oj.uz

Submission #72203

# Submission time Handle Problem Language Result Execution time Memory
72203 2018-08-26T05:56:15 Z KLPP Duathlon (APIO18_duathlon) C++14
23 / 100
 265 ms 31148 KB 
#include<iostream>
#include<stdio.h>
#include<vector>
#include<queue>
#include<algorithm>

using namespace std;
typedef long long int lld;
lld DP[1000000];
bool visited[1000000];
vector<int>nei[1000000];
lld ans;
bool visited2[1000000];
void DFS(int node,lld dist){//cout<<node+1<<" "<<dist<<endl;
	visited[node]=true;
	lld sum=0;
	//lld square=0;
	//lld totaldist=0;
	for(int i=0;i<nei[node].size();i++){
		int v=nei[node][i];
		if(!visited[v]){
			DFS(v,dist+1);
			sum+=DP[v];
			//square+=DP[v]*DP[v];
		}
	}
	DP[node]=sum+1;
	//ans+=sum*sum-square;
	//cout<<sum*sum-square<<" "<<node+1<<endl;
	//ans+=dist*(dist-1);
}
void DFS2(int node,lld componentsize){
	visited2[node]=true;
	lld sq=componentsize-DP[node];
	sq*=sq;
	for(int i=0;i<nei[node].size();i++){
		int v=nei[node][i];
		if(!visited2[v]){
			DFS2(v,componentsize);
			sq+=DP[v]*DP[v];
		}		
	}
	ans+=(componentsize-1)*(componentsize-1)-sq;
	//cout<<(componentsize-1)*(componentsize-1)-sq<<" "<<node+1<<endl;
}
int main(){
	int n,m;
	cin>>n>>m;
	int edges[m][2];
	
	for(int i=0;i<m;i++){
		int x,y;
		cin>>x>>y;
		x--;y--;
		edges[i][0]=x;
		edges[i][1]=y;
		nei[x].push_back(y);
		nei[y].push_back(x);
	}
	//for(int i=0;i<m;i++)cout<<edges[i][0]<<" "<<edges[i][1]<<endl;
	bool enter=true;
	for(int i=0;i<n;i++){
		if(nei[i].size()>2)enter=false;
	}
	if(enter){
	int component[n];
	
	for(int i=0;i<n;i++){
		component[i]=-1;
		
	}
	lld ans=0;
	int color=0;
	for(int i=0;i<n;i++){
		if(component[i]==-1){
			component[i]=color;
			
			queue<int>q;
			q.push(i);
			bool cycle=false;
			lld size=0;
			while(!q.empty()){size++;
				int u=q.front();q.pop();
				//cout<<u<<" ";
				for(int j=0;j<nei[u].size();j++){
					int v=nei[u][j];
					if(component[v]==-1){
						component[v]=color;
						q.push(v);
						
					}
				}
			}
			color++;//cout<<endl;
			int edges=0;
			for(int i=0;i<n;i++)edges+=nei[i].size();
			if(edges==2*size)cycle=true;
			//cout<<cycle<<endl;
			
			if(cycle){
				ans+=size*(size-1)*(size-2);
			}else{
				ans+=size*(size-1)*(size-2)/3;
			}
		}
	}
	cout<<ans<<endl;
	return 0;
	}
	if(n>50){
	ans=0;
	for(int i=0;i<n;i++){
		DP[i]=-1;
		visited[i]=false;
		visited2[i]=false;
	}
	for(int i=0;i<n;i++){
		if(!visited[i]){
			DFS(i,0);
			DFS2(i,DP[i]);
		}
	}//for(int i=0;i<n;i++)cout<<DP[i]<<" "<<i+1<<endl;
	cout<<ans<<endl;
	return 0;
	}
	if(n<=50){
	int component[n][n];
	vector<int>graph[n];
	for(int node=0;node<n;node++){
		for(int j=0;j<m;j++){
			if(edges[j][0]!=node && edges[j][1]!=node){//cout<<edges[j][0]<<" "<<edges[j][1]<<" "<<j<<endl;
				graph[edges[j][0]].push_back(edges[j][1]);
				graph[edges[j][1]].push_back(edges[j][0]);
				//cout<<edges[j][0]<<" "<<edges[j][1]<<" "<<j<<endl;
			}
		}
		int color=0;
		for(int i=0;i<n;i++)component[node][i]=-1;
		for(int i=0;i<n;i++){
			if(component[node][i]==-1){
				component[node][i]=color;
				queue<int>q;
				q.push(i);
				while(!q.empty()){
					int u=q.front();q.pop();
					//cout<<u<<" ";
					for(int j=0;j<graph[u].size();j++){
						int v=graph[u][j];
						if(component[node][v]==-1){
							component[node][v]=color;
							q.push(v);
						}
					}
				}
				color++;//cout<<endl;
			}
		}
		for(int i=0;i<n;i++)graph[i].clear();
	}
	int cnt=0;
	for(int s=0;s<n;s++){
		for(int f=0;f<n;f++){
			for(int c=0;c<n;c++){
				if(s!=c && s!=f && f!=c){
					bool b=true;
					for(int i=0;i<n;i++){
						if(i!=c){
						if(component[i][c]!=component[i][s] && component[i][c]!=component[i][f]){
							b=false;
						}
						}
					}cnt+=b;
				}
			}
		}
	}
	cout<<cnt<<endl;
	
