Reverse Polish Notation

RPN (Reverse Polish Notation) is a way of writing expressions such that operators are written after their operands: 3 2 + rather than (3+2).

Each argument is an RPN expression, given as a space-separated list of tokens: either a number 0…32767 or an operator (addition +, subtraction -, multiplication * or integer division /).

Evaluate and print the result of each expression on its own line.

The result of each operation is a non-negative integer not exceeding 32,767. Division is guaranteed to have an exact integer result.