 KB Output is correct
47 Correct 18 ms 15104 KB Output is correct
48 Correct 15 ms 15104 KB Output is correct
49 Correct 15 ms 15104 KB Output is correct
50 Correct 16 ms 15104 KB Output is correct
51 Correct 21 ms 15292 KB Output is correct
52 Correct 19 ms 15444 KB Output is correct
53 Correct 18 ms 15640 KB Output is correct
54 Correct 18 ms 15640 KB Output is correct
55 Correct 18 ms 15640 KB Output is correct
56 Correct 18 ms 15640 KB Output is correct
57 Correct 17 ms 15640 KB Output is correct
58 Correct 20 ms 15648 KB Output is correct
59 Correct 18 ms 15692 KB Output is correct
60 Correct 17 ms 15752 KB Output is correct
61 Correct 19 ms 16188 KB Output is correct
62 Correct 20 ms 16240 KB Output is correct
63 Correct 25 ms 16240 KB Output is correct
64 Correct 19 ms 16240 KB Output is correct
65 Correct 16 ms 16240 KB Output is correct
66 Correct 20 ms 16240 KB Output is correct
67 Correct 20 ms 16240 KB Output is correct
68 Correct 18 ms 16340 KB Output is correct
69 Correct 19 ms 16340 KB Output is correct
70 Correct 20 ms 16340 KB Output is correct
71 Correct 88 ms 22092 KB Output is correct
72 Correct 94 ms 22092 KB Output is correct
73 Correct 57 ms 22092 KB Output is correct
74 Correct 88 ms 25568 KB Output is correct
75 Correct 122 ms 25612 KB Output is correct
76 Correct 694 ms 73068 KB Output is correct
77 Correct 753 ms 73068 KB Output is correct
78 Correct 411 ms 73068 KB Output is correct
79 Correct 601 ms 73068 KB Output is correct
80 Correct 671 ms 77324 KB Output is correct
81 Correct 69 ms 77324 KB Output is correct
82 Correct 68 ms 77324 KB Output is correct
83 Correct 53 ms 77324 KB Output is correct
84 Correct 95 ms 77324 KB Output is correct
85 Correct 97 ms 77324 KB Output is correct
86 Correct 443 ms 77324 KB Output is correct
87 Correct 479 ms 80784 KB Output is correct
88 Correct 374 ms 80784 KB Output is correct
89 Correct 536 ms 89092 KB Output is correct
90 Correct 672 ms 98900 KB Output is correct