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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 032767 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.

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Compiled from AT&T syntax to x86-64 Linux. Use syscalls to write output.
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