; LLVM IR from VastoLorde95/Competitive-Programming :: Codeforces/6 Beta Division 2/Problem D (D2)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@a = external dso_local global i64, align 8
@b = external dso_local global i64, align 8
@n = external dso_local global i64, align 8
@i = external dso_local global i64, align 8
@ans = external dso_local global i64, align 8
@h = external dso_local global [20 x i64], align 16
@f = external dso_local global [100 x i64], align 16
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z3dfslll(i64 noundef, i64 noundef, i64 noundef) #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #1 {
  %1 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %2 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) @n)
  %3 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) %2, ptr noundef nonnull align 8 dereferenceable(8) @a)
  %4 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) %3, ptr noundef nonnull align 8 dereferenceable(8) @b)
  store i64 1, ptr @i, align 8, !tbaa !5
  br label %5

5:                                                ; preds = %13, %0
  %6 = load i64, ptr @i, align 8, !tbaa !5
  %7 = load i64, ptr @n, align 8, !tbaa !5
  %8 = icmp sle i64 %6, %7
  br i1 %8, label %9, label %16

9:                                                ; preds = %5
  %10 = load i64, ptr @i, align 8, !tbaa !5
  %11 = getelementptr inbounds [20 x i64], ptr @h, i64 0, i64 %10
  %12 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %11)
  br label %13

13:                                               ; preds = %9
  %14 = load i64, ptr @i, align 8, !tbaa !5
  %15 = add nsw i64 %14, 1
  store i64 %15, ptr @i, align 8, !tbaa !5
  br label %5, !llvm.loop !9

16:                                               ; preds = %5
  store i64 1, ptr @ans, align 8, !tbaa !5
  br label %17

17:                                               ; preds = %42, %16
  %18 = load i64, ptr @ans, align 8, !tbaa !5
  %19 = call noundef zeroext i1 @_Z3dfslll(i64 noundef %18, i64 noundef 1, i64 noundef 2)
  br i1 %19, label %20, label %41

20:                                               ; preds = %17
  %21 = load i64, ptr @ans, align 8, !tbaa !5
  %22 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEl(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %21)
  %23 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %22, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  %24 = load i64, ptr @ans, align 8, !tbaa !5
  store i64 %24, ptr @i, align 8, !tbaa !5
  br label %25

25:                                               ; preds = %34, %20
  %26 = load i64, ptr @i, align 8, !tbaa !5
  %27 = icmp sgt i64 %26, 1
  br i1 %27, label %28, label %37

28:                                               ; preds = %25
  %29 = load i64, ptr @i, align 8, !tbaa !5
  %30 = getelementptr inbounds [100 x i64], ptr @f, i64 0, i64 %29
  %31 = load i64, ptr %30, align 8, !tbaa !5
  %32 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEl(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %31)
  %33 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) %32, i8 noundef signext 32)
  br label %34

34:                                               ; preds = %28
  %35 = load i64, ptr @i, align 8, !tbaa !5
  %36 = add nsw i64 %35, -1
  store i64 %36, ptr @i, align 8, !tbaa !5
  br label %25, !llvm.loop !11

37:                                               ; preds = %25
  %38 = load i64, ptr getelementptr inbounds ([100 x i64], ptr @f, i64 0, i64 1), align 8, !tbaa !5
  %39 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEl(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %38)
  %40 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %39, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  ret i32 0

41:                                               ; preds = %17
  br label %42

42:                                               ; preds = %41
  %43 = load i64, ptr @ans, align 8, !tbaa !5
  %44 = add nsw i64 %43, 1
  store i64 %44, ptr @ans, align 8, !tbaa !5
  br label %17, !llvm.loop !12
}

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) #0 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEl(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #0 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8), i8 noundef signext) #2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@a = external dso_local global i64, align 8
@b = external dso_local global i64, align 8
@n = external dso_local global i64, align 8
@i = external dso_local local_unnamed_addr global i64, align 8
@ans = external dso_local local_unnamed_addr global i64, align 8
@h = external dso_local global [20 x i64], align 16
@f = external dso_local local_unnamed_addr global [100 x i64], align 16
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z3dfslll(i64 noundef, i64 noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #1 {
  %1 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) @n)
  %2 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) %1, ptr noundef nonnull align 8 dereferenceable(8) @a)
  %3 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) %2, ptr noundef nonnull align 8 dereferenceable(8) @b)
  store i64 1, ptr @i, align 8, !tbaa !5
  %4 = load i64, ptr @n, align 8, !tbaa !5
  %.not4 = icmp slt i64 %4, 1
  br i1 %.not4, label %.preheader, label %.lr.ph

.preheader:                                       ; preds = %.lr.ph, %0
  store i64 1, ptr @ans, align 8, !tbaa !5
  %5 = tail call noundef zeroext i1 @_Z3dfslll(i64 noundef 1, i64 noundef 1, i64 noundef 2)
  br i1 %5, label %._crit_edge, label %.lr.ph6

.lr.ph:                                           ; preds = %0, %.lr.ph
  %storemerge5 = phi i64 [ %9, %.lr.ph ], [ 1, %0 ]
  %6 = getelementptr inbounds [20 x i64], ptr @h, i64 0, i64 %storemerge5
  %7 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %6)
  %8 = load i64, ptr @i, align 8, !tbaa !5
  %9 = add nsw i64 %8, 1
  store i64 %9, ptr @i, align 8, !tbaa !5
  %10 = load i64, ptr @n, align 8, !tbaa !5
  %.not.not = icmp slt i64 %8, %10
  br i1 %.not.not, label %.lr.ph, label %.preheader, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph6, %.preheader
  %11 = load i64, ptr @ans, align 8, !tbaa !5
  %12 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEl(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %11)
  %13 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %12, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  %14 = load i64, ptr @ans, align 8, !tbaa !5
  store i64 %14, ptr @i, align 8, !tbaa !5
  %15 = icmp sgt i64 %14, 1
  br i1 %15, label %.lr.ph9, label %._crit_edge10

.lr.ph9:                                          ; preds = %._crit_edge, %.lr.ph9
  %storemerge37 = phi i64 [ %21, %.lr.ph9 ], [ %14, %._crit_edge ]
  %16 = getelementptr inbounds [100 x i64], ptr @f, i64 0, i64 %storemerge37
  %17 = load i64, ptr %16, align 8, !tbaa !5
  %18 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEl(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %17)
  %19 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) %18, i8 noundef signext 32)
  %20 = load i64, ptr @i, align 8, !tbaa !5
  %21 = add nsw i64 %20, -1
  store i64 %21, ptr @i, align 8, !tbaa !5
  %22 = icmp sgt i64 %20, 2
  br i1 %22, label %.lr.ph9, label %._crit_edge10, !llvm.loop !11

._crit_edge10:                                    ; preds = %.lr.ph9, %._crit_edge
  %23 = load i64, ptr getelementptr inbounds (i8, ptr @f, i64 8), align 8, !tbaa !5
  %24 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEl(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %23)
  %25 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %24, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  ret i32 0

.lr.ph6:                                          ; preds = %.preheader, %.lr.ph6
  %26 = load i64, ptr @ans, align 8, !tbaa !5
  %27 = add nsw i64 %26, 1
  store i64 %27, ptr @ans, align 8, !tbaa !5
  %28 = tail call noundef zeroext i1 @_Z3dfslll(i64 noundef %27, i64 noundef 1, i64 noundef 2)
  br i1 %28, label %._crit_edge, label %.lr.ph6, !llvm.loop !12
}

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEl(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8), i8 noundef signext) local_unnamed_addr #2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass