program test
  implicit none
  integer :: a,b,k
  
  read ( unit = *, fmt = * ) a, b

  if ( mod ( a + b, 2 ) == 0 ) then

     k = ( a + b ) / 2

     write ( unit = *, fmt = '(i0)')  k

  else

    write ( unit = *, fmt = '(a10)') 'IMPOSSIBLE'

  end if
  
  stop
  
end program test

; ModuleID = 'FIRModule'
source_filename = "FIRModule"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-linux-gnu"

@_QQcl.cca92a36657826186fe5edcc20e5197c = linkonce constant [73 x i8] c"/home/ubuntu/Downloads/TheStack_IR/Collated/Fortran/Source_3639/source.f\00"
@_QQcl.28693029 = linkonce constant [4 x i8] c"(i0)"
@_QQcl.2861313029 = linkonce constant [5 x i8] c"(a10)"
@_QQcl.494D504F535349424C45 = linkonce constant [10 x i8] c"IMPOSSIBLE"
@_QQEnvironmentDefaults = local_unnamed_addr constant ptr null

; Function Attrs: noreturn
define void @_QQmain() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = tail call ptr @_FortranAioBeginExternalListInput(i32 -1, ptr nonnull @_QQcl.cca92a36657826186fe5edcc20e5197c, i32 5)
  %4 = call i1 @_FortranAioInputInteger(ptr %3, ptr nonnull %1, i32 4)
  %5 = call i1 @_FortranAioInputInteger(ptr %3, ptr nonnull %2, i32 4)
  %6 = call i32 @_FortranAioEndIoStatement(ptr %3)
  %7 = load i32, ptr %1, align 4, !tbaa !3
  %8 = load i32, ptr %2, align 4, !tbaa !3
  %9 = add i32 %8, %7
  %10 = and i32 %9, 1
  %11 = icmp eq i32 %10, 0
  br i1 %11, label %12, label %16

12:                                               ; preds = %0
  %13 = sdiv i32 %9, 2
  %14 = call ptr @_FortranAioBeginExternalFormattedOutput(ptr nonnull @_QQcl.28693029, i64 4, ptr null, i32 -1, ptr nonnull @_QQcl.cca92a36657826186fe5edcc20e5197c, i32 11)
  %15 = call i1 @_FortranAioOutputInteger32(ptr %14, i32 %13)
  br label %19

16:                                               ; preds = %0
  %17 = call ptr @_FortranAioBeginExternalFormattedOutput(ptr nonnull @_QQcl.2861313029, i64 5, ptr null, i32 -1, ptr nonnull @_QQcl.cca92a36657826186fe5edcc20e5197c, i32 15)
  %18 = call i1 @_FortranAioOutputAscii(ptr %17, ptr nonnull @_QQcl.494D504F535349424C45, i64 10)
  br label %19

19:                                               ; preds = %12, %16
  %.sink = phi ptr [ %14, %12 ], [ %17, %16 ]
  %20 = call i32 @_FortranAioEndIoStatement(ptr %.sink)
  %21 = call {} @_FortranAStopStatement(i32 0, i1 false, i1 false)
  unreachable
}

declare ptr @_FortranAioBeginExternalListInput(i32, ptr, i32) local_unnamed_addr

declare i1 @_FortranAioInputInteger(ptr, ptr, i32) local_unnamed_addr

declare i32 @_FortranAioEndIoStatement(ptr) local_unnamed_addr

declare ptr @_FortranAioBeginExternalFormattedOutput(ptr, i64, ptr, i32, ptr, i32) local_unnamed_addr

declare i1 @_FortranAioOutputInteger32(ptr, i32) local_unnamed_addr

declare i1 @_FortranAioOutputAscii(ptr, ptr, i64) local_unnamed_addr

declare {} @_FortranAStopStatement(i32, i1, i1) local_unnamed_addr

attributes #0 = { noreturn }

!llvm.module.flags = !{!0, !1, !2}

!0 = !{i32 2, !"Debug Info Version", i32 3}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{!4, !4, i64 0}
!4 = !{!"any data access", !5, i64 0}
!5 = !{!"any access", !6, i64 0}
!6 = !{!"Flang Type TBAA Root"}
