oj.uz

Submission #71941

# Submission time Handle Problem Language Result Execution time Memory
71941 2018-08-26T01:51:42 Z KLPP Duathlon (APIO18_duathlon) C++14
0 / 100
 196 ms 35656 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;
void DFS(int node,lld dist){
	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;
	ans+=dist*(dist-1);
}
int main(){
	int n,m;
	cin>>n>>m;
	for(int i=0;i<m;i++){
		int x,y;
		cin>>x>>y;
		x--;y--;
		nei[x].push_back(y);
		nei[y].push_back(x);
	}
	ans=0;
	for(int i=0;i<n;i++){
		DP[i]=-1;
		visited[i]=false;
	}
	for(int i=0;i<n;i++){
		if(!visited[i]){
			DFS(i,0);
		}
	}//for(int i=0;i<n;i++)cout<<sumdist[i]<<endl;
	cout<<ans<<endl;

	return 0;	
}

Compilation message

count_triplets.cpp: In function 'void DFS(int, lld)':
count_triplets.cpp:18:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<nei[node].size();i++){
              ~^~~~~~~~~~~~~~~~~
count_triplets.cpp:17:6: warning: unused variable 'totaldist' [-Wunused-variable]
  lld totaldist=0;
      ^~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 23 ms 23800 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 23 ms 23800 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 196 ms 35656 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 24 ms 35656 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 183 ms 35656 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 30 ms 35656 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 177 ms 35656 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 23 ms 23800 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 23 ms 23800 KB Output isn't correct
2 Halted 0 ms 0 KB -