llvm-ir, 253 bytes

Result

WA

Duration

515ms

Code [DL]

@.str = private unnamed_addr constant [15 x i8] c"Hello, world!\0A\00", align 1

define i32 @main() {
  %1 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i32 0, i32 0))
  ret i32 0
}

declare i32 @printf(i8*, ...)

stdin

93 40 86
71 33 07
19 66 01
49 81 67

stdout

Hello, world!

stderr

strace