	return 0;	
	}
}

Compilation message

count_triplets.cpp: In function 'void DFS(int, lld)':
count_triplets.cpp:19:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<nei[node].size();i++){
              ~^~~~~~~~~~~~~~~~~
count_triplets.cpp: In function 'void DFS2(int, lld)':
count_triplets.cpp:36:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<nei[node].size();i++){
              ~^~~~~~~~~~~~~~~~~
count_triplets.cpp: In function 'int main()':
count_triplets.cpp:85:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int j=0;j<nei[u].size();j++){
                 ~^~~~~~~~~~~~~~
count_triplets.cpp:147:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      for(int j=0;j<graph[u].size();j++){
                  ~^~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 23800 KB Output is correct
2 Correct 26 ms 23908 KB Output is correct
3 Correct 25 ms 23908 KB Output is correct
4 Correct 24 ms 24012 KB Output is correct
5 Correct 27 ms 24012 KB Output is correct
6 Correct 28 ms 24012 KB Output is correct
7 Correct 24 ms 24012 KB Output is correct
8 Correct 25 ms 24012 KB Output is correct
9 Correct 25 ms 24012 KB Output is correct
10 Correct 28 ms 24012 KB Output is correct
11 Correct 24 ms 24012 KB Output is correct
12 Correct 26 ms 24012 KB Output is correct
13 Correct 25 ms 24012 KB Output is correct
14 Correct 26 ms 24096 KB Output is correct
15 Correct 25 ms 24096 KB Output is correct
16 Correct 25 ms 24096 KB Output is correct
17 Correct 22 ms 24096 KB Output is correct
18 Correct 30 ms 24096 KB Output is correct
19 Correct 33 ms 24096 KB Output is correct
20 Incorrect 22 ms 24096 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 23800 KB Output is correct
2 Correct 26 ms 23908 KB Output is correct
3 Correct 25 ms 23908 KB Output is correct
4 Correct 24 ms 24012 KB Output is correct
5 Correct 27 ms 24012 KB Output is correct
6 Correct 28 ms 24012 KB Output is correct
7 Correct 24 ms 24012 KB Output is correct
8 Correct 25 ms 24012 KB Output is correct
9 Correct 25 ms 24012 KB Output is correct
10 Correct 28 ms 24012 KB Output is correct
11 Correct 24 ms 24012 KB Output is correct
12 Correct 26 ms 24012 KB Output is correct
13 Correct 25 ms 24012 KB Output is correct
14 Correct 26 ms 24096 KB Output is correct
15 Correct 25 ms 24096 KB Output is correct
16 Correct 25 ms 24096 KB Output is correct
17 Correct 22 ms 24096 KB Output is correct
18 Correct 30 ms 24096 KB Output is correct
19 Correct 33 ms 24096 KB Output is correct
20 Incorrect 22 ms 24096 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 185 ms 28396 KB Output is correct
2 Correct 168 ms 28520 KB Output is correct
3 Incorrect 208 ms 28520 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 28520 KB Output is correct
2 Correct 26 ms 28520 KB Output is correct
3 Correct 29 ms 28520 KB Output is correct
4 Correct 26 ms 28520 KB Output is correct
5 Correct 25 ms 28520 KB Output is correct
6 Correct 25 ms 28520 KB Output is correct
7 Correct 26 ms 28520 KB Output is correct
8 Correct 28 ms 28520 KB Output is correct
9 Correct 26 ms 28520 KB Output is correct
10 Correct 27 ms 28520 KB Output is correct
11 Correct 26 ms 28520 KB Output is correct
12 Correct 27 ms 28520 KB Output is correct
13 Correct 28 ms 28520 KB Output is correct
14 Correct 25 ms 28520 KB Output is correct
15 Correct 26 ms 28520 KB Output is correct
16 Correct 26 ms 28520 KB Output is correct
17 Correct 24 ms 28520 KB Output is correct
18 Correct 25 ms 28520 KB Output is correct
19 Correct 27 ms 28520 KB Output is correct
20 Correct 24 ms 28520 KB Output is correct

