; LLVM IR from plskz/competitive-programming :: Junior Training Sheet/A (64)

; 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" }
%"class.std::set" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }
%"struct.std::pair" = type <{ %"struct.std::_Rb_tree_const_iterator", i8, [7 x i8] }>
%"struct.std::_Rb_tree_const_iterator" = type { ptr }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca %"class.std::set", align 8
  %4 = alloca %"class.std::set", align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i8, align 1
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca %"struct.std::pair", align 8
  %12 = alloca %"struct.std::pair", align 8
  %13 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %14 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  store i32 0, ptr %1, align 4
  %15 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %16 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %17 = getelementptr i8, ptr %16, i64 -24
  %18 = load i64, ptr %17, align 8
  %19 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %18
  %20 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %19, ptr noundef null)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  %21 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
  call void @llvm.lifetime.start.p0(i64 48, ptr %3) #6
  call void @_ZNSt3setIcSt4lessIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(48) %3) #6
  call void @llvm.lifetime.start.p0(i64 48, ptr %4) #6
  call void @_ZNSt3setIcSt4lessIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(48) %4) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #6
  store i32 0, ptr %5, align 4, !tbaa !8
  br label %22

22:                                               ; preds = %69, %0
  %23 = load i32, ptr %5, align 4, !tbaa !8
  %24 = load i32, ptr %2, align 4, !tbaa !8
  %25 = icmp slt i32 %23, %24
  br i1 %25, label %27, label %26

26:                                               ; preds = %22
  store i32 2, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  br label %72

27:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #6
  store i32 0, ptr %7, align 4, !tbaa !8
  br label %28

28:                                               ; preds = %65, %27
  %29 = load i32, ptr %7, align 4, !tbaa !8
  %30 = load i32, ptr %2, align 4, !tbaa !8
  %31 = icmp slt i32 %29, %30
  br i1 %31, label %33, label %32

32:                                               ; preds = %28
  store i32 5, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #6
  br label %68

33:                                               ; preds = %28
  call void @llvm.lifetime.start.p0(i64 1, ptr %8) #6
  %34 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_RS3_(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 1 dereferenceable(1) %8)
          to label %35 unwind label %53

35:                                               ; preds = %33
  %36 = load i32, ptr %5, align 4, !tbaa !8
  %37 = load i32, ptr %7, align 4, !tbaa !8
  %38 = icmp eq i32 %36, %37
  br i1 %38, label %46, label %39

39:                                               ; preds = %35
  %40 = load i32, ptr %5, align 4, !tbaa !8
  %41 = load i32, ptr %7, align 4, !tbaa !8
  %42 = add nsw i32 %40, %41
  %43 = load i32, ptr %2, align 4, !tbaa !8
  %44 = sub nsw i32 %43, 1
  %45 = icmp eq i32 %42, %44
  br i1 %45, label %46, label %57

46:                                               ; preds = %39, %35
  %47 = invoke { ptr, i8 } @_ZNSt3setIcSt4lessIcESaIcEE6insertERKc(ptr noundef nonnull align 8 dereferenceable(48) %3, ptr noundef nonnull align 1 dereferenceable(1) %8)
          to label %48 unwind label %53

48:                                               ; preds = %46
  %49 = getelementptr inbounds { ptr, i8 }, ptr %11, i32 0, i32 0
  %50 = extractvalue { ptr, i8 } %47, 0
  store ptr %50, ptr %49, align 8
  %51 = getelementptr inbounds { ptr, i8 }, ptr %11, i32 0, i32 1
  %52 = extractvalue { ptr, i8 } %47, 1
  store i8 %52, ptr %51, align 8
  br label %64

53:                                               ; preds = %57, %46, %33
  %54 = landingpad { ptr, i32 }
          cleanup
  %55 = extractvalue { ptr, i32 } %54, 0
  store ptr %55, ptr %9, align 8
  %56 = extractvalue { ptr, i32 } %54, 1
  store i32 %56, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 1, ptr %8) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  br label %101

