oj.uz

Submission #172175

# Submission time Handle Problem Language Result Execution time Memory
172175 2019-12-31T13:03:49 Z GioChkhaidze Hard route (IZhO17_road) C++14
100 / 100
 1195 ms 112860 KB 
#include <bits/stdc++.h>
#define ll long long
#define F first
#define S second
using namespace std;
const int N=5e5+5;
ll n;
vector < ll > v[N];
pair < ll , ll > D[N],T[N],ans;
void Dfs(int x,int p) {
	for (int i=0; i<v[x].size(); i++) 
		if (v[x][i]==p) { swap(v[x][i],v[x][v[x].size()-1]); v[x].pop_back(); break; }
	
	for (int i=0; i<v[x].size(); i++) {
		int to=v[x][i];
		Dfs(to,x);
		if (D[to].F>D[x].F) D[x]=D[to];
			else
		if (D[to].F==D[x].F) D[x].S+=D[to].S; 
	}
	
	D[x].F++;
	if (!v[x].size()) D[x].S=1;
}
 
void Ufs(int x) {
	pair < ll , ll > M1,M2;
	M1.F=M1.S=M2.F=M2.S=0; 
	M1=D[x],M1.F--;
	
	for (int i=0; i<v[x].size(); i++) {
		int to=v[x][i];
		if (M1.F==D[to].F) continue;
		if (M2.F<D[to].F) M2=D[to];
			else 
		if (M2.F==D[to].F) M2.S+=D[to].S;
	}
	
	if (x==1) T[x].S=1;
 
	for (int i=0; i<v[x].size(); i++) {
		int to=v[x][i];
		if (M1.F==D[to].F && M1.S==D[to].S) T[to]=M2;
			else
		if (M1.F==D[to].F && M1.S>D[to].S) T[to].F=M1.F,T[to].S=M1.S-D[to].S;
			else T[to]=M1;
			
		if (T[x].F>T[to].F) T[to]=T[x];
			else
		if (T[x].F==T[to].F) T[to].S+=T[x].S;	
		T[to].F++;
		Ufs(to);
	}
}
 
void Df(int x) {
	vector < pair < ll , ll > > s;
	s.push_back(T[x]);
	for (int i=0; i<v[x].size(); i++) 
		s.push_back(D[v[x][i]]);
	
	sort(s.begin(),s.end());
	reverse(s.begin(),s.end());
	
	if (s.size()>=3 && s[2].F>0) {
		ll g=s[0].F*(s[1].F+s[2].F),tot=0,sum=0,S3=0;
			
		for (int i=2; i<s.size(); i++) 
			if (s[2].F==s[i].F) S3+=s[i].S;	
			
		if (s[0].F==s[1].F && s[1].F==s[2].F) {
			for (int i=0; i<s.size(); i++)
				if (s[0].F==s[i].F) tot+=s[i].S*sum,sum+=s[i].S;
		}
			else
		if (s[0].F==s[1].F) {
			tot=s[0].S*S3+s[1].S*S3;
		}
			else 
		if (s[1].F==s[2].F) {
			for (int i=1; i<s.size(); i++)
				if (s[1].F==s[i].F) tot+=s[i].S*sum,sum+=s[i].S;
		}
			else tot=s[1].S*S3;	
		
		if (ans.F<g) ans.F=g,ans.S=tot;
			else 
		if (ans.F==g) ans.S+=tot;
	} 
	
	for (int i=0; i<v[x].size(); i++)
		Df(v[x][i]);
}
 
main () { 
	scanf("%d",&n);
	
	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);
	}
	
	Dfs(1,1);
	Ufs(1);
	Df(1);

	if (!ans.F) ans.S=1;
	printf("%lld %lld \n",ans.F,ans.S);
}

Compilation message

road.cpp: In function 'void Dfs(int, int)':
road.cpp:11:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<v[x].size(); i++) 
                ~^~~~~~~~~~~~
road.cpp:14:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<v[x].size(); i++) {
                ~^~~~~~~~~~~~
road.cpp: In function 'void Ufs(int)':
road.cpp:31:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<v[x].size(); i++) {
                ~^~~~~~~~~~~~
road.cpp:41:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<v[x].size(); i++) {
                ~^~~~~~~~~~~~
road.cpp: In function 'void Df(int)':
road.cpp:59:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<v[x].size(); i++) 
                ~^~~~~~~~~~~~
road.cpp:68:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i=2; i<s.size(); i++) 
                 ~^~~~~~~~~
road.cpp:72:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int i=0; i<s.size(); i++)
                  ~^~~~~~~~~
road.cpp:81:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int i=1; i<s.size(); i++)
                  ~^~~~~~~~~
road.cpp:91:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<v[x].size(); i++)
                ~^~~~~~~~~~~~
road.cpp: At global scope:
road.cpp:95:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main () { 
       ^
road.cpp: In function 'int main()':
road.cpp:96:15: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
  scanf("%d",&n);
             ~~^
road.cpp:96:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
road.cpp:100:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&a,&b);
   ~~~~~^~~~~~~~~~~~~~

Subtask #1
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12152 KB Output is correct
2 Correct 13 ms 12152 KB Output is correct
3 Correct 12 ms 12024 KB Output is correct
4 Correct 12 ms 12024 KB Output is correct
5 Correct 13 ms 12024 KB Output is correct
6 Correct 13 ms 12156 KB Output is correct
7 Correct 13 ms 12152 KB Output is correct
8 Correct 13 ms 12024 KB Output is correct
9 Correct 13 ms 12152 KB Output is correct
10 Correct 12 ms 12028 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 13 ms 12152 KB Output is correct
13 Correct 13 ms 12024 KB Output is correct
14 Correct 13 ms 12024 KB Output is correct
15 Correct 13 ms 12152 KB Output is correct
16 Correct 13 ms 12024 KB Output is correct
17 Correct 13 ms 12152 KB Output is correct
18 Correct 12 ms 12024 KB Output is correct
19 Correct 13 ms 12024 KB Output is correct
20 Correct 12 ms 12024 KB Output is correct
21 Correct 12 ms 12024 KB Output is correct
22 Correct 13 ms 12152 KB Output is correct
23 Correct 12 ms 12152 KB Output is correct
24 Correct 13 ms 12024 KB Output is correct

Subtask #2
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12152 KB Output is correct
2 Correct 13 ms 12152 KB Output is correct
3 Correct 12 ms 12024 KB Output is correct
4 Correct 12 ms 12024 KB Output is correct
5 Correct 13 ms 12024 KB Output is correct
6 Correct 13 ms 12156 KB Output is correct
7 Correct 13 ms 12152 KB Output is correct
8 Correct 13 ms 12024 KB Output is correct
9 Correct 13 ms 12152 KB Output is correct
10 Correct 12 ms 12028 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 13 ms 12152 KB Output is correct
13 Correct 13 ms 12024 KB Output is correct
14 Correct 13 ms 12024 KB Output is correct
15 Correct 13 ms 12152 KB Output is correct
16 Correct 13 ms 12024 KB Output is correct
17 Correct 13 ms 12152 KB Output is correct
18 Correct 12 ms 12024 KB Output is correct
19 Correct 13 ms 12024 KB Output is correct
20 Correct 12 ms 12024 KB Output is correct
21 Correct 12 ms 12024 KB Output is correct
22 Correct 13 ms 12152 KB Output is correct
23 Correct 12 ms 12152 KB Output is correct
24 Correct 13 ms 12024 KB Output is correct
25 Correct 16 ms 12664 KB Output is correct
26 Correct 16 ms 12792 KB Output is correct
27 Correct 16 ms 12792 KB Output is correct
28 Correct 16 ms 12792 KB Output is correct
29 Correct 16 ms 12712 KB Output is correct
30 Correct 17 ms 12792 KB Output is correct
31 Correct 16 ms 12792 KB Output is correct
32 Correct 16 ms 12792 KB Output is correct
