; LLVM IR from DionysiosB/CodeForces :: 2021A-MeaningMean (main)

; 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::multiset" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<long, long, std::_Identity<long>, std::less<long>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<long, long, std::_Identity<long>, std::less<long>>::_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 }

@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 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 i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca %"class.std::multiset", align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %10 = alloca i64, align 8
  %11 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %12 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %13 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %14 = alloca i64, align 8
  %15 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %16 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %17 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %18 = alloca i64, align 8
  %19 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %20 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #5
  %21 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %22

22:                                               ; preds = %100, %0
  %23 = load i64, ptr %2, align 8, !tbaa !5
  %24 = add nsw i64 %23, -1
  store i64 %24, ptr %2, align 8, !tbaa !5
  %25 = icmp ne i64 %23, 0
  br i1 %25, label %26, label %106

26:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #5
  %27 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  call void @llvm.lifetime.start.p0(i64 48, ptr %4) #5
  call void @_ZNSt8multisetIlSt4lessIlESaIlEEC2Ev(ptr noundef nonnull align 8 dereferenceable(48) %4) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #5
  store i64 0, ptr %5, align 8, !tbaa !5
  br label %28

28:                                               ; preds = %39, %26
  %29 = load i64, ptr %5, align 8, !tbaa !5
  %30 = load i64, ptr %3, align 8, !tbaa !5
  %31 = icmp slt i64 %29, %30
  br i1 %31, label %33, label %32

32:                                               ; preds = %28
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #5
  br label %46

33:                                               ; preds = %28
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  %34 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %6)
          to label %35 unwind label %42

35:                                               ; preds = %33
  %36 = invoke ptr @_ZNSt8multisetIlSt4lessIlESaIlEE6insertERKl(ptr noundef nonnull align 8 dereferenceable(48) %4, ptr noundef nonnull align 8 dereferenceable(8) %6)
          to label %37 unwind label %42

37:                                               ; preds = %35
  %38 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %9, i32 0, i32 0
  store ptr %36, ptr %38, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  br label %39

39:                                               ; preds = %37
  %40 = load i64, ptr %5, align 8, !tbaa !5
  %41 = add nsw i64 %40, 1
  store i64 %41, ptr %5, align 8, !tbaa !5
  br label %28, !llvm.loop !9

42:                                               ; preds = %35, %33
  %43 = landingpad { ptr, i32 }
          cleanup
  %44 = extractvalue { ptr, i32 } %43, 0
  store ptr %44, ptr %7, align 8
  %45 = extractvalue { ptr, i32 } %43, 1
  store i32 %45, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #5
  br label %105

46:                                               ; preds = %32
  br label %47

47:                                               ; preds = %78, %46
  %48 = call noundef i64 @_ZNKSt8multisetIlSt4lessIlESaIlEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48) %4) #5
  %49 = icmp ugt i64 %48, 1
  br i1 %49, label %50, label %94

50:                                               ; preds = %47
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #5
  %51 = call ptr @_ZNKSt8multisetIlSt4lessIlESaIlEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %4) #5
  %52 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %11, i32 0, i32 0
  store ptr %51, ptr %52, align 8
  %53 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIlEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %11) #5
  %54 = load i64, ptr %53, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #5
  store i64 %54, ptr %10, align 8, !tbaa !5
  %55 = call ptr @_ZNKSt8multisetIlSt4lessIlESaIlEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %4) #5
  %56 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %12, i32 0, i32 0
  store ptr %55, ptr %56, align 8
  %57 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %12, i32 0, i32 0
  %58 = load ptr, ptr %57, align 8
  %59 = invoke ptr @_ZNSt8multisetIlSt4lessIlESaIlEE5eraseB5cxx11ESt23_Rb_tree_const_iteratorIlE(ptr noundef nonnull align 8 dereferenceable(48) %4, ptr %58)
          to label %60 unwind label %80

