Paired Coordinates

Problem

Read in the numbers x_1, x_2, y_1, y_2 and output the points (x_1, y_1) and (x_2, y_2).

32. Paired coordinates, Comet 64

Solution

We are given x_1, x_2, y_1, y_2. We must output (x_1, y_1) and (x_2, y_2). This solution is optimal, according to the game.

int = input;        // x_1
reg = input;        // x_2
switch reg;         // Store x_2 in memory.
reg = input;        // y_1
output = int, reg;  // Print (x_1, y_1).
switch int;         // Retrieve x_2 from memory.
reg = input;        // y_2
output = int, reg;  // Print (x_2, y_2).