llvm-ir, 231 bytes

Result

WA

Duration

521ms

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
  %5 = call i32 @putchar(i32 %4)
  ret i32 0
}

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

stdin

41 84 95
50 61 72
05 04 41
20 46 25

stdout

stderr

strace