60:                                               ; preds = %50
  %61 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %13, i32 0, i32 0
  store ptr %59, ptr %61, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %14) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %15) #5
  %62 = call ptr @_ZNKSt8multisetIlSt4lessIlESaIlEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %4) #5
  %63 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %15, i32 0, i32 0
  store ptr %62, ptr %63, align 8
  %64 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIlEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %15) #5
  %65 = load i64, ptr %64, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %15) #5
  store i64 %65, ptr %14, align 8, !tbaa !5
  %66 = call ptr @_ZNKSt8multisetIlSt4lessIlESaIlEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %4) #5
  %67 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %16, i32 0, i32 0
  store ptr %66, ptr %67, align 8
  %68 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %16, i32 0, i32 0
  %69 = load ptr, ptr %68, align 8
  %70 = invoke ptr @_ZNSt8multisetIlSt4lessIlESaIlEE5eraseB5cxx11ESt23_Rb_tree_const_iteratorIlE(ptr noundef nonnull align 8 dereferenceable(48) %4, ptr %69)
          to label %71 unwind label %84

71:                                               ; preds = %60
  %72 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %17, i32 0, i32 0
  store ptr %70, ptr %72, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %18) #5
  %73 = load i64, ptr %10, align 8, !tbaa !5
  %74 = load i64, ptr %14, align 8, !tbaa !5
  %75 = add nsw i64 %73, %74
  %76 = sdiv i64 %75, 2
  store i64 %76, ptr %18, align 8, !tbaa !5
  %77 = invoke ptr @_ZNSt8multisetIlSt4lessIlESaIlEE6insertEOl(ptr noundef nonnull align 8 dereferenceable(48) %4, ptr noundef nonnull align 8 dereferenceable(8) %18)
          to label %78 unwind label %88

78:                                               ; preds = %71
  %79 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %19, i32 0, i32 0
  store ptr %77, ptr %79, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %18) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %14) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #5
  br label %47, !llvm.loop !11

80:                                               ; preds = %50
  %81 = landingpad { ptr, i32 }
          cleanup
  %82 = extractvalue { ptr, i32 } %81, 0
  store ptr %82, ptr %7, align 8
  %83 = extractvalue { ptr, i32 } %81, 1
  store i32 %83, ptr %8, align 4
  br label %93

84:                                               ; preds = %60
  %85 = landingpad { ptr, i32 }
          cleanup
  %86 = extractvalue { ptr, i32 } %85, 0
  store ptr %86, ptr %7, align 8
  %87 = extractvalue { ptr, i32 } %85, 1
  store i32 %87, ptr %8, align 4
  br label %92

88:                                               ; preds = %71
  %89 = landingpad { ptr, i32 }
          cleanup
  %90 = extractvalue { ptr, i32 } %89, 0
  store ptr %90, ptr %7, align 8
  %91 = extractvalue { ptr, i32 } %89, 1
  store i32 %91, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %18) #5
  br label %92

92:                                               ; preds = %88, %84
  call void @llvm.lifetime.end.p0(i64 8, ptr %14) #5
  br label %93

93:                                               ; preds = %92, %80
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #5
  br label %105

94:                                               ; preds = %47
  call void @llvm.lifetime.start.p0(i64 8, ptr %20) #5
  %95 = call ptr @_ZNKSt8multisetIlSt4lessIlESaIlEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %4) #5
  %96 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %20, i32 0, i32 0
  store ptr %95, ptr %96, align 8
  %97 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIlEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %20) #5
  %98 = load i64, ptr %97, align 8, !tbaa !5
  %99 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef %98)
          to label %100 unwind label %101

100:                                              ; preds = %94
  call void @llvm.lifetime.end.p0(i64 8, ptr %20) #5
  call void @_ZNSt8multisetIlSt4lessIlESaIlEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %4) #5
  call void @llvm.lifetime.end.p0(i64 48, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  br label %22, !llvm.loop !12

101:                                              ; preds = %94
  %102 = landingpad { ptr, i32 }
          cleanup
  %103 = extractvalue { ptr, i32 } %102, 0
  store ptr %103, ptr %7, align 8
  %104 = extractvalue { ptr, i32 } %102, 1
  store i32 %104, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %20) #5
  br label %105

105:                                              ; preds = %101, %93, %42
  call void @_ZNSt8multisetIlSt4lessIlESaIlEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %4) #5
  call void @llvm.lifetime.end.p0(i64 48, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #5
  br label %108

