Notes : IN C LANGUAGE

PAY ATTENTION TO CAASE, AND THE LOGIC

DONT USE VOID MAIN

INPUT AND OUTPUT MUST BE SAME

Sub - Rectangle As a lot of students don't like long problem statements, Lili decided to make this one as short as possible. She asks you to solve a simple problem: given a rectangle of size NM. determine how many sub-rectangles are there in the rectangle! Format Input The only line of input consists of two integers N and M. the dimension of the given rectangle. Format Output Output a single integer X which is the amount of sub-rectangles in the given rectangle. Constraints .13N 50 15M