Time Limit: 1000ms
Memory Limit: 65536kb
DescriptionYour task is to find the sum of all integer numbers lying between 1 and N inclusive
InputThe input consists of a single integer N that is not greater than 10000 by it's absolute value.
OutputWrite a single integer number that is the sum of all integer numbers lying between 1 and Ninclusive.
-3 3 2
-5 6 3