#include<stdio.h>
#include<conio.h>
 
int main() {
  	double arr[20];
  	int i;
  	double mul = 1;
  	double *ptr;
  
  	printf("\nNhap 20 phan tu: \n");
  
  	for (i = 0; i < 20; i++) {
  	    printf("Nhap a[%d] = ", i + 1);
  	    scanf("%lf", &arr[i]);
   	}
//======================================
	double x,sumd=0;
	ptr=arr;
	printf("\nNhap x = "); scanf("%lf", &x);
	for(i=0;i<20;i++)
	{
		if(*ptr>x && *ptr>0)
		{
			sumd=sumd+ *ptr;
		}
		ptr++;
	}
	printf("\nTong cac phan tu duong cua mang lon hon x la: %lf", sumd);
//======================================
	double y,suma=0;
	ptr=arr;
	printf("\nNhap y = "); scanf("%lf", &y);
	for(i=0;i<20;i++)
	{
		if(*ptr<y && *ptr<0)
		{
			suma=suma+ *ptr;
		}
		ptr++;
	}
	printf("\nTong cac phan tu am cua mang nhon hon y la: %lf", suma);	
	
	return(0);
}