244 - Chocolate Bars

Chocolate Bars

Time Limit: 1 sec


The Problem

Mina has M chocolate bars. Both Mina and Rima got N chocolate bars. Tina got 3 times more chocolate bars than Rima. Tell me how many chocolate bars was there??



The Input

Input file contains two integer numbers M(X < 100000000) and N(Y < 100000000) 


The Output

Output file shows single integer value in a separate line. 


Sample Input

43214321 98769876


Sample Output






Problem Setter: Samia Safa Ahmed