#include <bits/stdc++.h>
using namespace std;
int main()
{
    int n,a[1000],sum = 0,cnt = 0;
    cin>>n;
    for(int i=0;i<=n-1;i++)
    {
        cin>>a[i];
        if(a[i]%3==0)
        {
            sum+=a[i];
            cnt++;
        }
    }
    cout<<sum<<" "<<cnt;
}
```

#include<iostream>
using namespace std;
int main(){
  int n,a,s=0,num=0; 
  cin>>n;
  for(int i=1;i<=n;i++){
    cin>>a;
    if(a%3==0){
	  s=s+a; //累加器 
	  num++; //计数器 
	}
  }
  cout<<s<<" "<<num<<"\n";
  return 0;
}