Problem:
Rectangle

Write a program which calculates the area and perimeter of a given rectangle.

Input

The length a and breadth b of the rectangle are given in a line separated by a single space.

Output

Print the area and perimeter of the rectangle in a line. The two integers should be separated by a single space.

Constraints

1 ≤ a, b ≤ 100

Sample Input 1

3 5

Sample Output 1

15 16

Solution in C (judge verdict: Time Limit Exceeded)

#include<stdio.h>
int main(void){
    double a=0,b=101;
    while(a<1){
        scanf("a:%lf",&a);
    }
    while(b>100){
        scanf("b:%lf",&b);
    }
    printf("%lf %lf",a*b,2*(a+b));
    return 0;
}