Why so Negative?

Problem

Each number from input is negative. Remove the negative sign and print the result.

2. Why so negative?, Comet 64

Solution 1

Any non-zero number multiplied by -1 would have the opposite sign. Given a negative number, multiplying the number by -1 would result in a positive number. We can rule out the possibility of an input being zero because the problem states that each input is a negative number.

int = -1;         // Store -1 in a register.
reg = input;      // Read an input number.
reg = reg * int;  // Multiply number by -1.
output = reg;     // Print the result.

Solution 2

Similar to Solution 1. There is no need to store -1 in the register int. We can directly multiply the input by -1. This solution is optimal, according to the game.

reg = input * -1;  // Multiply input number by -1.
output = reg;      // Print the result.