program ABC073B
    implicit none
    integer(8)::N,l,r,i
    integer(8)::result=0
    read(5,*)N

    do i=1,N
        read(5,*)l,r
        result=result+r-l+1
    end do

    print'(i0)',result
end program ABC073B
; 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"

@_QFEresult = internal unnamed_addr global i64 0
@_QQcl.31776dca185463bc68227b609a6513b4 = linkonce constant [73 x i8] c"/home/ubuntu/Downloads/TheStack_IR/Collated/Fortran/Source_6924/source.f\00"
@_QQcl.28693029 = linkonce constant [4 x i8] c"(i0)"
@_QQEnvironmentDefaults = local_unnamed_addr constant ptr null

define void @_QQmain() local_unnamed_addr {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = tail call ptr @_FortranAioBeginExternalListInput(i32 5, ptr nonnull @_QQcl.31776dca185463bc68227b609a6513b4, i32 5)
  %5 = call i1 @_FortranAioInputInteger(ptr %4, ptr nonnull %2, i32 8)
  %6 = call i32 @_FortranAioEndIoStatement(ptr %4)
  %7 = load i64, ptr %2, align 8, !tbaa !3
  %8 = icmp sgt i64 %7, 0
  br i1 %8, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %9 = phi i64 [ %20, %.lr.ph ], [ %7, %0 ]
  %10 = call ptr @_FortranAioBeginExternalListInput(i32 5, ptr nonnull @_QQcl.31776dca185463bc68227b609a6513b4, i32 8)
  %11 = call i1 @_FortranAioInputInteger(ptr %10, ptr nonnull %1, i32 8)
  %12 = call i1 @_FortranAioInputInteger(ptr %10, ptr nonnull %3, i32 8)
  %13 = call i32 @_FortranAioEndIoStatement(ptr %10)
  %14 = load i64, ptr @_QFEresult, align 8, !tbaa !3
  %15 = load i64, ptr %3, align 8, !tbaa !3
  %16 = load i64, ptr %1, align 8, !tbaa !3
  %17 = add i64 %14, 1
  %18 = add i64 %17, %15
  %19 = sub i64 %18, %16
  store i64 %19, ptr @_QFEresult, align 8, !tbaa !3
  %20 = add nsw i64 %9, -1
  %21 = icmp ugt i64 %9, 1
  br i1 %21, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %0
  %22 = call ptr @_FortranAioBeginExternalFormattedOutput(ptr nonnull @_QQcl.28693029, i64 4, ptr null, i32 -1, ptr nonnull @_QQcl.31776dca185463bc68227b609a6513b4, i32 12)
  %23 = load i64, ptr @_QFEresult, align 8, !tbaa !3
  %24 = call i1 @_FortranAioOutputInteger64(ptr %22, i64 %23)
  %25 = call i32 @_FortranAioEndIoStatement(ptr %22)
  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 @_FortranAioBeginExternalFormattedOutput(ptr, i64, ptr, i32, ptr, i32) local_unnamed_addr

declare i1 @_FortranAioOutputInteger64(ptr, i64) 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"}