Subtask #5
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 211 ms 29164 KB Output is correct
2 Correct 201 ms 29164 KB Output is correct
3 Correct 242 ms 29164 KB Output is correct
4 Correct 179 ms 29164 KB Output is correct
5 Correct 198 ms 29164 KB Output is correct
6 Correct 157 ms 29164 KB Output is correct
7 Correct 245 ms 31148 KB Output is correct
8 Correct 265 ms 31148 KB Output is correct
9 Correct 235 ms 31148 KB Output is correct
10 Correct 207 ms 31148 KB Output is correct
11 Correct 181 ms 31148 KB Output is correct
12 Correct 219 ms 31148 KB Output is correct
13 Correct 206 ms 31148 KB Output is correct
14 Correct 158 ms 31148 KB Output is correct
15 Correct 154 ms 31148 KB Output is correct
16 Correct 110 ms 31148 KB Output is correct
17 Correct 153 ms 31148 KB Output is correct
18 Correct 144 ms 31148 KB Output is correct
19 Correct 142 ms 31148 KB Output is correct
20 Correct 141 ms 31148 KB Output is correct

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 31148 KB Output is correct
2 Correct 25 ms 31148 KB Output is correct
3 Incorrect 29 ms 31148 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 180 ms 31148 KB Output is correct
2 Correct 186 ms 31148 KB Output is correct
3 Incorrect 238 ms 31148 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 23800 KB Output is correct
2 Correct 26 ms 23908 KB Output is correct
3 Correct 25 ms 23908 KB Output is correct
4 Correct 24 ms 24012 KB Output is correct
5 Correct 27 ms 24012 KB Output is correct
6 Correct 28 ms 24012 KB Output is correct
7 Correct 24 ms 24012 KB Output is correct
8 Correct 25 ms 24012 KB Output is correct
9 Correct 25 ms 24012 KB Output is correct
10 Correct 28 ms 24012 KB Output is correct
11 Correct 24 ms 24012 KB Output is correct
12 Correct 26 ms 24012 KB Output is correct
13 Correct 25 ms 24012 KB Output is correct
14 Correct 26 ms 24096 KB Output is correct
15 Correct 25 ms 24096 KB Output is correct
16 Correct 25 ms 24096 KB Output is correct
17 Correct 22 ms 24096 KB Output is correct
18 Correct 30 ms 24096 KB Output is correct
19 Correct 33 ms 24096 KB Output is correct
20 Incorrect 22 ms 24096 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 23800 KB Output is correct
2 Correct 26 ms 23908 KB Output is correct
3 Correct 25 ms 23908 KB Output is correct
4 Correct 24 ms 24012 KB Output is correct
5 Correct 27 ms 24012 KB Output is correct
6 Correct 28 ms 24012 KB Output is correct
7 Correct 24 ms 24012 KB Output is correct
8 Correct 25 ms 24012 KB Output is correct
9 Correct 25 ms 24012 KB Output is correct
10 Correct 28 ms 24012 KB Output is correct
11 Correct 24 ms 24012 KB Output is correct
12 Correct 26 ms 24012 KB Output is correct
13 Correct 25 ms 24012 KB Output is correct
14 Correct 26 ms 24096 KB Output is correct
15 Correct 25 ms 24096 KB Output is correct
16 Correct 25 ms 24096 KB Output is correct
17 Correct 22 ms 24096 KB Output is correct
18 Correct 30 ms 24096 KB Output is correct
19 Correct 33 ms 24096 KB Output is correct
20 Incorrect 22 ms 24096 KB Output isn't correct
21 Halted 0 ms 0 KB -