106:                                              ; preds = %22
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #5
  %107 = load i32, ptr %1, align 4
  ret i32 %107

108:                                              ; preds = %105
  %109 = load ptr, ptr %7, align 8
  %110 = load i32, ptr %8, align 4
  %111 = insertvalue { ptr, i32 } poison, ptr %109, 0
  %112 = insertvalue { ptr, i32 } %111, i32 %110, 1
  resume { ptr, i32 } %112
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt8multisetIlSt4lessIlESaIlEEC2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #3 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local ptr @_ZNSt8multisetIlSt4lessIlESaIlEE6insertERKl(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 8 dereferenceable(8)) #4 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt8multisetIlSt4lessIlESaIlEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt8multisetIlSt4lessIlESaIlEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIlEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local ptr @_ZNSt8multisetIlSt4lessIlESaIlEE5eraseB5cxx11ESt23_Rb_tree_const_iteratorIlE(ptr noundef nonnull align 8 dereferenceable(48), ptr) #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local ptr @_ZNSt8multisetIlSt4lessIlESaIlEE6insertEOl(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 8 dereferenceable(8)) #4 align 2

declare i32 @printf(ptr noundef, ...) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt8multisetIlSt4lessIlESaIlEED2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #3 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 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 #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 = { 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 = !{!"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::multiset" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<long, long, std::_Identity<long>, std::less<long>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<long, long, std::_Identity<long>, std::less<long>>::_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 }

@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 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 i64, align 8
  %2 = alloca i64, align 8
  %3 = alloca %"class.std::multiset", align 8
  %4 = alloca i64, align 8
  %5 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %6 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %7 = alloca i64, align 8
  %8 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #5
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %10 = load i64, ptr %1, align 8, !tbaa !5
  %11 = add nsw i64 %10, -1
  store i64 %11, ptr %1, align 8, !tbaa !5
  %.not21 = icmp eq i64 %10, 0
  br i1 %.not21, label %._crit_edge24, label %.lr.ph23

.lr.ph23:                                         ; preds = %0, %._crit_edge
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #5
  %12 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  call void @llvm.lifetime.start.p0(i64 48, ptr nonnull %3) #5
  call void @_ZNSt8multisetIlSt4lessIlESaIlEEC2Ev(ptr noundef nonnull align 8 dereferenceable(48) %3) #5
  %13 = load i64, ptr %2, align 8, !tbaa !5
  %14 = icmp sgt i64 %13, 0
  br i1 %14, label %.lr.ph, label %.preheader

.preheader:                                       ; preds = %19, %.lr.ph23
  %15 = call noundef i64 @_ZNKSt8multisetIlSt4lessIlESaIlEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48) %3) #5
  %16 = icmp ugt i64 %15, 1
  br i1 %16, label %.lr.ph20, label %._crit_edge

.lr.ph:                                           ; preds = %.lr.ph23, %19
  %.019 = phi i64 [ %20, %19 ], [ 0, %.lr.ph23 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #5
  %17 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %4)
  %18 = invoke ptr @_ZNSt8multisetIlSt4lessIlESaIlEE6insertERKl(ptr noundef nonnull align 8 dereferenceable(48) %3, ptr noundef nonnull align 8 dereferenceable(8) %4)
          to label %19 unwind label %23

19:                                               ; preds = %.lr.ph
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #5
  %20 = add nuw nsw i64 %.019, 1
  %21 = load i64, ptr %2, align 8, !tbaa !5
  %22 = icmp slt i64 %20, %21
  br i1 %22, label %.lr.ph, label %.preheader, !llvm.loop !9

23:                                               ; preds = %.lr.ph
  %24 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #5
  br label %55

.lr.ph20:                                         ; preds = %.preheader, %40
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #5
  %25 = call ptr @_ZNKSt8multisetIlSt4lessIlESaIlEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %3) #5
  store ptr %25, ptr %5, align 8
  %26 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIlEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %5) #5
  %27 = load i64, ptr %26, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #5
  %28 = call ptr @_ZNKSt8multisetIlSt4lessIlESaIlEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %3) #5
  %29 = invoke ptr @_ZNSt8multisetIlSt4lessIlESaIlEE5eraseB5cxx11ESt23_Rb_tree_const_iteratorIlE(ptr noundef nonnull align 8 dereferenceable(48) %3, ptr %28)
          to label %30 unwind label %43

