program main
implicit none

character*3 :: s
character*1 :: r
integer :: curLongest,totalLongest,i
read(*,*) s

r = 'R'

totalLongest = 0
curLongest = 0

do i=1,3
  if(s(i:i).eq.r) then
    ! write(*,*) s(i:i),r
    curLongest = curLongest + 1
  else
    curLongest = 0
  endif
  if(totalLongest.lt.curLongest) then
    totalLongest = curLongest
  endif
enddo

write(*,*) totalLongest
end program
; 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.c7a6b2e9c683d3e8bb6ebc2b4301a5d0 = linkonce constant [72 x i8] c"/home/ubuntu/Downloads/TheStack_IR/Collated/Fortran/Source_788/source.f\00"
@_QQcl.52 = linkonce local_unnamed_addr constant [1 x i8] c"R"
@_QQEnvironmentDefaults = local_unnamed_addr constant ptr null

define void @_QQmain() local_unnamed_addr {
  %1 = alloca [1 x i8], align 1
  %2 = alloca [3 x i8], align 1
  %3 = tail call ptr @_FortranAioBeginExternalListInput(i32 -1, ptr nonnull @_QQcl.c7a6b2e9c683d3e8bb6ebc2b4301a5d0, i32 7)
  %4 = call i1 @_FortranAioInputAscii(ptr %3, ptr nonnull %2, i64 3)
  %5 = call i32 @_FortranAioEndIoStatement(ptr %3)
  %.unpack = load i8, ptr @_QQcl.52, align 1, !tbaa !3
  store i8 %.unpack, ptr %1, align 1, !tbaa !3
  %6 = call i32 @_FortranACharacterCompareScalar1(ptr nonnull %2, ptr nonnull %1, i64 1, i64 1)
  %7 = icmp eq i32 %6, 0
  %.18 = zext i1 %7 to i32
  %8 = getelementptr inbounds [3 x [1 x i8]], ptr %2, i64 0, i64 1
  %9 = call i32 @_FortranACharacterCompareScalar1(ptr nonnull %8, ptr nonnull %1, i64 1, i64 1)
  %10 = icmp eq i32 %9, 0
  %11 = select i1 %7, i32 2, i32 1
  %.18.1 = select i1 %10, i32 %11, i32 0
  %.1.1 = call i32 @llvm.smax.i32(i32 %.18, i32 %.18.1)
  %12 = getelementptr inbounds [3 x [1 x i8]], ptr %2, i64 0, i64 2
  %13 = call i32 @_FortranACharacterCompareScalar1(ptr nonnull %12, ptr nonnull %1, i64 1, i64 1)
  %14 = icmp eq i32 %13, 0
  %15 = add nuw nsw i32 %.18.1, 1
  %.18.2 = select i1 %14, i32 %15, i32 0
  %.1.2 = call i32 @llvm.smax.i32(i32 %.1.1, i32 %.18.2)
  %16 = call ptr @_FortranAioBeginExternalListOutput(i32 -1, ptr nonnull @_QQcl.c7a6b2e9c683d3e8bb6ebc2b4301a5d0, i32 26)
  %17 = call i1 @_FortranAioOutputInteger32(ptr %16, i32 %.1.2)
  %18 = call i32 @_FortranAioEndIoStatement(ptr %16)
  ret void
}

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

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

declare i32 @_FortranAioEndIoStatement(ptr) local_unnamed_addr

declare i32 @_FortranACharacterCompareScalar1(ptr, ptr, i64, i64) local_unnamed_addr

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

declare i1 @_FortranAioOutputInteger32(ptr, i32) local_unnamed_addr

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smax.i32(i32, i32) #0

attributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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"}
