Easier Than It Looks

Problem

Read an integer x from input and print the number x * (x - 1).

21. Easier than it looks, Comet 64

Solution

Given an integer x, calculate x * (x - 1). This solution is optimal, according to the game.

int = input;      // Read the integer x.
reg = int - 1;    // x - 1
int = int * reg;  // x * (x - 1)
output = int;     // Print result.