57:                                               ; preds = %39
  %58 = invoke { ptr, i8 } @_ZNSt3setIcSt4lessIcESaIcEE6insertERKc(ptr noundef nonnull align 8 dereferenceable(48) %4, ptr noundef nonnull align 1 dereferenceable(1) %8)
          to label %59 unwind label %53

59:                                               ; preds = %57
  %60 = getelementptr inbounds { ptr, i8 }, ptr %12, i32 0, i32 0
  %61 = extractvalue { ptr, i8 } %58, 0
  store ptr %61, ptr %60, align 8
  %62 = getelementptr inbounds { ptr, i8 }, ptr %12, i32 0, i32 1
  %63 = extractvalue { ptr, i8 } %58, 1
  store i8 %63, ptr %62, align 8
  br label %64

64:                                               ; preds = %59, %48
  call void @llvm.lifetime.end.p0(i64 1, ptr %8) #6
  br label %65

65:                                               ; preds = %64
  %66 = load i32, ptr %7, align 4, !tbaa !8
  %67 = add nsw i32 %66, 1
  store i32 %67, ptr %7, align 4, !tbaa !8
  br label %28, !llvm.loop !11

68:                                               ; preds = %32
  br label %69

69:                                               ; preds = %68
  %70 = load i32, ptr %5, align 4, !tbaa !8
  %71 = add nsw i32 %70, 1
  store i32 %71, ptr %5, align 4, !tbaa !8
  br label %22, !llvm.loop !13

72:                                               ; preds = %26
  %73 = call noundef i64 @_ZNKSt3setIcSt4lessIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48) %3) #6
  %74 = icmp eq i64 %73, 1
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr %14) #6
  br i1 %74, label %75, label %90

75:                                               ; preds = %72
  %76 = call noundef i64 @_ZNKSt3setIcSt4lessIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48) %4) #6
  %77 = icmp eq i64 %76, 1
  br i1 %77, label %78, label %90

78:                                               ; preds = %75
  %79 = call ptr @_ZNKSt3setIcSt4lessIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %3) #6
  %80 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %13, i32 0, i32 0
  store ptr %79, ptr %80, align 8
  %81 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNKSt23_Rb_tree_const_iteratorIcEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %13) #6
  %82 = load i8, ptr %81, align 1, !tbaa !14
  %83 = sext i8 %82 to i32
  %84 = call ptr @_ZNKSt3setIcSt4lessIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %4) #6
  %85 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %14, i32 0, i32 0
  store ptr %84, ptr %85, align 8
  %86 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNKSt23_Rb_tree_const_iteratorIcEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %14) #6
  %87 = load i8, ptr %86, align 1, !tbaa !14
  %88 = sext i8 %87 to i32
  %89 = icmp ne i32 %83, %88
  br label %90

90:                                               ; preds = %78, %75, %72
  %91 = phi i1 [ false, %75 ], [ false, %72 ], [ %89, %78 ]
  %92 = zext i1 %91 to i64
  %93 = select i1 %91, ptr @.str, ptr @.str.1
  %94 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef %93)
          to label %95 unwind label %97

95:                                               ; preds = %90
  call void @llvm.lifetime.end.p0(i64 8, ptr %14) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #6
  store i32 0, ptr %1, align 4
  store i32 1, ptr %6, align 4
  call void @_ZNSt3setIcSt4lessIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %4) #6
  call void @llvm.lifetime.end.p0(i64 48, ptr %4) #6
  call void @_ZNSt3setIcSt4lessIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %3) #6
  call void @llvm.lifetime.end.p0(i64 48, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  %96 = load i32, ptr %1, align 4
  ret i32 %96

97:                                               ; preds = %90
  %98 = landingpad { ptr, i32 }
          cleanup
  %99 = extractvalue { ptr, i32 } %98, 0
  store ptr %99, ptr %9, align 8
  %100 = extractvalue { ptr, i32 } %98, 1
  store i32 %100, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %14) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #6
  br label %101

