llvm-ir, 230 bytes

Result

WA

Duration

484ms

Code [DL]

define i32 @main() {
  %1 = alloca i8, align 1
  call i32 @getchar(i8* %1)
  %3 = load i8, i8* %1, align 1
;  %4 = sext i8 %3 to i32
  %4 = call i32 @putchar(i8 %3)
  ret i32 0
}

declare i32 @putchar(i8)
declare i32 @getchar(i8*)

stdin

11 91 43
86 52 73
42 62 81
06 62 01

stdout

stderr

strace