Dilu's Library

Dilu is a young boy who loves mathematics. He recently learned how to code. He was interested in sol...

Mirror World

Imagine a world inside mirror, where everything becomes reverse. Left hand becomes right hand, right...

Genius Needs Help

You all know Emrul bhai, right? He is a genius guy. He knows how to add two integer numbers and so d...

Elementary Arithmetic

When Shakib was little, his mother used to help him with his studies. Usually, around 7 PM in the ev...

Kitchen Combinatorics

The world-renowned Swedish Chef is planning a gourmet three-course dinner for some muppets: a starte...

Elementary Arithmetic - 2

Long ago, after learning how to add two numbers, Shakib came to know about multiplication. Multiplic...

BigNumSum

You will be given two numbers of 40 digits each. You will have to print the summation of these two n...