101:                                              ; preds = %97, %53
  call void @_ZNSt3setIcSt4lessIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %4) #6
  call void @llvm.lifetime.end.p0(i64 48, ptr %4) #6
  call void @_ZNSt3setIcSt4lessIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %3) #6
  call void @llvm.lifetime.end.p0(i64 48, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  br label %102

102:                                              ; preds = %101
  %103 = load ptr, ptr %9, align 8
  %104 = load i32, ptr %10, align 4
  %105 = insertvalue { ptr, i32 } poison, ptr %103, 0
  %106 = insertvalue { ptr, i32 } %105, i32 %104, 1
  resume { ptr, i32 } %106
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) #1

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) #2 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt3setIcSt4lessIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #2 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_RS3_(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 1 dereferenceable(1)) #1

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i8 } @_ZNSt3setIcSt4lessIcESaIcEE6insertERKc(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 1 dereferenceable(1)) #4 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt3setIcSt4lessIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt3setIcSt4lessIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 1 dereferenceable(1) ptr @_ZNKSt23_Rb_tree_const_iteratorIcEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt3setIcSt4lessIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #2 align 2

attributes #0 = { 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 #1 = { "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 = { mustprogress nounwind 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 #3 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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 #5 = { 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" }
attributes #6 = { nounwind }

!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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = !{!10, !10, i64 0}


; 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" }
%"class.std::set" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }
%"struct.std::_Rb_tree_const_iterator" = type { ptr }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca %"class.std::set", align 8
  %3 = alloca %"class.std::set", align 8
  %4 = alloca i8, align 1
  %5 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %6 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %7 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %8 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %9 = getelementptr i8, ptr %8, i64 -24
  %10 = load i64, ptr %9, align 8
  %11 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %10
  %12 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %11, ptr noundef null)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  %13 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  call void @llvm.lifetime.start.p0(i64 48, ptr nonnull %2) #6
  call void @_ZNSt3setIcSt4lessIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(48) %2) #6
  call void @llvm.lifetime.start.p0(i64 48, ptr nonnull %3) #6
  call void @_ZNSt3setIcSt4lessIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(48) %3) #6
  %14 = load i32, ptr %1, align 4, !tbaa !8
  %15 = icmp sgt i32 %14, 0
  br i1 %15, label %.preheader, label %._crit_edge19

.preheader:                                       ; preds = %0, %._crit_edge
  %16 = phi i32 [ %20, %._crit_edge ], [ %14, %0 ]
  %.018 = phi i32 [ %21, %._crit_edge ], [ 0, %0 ]
  %17 = icmp sgt i32 %16, 0
  br i1 %17, label %.lr.ph, label %._crit_edge

._crit_edge19:                                    ; preds = %._crit_edge, %0
  %18 = call noundef i64 @_ZNKSt3setIcSt4lessIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48) %2) #6
  %19 = icmp eq i64 %18, 1
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #6
  br i1 %19, label %40, label %51

._crit_edge:                                      ; preds = %36, %.preheader
  %20 = phi i32 [ %16, %.preheader ], [ %38, %36 ]
  %21 = add nuw nsw i32 %.018, 1
  %22 = icmp slt i32 %21, %20
  br i1 %22, label %.preheader, label %._crit_edge19, !llvm.loop !11

.lr.ph:                                           ; preds = %.preheader, %36
  %.01216 = phi i32 [ %37, %36 ], [ 0, %.preheader ]
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %4) #6
  %23 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_RS3_(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %24 unwind label %32

24:                                               ; preds = %.lr.ph
  %25 = icmp eq i32 %.018, %.01216
  br i1 %25, label %31, label %26

