program abc
	implicit none
	integer :: i,j,b
    integer(16) :: h,w,a

	read(*,*) h,w

	a = h * w
    
    if(mod(a,2) /= 0) then
    	a = (h * w + 1) / 2
    else
    	a = h * w / 2
    endif
    
    if(h == 1 .or. w == 1) a = 1
	
	write(*,*) a
    
end program abc

; 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.adff20e66331c2327d913abde5d1a695 = linkonce constant [73 x i8] c"/home/ubuntu/Downloads/TheStack_IR/Collated/Fortran/Source_2103/source.f\00"
@_QQEnvironmentDefaults = local_unnamed_addr constant ptr null

define void @_QQmain() local_unnamed_addr {
  %1 = alloca i128, align 8
  %2 = alloca i128, align 8
  %3 = tail call ptr @_FortranAioBeginExternalListInput(i32 -1, ptr nonnull @_QQcl.adff20e66331c2327d913abde5d1a695, i32 6)
  %4 = call i1 @_FortranAioInputInteger(ptr %3, ptr nonnull %1, i32 16)
  %5 = call i1 @_FortranAioInputInteger(ptr %3, ptr nonnull %2, i32 16)
  %6 = call i32 @_FortranAioEndIoStatement(ptr %3)
  %7 = load i128, ptr %1, align 8, !tbaa !3
  %8 = load i128, ptr %2, align 8, !tbaa !3
  %9 = mul i128 %8, %7
  %10 = and i128 %9, 1
  %.0.in = add i128 %10, %9
  %.0 = sdiv i128 %.0.in, 2
  %11 = icmp eq i128 %7, 1
  %12 = icmp eq i128 %8, 1
  %13 = or i1 %11, %12
  %.1 = select i1 %13, i128 1, i128 %.0
  %14 = call ptr @_FortranAioBeginExternalListOutput(i32 -1, ptr nonnull @_QQcl.adff20e66331c2327d913abde5d1a695, i32 18)
  %15 = call i1 @_FortranAioOutputInteger128(ptr %14, i128 %.1)
  %16 = call i32 @_FortranAioEndIoStatement(ptr %14)
  ret void
}

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 @_FortranAioBeginExternalListOutput(i32, ptr, i32) local_unnamed_addr

declare i1 @_FortranAioOutputInteger128(ptr, i128) local_unnamed_addr

!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"}
