©TCP-tryJAVA

import java.util.stream.*;

public class prog {
	public static void main(String[] args){
		IntStream stream1 = IntStream.of(30, 90, 70, 10);
		DoubleStream stream2 = DoubleStream.of(30.3, 90.9, 70.7, 10.1);
		
		System.out.println(stream1.sum());
		System.out.println(stream2.average().getAsDouble());
	}
}