26:                                               ; preds = %24
  %27 = add nuw nsw i32 %.01216, %.018
  %28 = load i32, ptr %1, align 4, !tbaa !8
  %29 = add nsw i32 %28, -1
  %30 = icmp eq i32 %27, %29
  br i1 %30, label %31, label %.invoke

31:                                               ; preds = %26, %24
  br label %.invoke

32:                                               ; preds = %.invoke, %.lr.ph
  %33 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #6
  br label %57

.invoke:                                          ; preds = %26, %31
  %34 = phi ptr [ %2, %31 ], [ %3, %26 ]
  %35 = invoke { ptr, i8 } @_ZNSt3setIcSt4lessIcESaIcEE6insertERKc(ptr noundef nonnull align 8 dereferenceable(48) %34, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %36 unwind label %32

36:                                               ; preds = %.invoke
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #6
  %37 = add nuw nsw i32 %.01216, 1
  %38 = load i32, ptr %1, align 4, !tbaa !8
  %39 = icmp slt i32 %37, %38
  br i1 %39, label %.lr.ph, label %._crit_edge, !llvm.loop !14

40:                                               ; preds = %._crit_edge19
  %41 = call noundef i64 @_ZNKSt3setIcSt4lessIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48) %3) #6
  %42 = icmp eq i64 %41, 1
  br i1 %42, label %43, label %51

43:                                               ; preds = %40
  %44 = call ptr @_ZNKSt3setIcSt4lessIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %2) #6
  store ptr %44, ptr %5, align 8
  %45 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNKSt23_Rb_tree_const_iteratorIcEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %5) #6
  %46 = load i8, ptr %45, align 1, !tbaa !15
  %47 = call ptr @_ZNKSt3setIcSt4lessIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %3) #6
  store ptr %47, ptr %6, align 8
  %48 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNKSt23_Rb_tree_const_iteratorIcEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #6
  %49 = load i8, ptr %48, align 1, !tbaa !15
  %.not = icmp eq i8 %46, %49
  %50 = select i1 %.not, ptr @.str.1, ptr @.str
  br label %51

51:                                               ; preds = %43, %40, %._crit_edge19
  %52 = phi ptr [ @.str.1, %40 ], [ @.str.1, %._crit_edge19 ], [ %50, %43 ]
  %53 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull %52)
          to label %54 unwind label %55

54:                                               ; preds = %51
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #6
  call void @_ZNSt3setIcSt4lessIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %3) #6
  call void @llvm.lifetime.end.p0(i64 48, ptr nonnull %3) #6
  call void @_ZNSt3setIcSt4lessIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %2) #6
  call void @llvm.lifetime.end.p0(i64 48, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  ret i32 0

55:                                               ; preds = %51
  %56 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #6
  br label %57

57:                                               ; preds = %55, %32
  %.pn = phi { ptr, i32 } [ %33, %32 ], [ %56, %55 ]
  call void @_ZNSt3setIcSt4lessIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %3) #6
  call void @llvm.lifetime.end.p0(i64 48, ptr nonnull %3) #6
  call void @_ZNSt3setIcSt4lessIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %2) #6
  call void @llvm.lifetime.end.p0(i64 48, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  resume { ptr, i32 } %.pn
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt3setIcSt4lessIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #2 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_RS3_(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #1

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i8 } @_ZNSt3setIcSt4lessIcESaIcEE6insertERKc(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt3setIcSt4lessIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt3setIcSt4lessIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 1 dereferenceable(1) ptr @_ZNKSt23_Rb_tree_const_iteratorIcEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt3setIcSt4lessIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #2 align 2

attributes #0 = { 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 #1 = { "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 = { mustprogress nounwind 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 #3 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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 #5 = { 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" }
attributes #6 = { nounwind }

!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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12, !13}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!"llvm.loop.unswitch.partial.disable"}
!14 = distinct !{!14, !12}
!15 = !{!10, !10, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopInstSimplifyPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SCCPPass,SROAPass,SimpleLoopUnswitchPass,SimplifyCFGPass,TailCallElimPass