33 Correct 16 ms 12664 KB Output is correct
34 Correct 16 ms 12792 KB Output is correct
35 Correct 16 ms 12792 KB Output is correct
36 Correct 16 ms 12792 KB Output is correct
37 Correct 17 ms 12792 KB Output is correct
38 Correct 17 ms 13048 KB Output is correct
39 Correct 17 ms 12664 KB Output is correct
40 Correct 16 ms 12536 KB Output is correct
41 Correct 16 ms 12408 KB Output is correct
42 Correct 16 ms 12480 KB Output is correct
43 Correct 16 ms 12408 KB Output is correct
44 Correct 15 ms 12408 KB Output is correct
45 Correct 15 ms 12408 KB Output is correct
46 Correct 15 ms 12408 KB Output is correct
47 Correct 16 ms 12536 KB Output is correct
48 Correct 16 ms 12664 KB Output is correct

Subtask #3
48.0 / 48.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12152 KB Output is correct
2 Correct 13 ms 12152 KB Output is correct
3 Correct 12 ms 12024 KB Output is correct
4 Correct 12 ms 12024 KB Output is correct
5 Correct 13 ms 12024 KB Output is correct
6 Correct 13 ms 12156 KB Output is correct
7 Correct 13 ms 12152 KB Output is correct
8 Correct 13 ms 12024 KB Output is correct
9 Correct 13 ms 12152 KB Output is correct
10 Correct 12 ms 12028 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 13 ms 12152 KB Output is correct
13 Correct 13 ms 12024 KB Output is correct
14 Correct 13 ms 12024 KB Output is correct
15 Correct 13 ms 12152 KB Output is correct
16 Correct 13 ms 12024 KB Output is correct
17 Correct 13 ms 12152 KB Output is correct
18 Correct 12 ms 12024 KB Output is correct
19 Correct 13 ms 12024 KB Output is correct
20 Correct 12 ms 12024 KB Output is correct
21 Correct 12 ms 12024 KB Output is correct
22 Correct 13 ms 12152 KB Output is correct
23 Correct 12 ms 12152 KB Output is correct
24 Correct 13 ms 12024 KB Output is correct
25 Correct 16 ms 12664 KB Output is correct
26 Correct 16 ms 12792 KB Output is correct
27 Correct 16 ms 12792 KB Output is correct
28 Correct 16 ms 12792 KB Output is correct
29 Correct 16 ms 12712 KB Output is correct
30 Correct 17 ms 12792 KB Output is correct
31 Correct 16 ms 12792 KB Output is correct
32 Correct 16 ms 12792 KB Output is correct
33 Correct 16 ms 12664 KB Output is correct
34 Correct 16 ms 12792 KB Output is correct
35 Correct 16 ms 12792 KB Output is correct
36 Correct 16 ms 12792 KB Output is correct
37 Correct 17 ms 12792 KB Output is correct
38 Correct 17 ms 13048 KB Output is correct
39 Correct 17 ms 12664 KB Output is correct
40 Correct 16 ms 12536 KB Output is correct
41 Correct 16 ms 12408 KB Output is correct
42 Correct 16 ms 12480 KB Output is correct
43 Correct 16 ms 12408 KB Output is correct
44 Correct 15 ms 12408 KB Output is correct
45 Correct 15 ms 12408 KB Output is correct
46 Correct 15 ms 12408 KB Output is correct
47 Correct 16 ms 12536 KB Output is correct
48 Correct 16 ms 12664 KB Output is correct
49 Correct 756 ms 75288 KB Output is correct
50 Correct 769 ms 79564 KB Output is correct
51 Correct 751 ms 83364 KB Output is correct
52 Correct 743 ms 70220 KB Output is correct
53 Correct 784 ms 86364 KB Output is correct
54 Correct 779 ms 91516 KB Output is correct
55 Correct 771 ms 78720 KB Output is correct
56 Correct 779 ms 84348 KB Output is correct
57 Correct 728 ms 84728 KB Output is correct
58 Correct 709 ms 80120 KB Output is correct
59 Correct 762 ms 79772 KB Output is correct
60 Correct 720 ms 77440 KB Output is correct
61 Correct 1031 ms 112860 KB Output is correct
62 Correct 1195 ms 101732 KB Output is correct
63 Correct 1012 ms 68448 KB Output is correct
64 Correct 978 ms 60732 KB Output is correct
65 Correct 960 ms 55772 KB Output is correct
66 Correct 933 ms 53240 KB Output is correct
67 Correct 949 ms 51448 KB Output is correct
68 Correct 947 ms 51104 KB Output is correct
69 Correct 928 ms 50808 KB Output is correct
70 Correct 935 ms 50680 KB Output is correct
71 Correct 913 ms 50424 KB Output is correct
72 Correct 978 ms 50680 KB Output is correct
73 Correct 932 ms 51056 KB Output is correct
74 Correct 916 ms 51488 KB Output is correct
75 Correct 891 ms 52268 KB Output is correct
76 Correct 850 ms 53480 KB Output is correct
77 Correct 726 ms 56544 KB Output is correct
78 Correct 520 ms 62880 KB Output is correct