30:                                               ; preds = %.lr.ph20
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #5
  %31 = call ptr @_ZNKSt8multisetIlSt4lessIlESaIlEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %3) #5
  store ptr %31, ptr %6, align 8
  %32 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIlEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #5
  %33 = load i64, ptr %32, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #5
  %34 = call ptr @_ZNKSt8multisetIlSt4lessIlESaIlEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %3) #5
  %35 = invoke ptr @_ZNSt8multisetIlSt4lessIlESaIlEE5eraseB5cxx11ESt23_Rb_tree_const_iteratorIlE(ptr noundef nonnull align 8 dereferenceable(48) %3, ptr %34)
          to label %36 unwind label %45

36:                                               ; preds = %30
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %7) #5
  %37 = add nsw i64 %33, %27
  %38 = sdiv i64 %37, 2
  store i64 %38, ptr %7, align 8, !tbaa !5
  %39 = invoke ptr @_ZNSt8multisetIlSt4lessIlESaIlEE6insertEOl(ptr noundef nonnull align 8 dereferenceable(48) %3, ptr noundef nonnull align 8 dereferenceable(8) %7)
          to label %40 unwind label %47

40:                                               ; preds = %36
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %7) #5
  %41 = call noundef i64 @_ZNKSt8multisetIlSt4lessIlESaIlEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48) %3) #5
  %42 = icmp ugt i64 %41, 1
  br i1 %42, label %.lr.ph20, label %._crit_edge, !llvm.loop !11

43:                                               ; preds = %.lr.ph20
  %44 = landingpad { ptr, i32 }
          cleanup
  br label %55

45:                                               ; preds = %30
  %46 = landingpad { ptr, i32 }
          cleanup
  br label %55

47:                                               ; preds = %36
  %48 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %7) #5
  br label %55

._crit_edge:                                      ; preds = %40, %.preheader
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %8) #5
  %49 = call ptr @_ZNKSt8multisetIlSt4lessIlESaIlEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %3) #5
  store ptr %49, ptr %8, align 8
  %50 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIlEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %8) #5
  %51 = load i64, ptr %50, align 8, !tbaa !5
  %52 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef %51)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %8) #5
  call void @_ZNSt8multisetIlSt4lessIlESaIlEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %3) #5
  call void @llvm.lifetime.end.p0(i64 48, ptr nonnull %3) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #5
  %53 = load i64, ptr %1, align 8, !tbaa !5
  %54 = add nsw i64 %53, -1
  store i64 %54, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %53, 0
  br i1 %.not, label %._crit_edge24, label %.lr.ph23, !llvm.loop !12

55:                                               ; preds = %43, %47, %45, %23
  %.pn17 = phi { ptr, i32 } [ %24, %23 ], [ %44, %43 ], [ %48, %47 ], [ %46, %45 ]
  call void @_ZNSt8multisetIlSt4lessIlESaIlEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %3) #5
  call void @llvm.lifetime.end.p0(i64 48, ptr nonnull %3) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #5
  resume { ptr, i32 } %.pn17

._crit_edge24:                                    ; preds = %._crit_edge, %0
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #5
  ret i32 0
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt8multisetIlSt4lessIlESaIlEEC2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #3 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local ptr @_ZNSt8multisetIlSt4lessIlESaIlEE6insertERKl(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 8 dereferenceable(8)) 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) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt8multisetIlSt4lessIlESaIlEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt8multisetIlSt4lessIlESaIlEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIlEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local ptr @_ZNSt8multisetIlSt4lessIlESaIlEE5eraseB5cxx11ESt23_Rb_tree_const_iteratorIlE(ptr noundef nonnull align 8 dereferenceable(48), ptr) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local ptr @_ZNSt8multisetIlSt4lessIlESaIlEE6insertEOl(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #4 align 2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt8multisetIlSt4lessIlESaIlEED2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #3 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nofree nounwind "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 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 #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 = { 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 = !{!"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,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass