/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.stream.*;
 
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		int [] [] arr = {{1,2,-3},{11,-22,33},{111,222,-333}};
		int n = arr.length;
 
		int q = IntStream.range(0, n)
                         .flatMap(p -> Arrays.stream(arr[p]))
                         .filter(s -> s>0)
                         .sum();
        System.out.println("summa of positive = "+q);         
 
	}
}

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