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macro puts(2) {
    @1 = 0; // write
    @2 = /1/; // ptr
    @3 = /2/; // size
    system();
}

macro putchar(1) {
    @1 = 0; // write
    @2 = 10; // ptr
    @3 = 1; // size
    @10 = /1/; // value
    system();
}

@10 = 1;

jz(@10, continue); // conditional jump!

puts(["hi"], [2]);

continue:

putchar([10]);
puts(["    hello world"], [15]);
putchar([10]);
putchar([10]);

exit(0);