; LLVM IR from DionysiosB/CodeForces :: 0500-0599 (594A-WarriorAndArcher)

; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<long, std::allocator<long>>::_Vector_impl" }
%"struct.std::_Vector_base<long, std::allocator<long>>::_Vector_impl" = type { %"struct.std::_Vector_base<long, std::allocator<long>>::_Vector_impl_data" }
%"struct.std::_Vector_base<long, std::allocator<long>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator" = type { i8 }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 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 %"class.std::vector", align 8
  %4 = alloca %"class.std::allocator", align 1
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i64, align 8
  %8 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %9 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %10 = alloca i64, align 8
  %11 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #6
  %12 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  call void @llvm.lifetime.start.p0(i64 24, ptr %3) #6
  %13 = load i64, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %4) #6
  call void @_ZNSaIlEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #6
  invoke void @_ZNSt6vectorIlSaIlEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %13, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %14 unwind label %20

14:                                               ; preds = %0
  call void @_ZNSt15__new_allocatorIlED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #6
  store i64 0, ptr %7, align 8, !tbaa !5
  br label %15

15:                                               ; preds = %29, %14
  %16 = load i64, ptr %7, align 8, !tbaa !5
  %17 = load i64, ptr %2, align 8, !tbaa !5
  %18 = icmp slt i64 %16, %17
  br i1 %18, label %24, label %19

19:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  br label %36

20:                                               ; preds = %0
  %21 = landingpad { ptr, i32 }
          cleanup
  %22 = extractvalue { ptr, i32 } %21, 0
  store ptr %22, ptr %5, align 8
  %23 = extractvalue { ptr, i32 } %21, 1
  store i32 %23, ptr %6, align 4
  call void @_ZNSt15__new_allocatorIlED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #6
  br label %101

24:                                               ; preds = %15
  %25 = load i64, ptr %7, align 8, !tbaa !5
  %26 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %25) #6
  %27 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %26)
          to label %28 unwind label %32

28:                                               ; preds = %24
  br label %29

29:                                               ; preds = %28
  %30 = load i64, ptr %7, align 8, !tbaa !5
  %31 = add nsw i64 %30, 1
  store i64 %31, ptr %7, align 8, !tbaa !5
  br label %15, !llvm.loop !9

32:                                               ; preds = %24
  %33 = landingpad { ptr, i32 }
          cleanup
  %34 = extractvalue { ptr, i32 } %33, 0
  store ptr %34, ptr %5, align 8
  %35 = extractvalue { ptr, i32 } %33, 1
  store i32 %35, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  br label %100

36:                                               ; preds = %19
  %37 = call ptr @_ZNSt6vectorIlSaIlEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  %38 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %8, i32 0, i32 0
  store ptr %37, ptr %38, align 8
  %39 = call ptr @_ZNSt6vectorIlSaIlEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  %40 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %9, i32 0, i32 0
  store ptr %39, ptr %40, align 8
  %41 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %8, i32 0, i32 0
  %42 = load ptr, ptr %41, align 8
  %43 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %9, i32 0, i32 0
  %44 = load ptr, ptr %43, align 8
  invoke void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPlSt6vectorIlSaIlEEEEEvT_S7_(ptr %42, ptr %44)
          to label %45 unwind label %59

45:                                               ; preds = %36
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #6
  %46 = load i64, ptr %2, align 8, !tbaa !5
  %47 = sub nsw i64 %46, 1
  %48 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %47) #6
  %49 = load i64, ptr %48, align 8, !tbaa !5
  %50 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef 0) #6
  %51 = load i64, ptr %50, align 8, !tbaa !5
  %52 = sub nsw i64 %49, %51
  store i64 %52, ptr %10, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #6
  store i64 0, ptr %11, align 8, !tbaa !5
  br label %53

53:                                               ; preds = %88, %45
  %54 = load i64, ptr %11, align 8, !tbaa !5
  %55 = load i64, ptr %2, align 8, !tbaa !5
  %56 = sdiv i64 %55, 2
  %57 = icmp slt i64 %54, %56
  br i1 %57, label %63, label %58

58:                                               ; preds = %53
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #6
  br label %91

59:                                               ; preds = %36
  %60 = landingpad { ptr, i32 }
          cleanup
  %61 = extractvalue { ptr, i32 } %60, 0
  store ptr %61, ptr %5, align 8
  %62 = extractvalue { ptr, i32 } %60, 1
  store i32 %62, ptr %6, align 4
  br label %100

63:                                               ; preds = %53
  %64 = load i64, ptr %10, align 8, !tbaa !5
  %65 = load i64, ptr %11, align 8, !tbaa !5
  %66 = load i64, ptr %2, align 8, !tbaa !5
  %67 = sdiv i64 %66, 2
  %68 = add nsw i64 %65, %67
  %69 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %68) #6
  %70 = load i64, ptr %69, align 8, !tbaa !5
  %71 = load i64, ptr %11, align 8, !tbaa !5
  %72 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %71) #6
  %73 = load i64, ptr %72, align 8, !tbaa !5
  %74 = sub nsw i64 %70, %73
  %75 = icmp sgt i64 %64, %74
  br i1 %75, label %76, label %87

76:                                               ; preds = %63
  %77 = load i64, ptr %11, align 8, !tbaa !5
  %78 = load i64, ptr %2, align 8, !tbaa !5
  %79 = sdiv i64 %78, 2
  %80 = add nsw i64 %77, %79
  %81 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %80) #6
  %82 = load i64, ptr %81, align 8, !tbaa !5
  %83 = load i64, ptr %11, align 8, !tbaa !5
  %84 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %83) #6
  %85 = load i64, ptr %84, align 8, !tbaa !5
  %86 = sub nsw i64 %82, %85
  store i64 %86, ptr %10, align 8, !tbaa !5
  br label %87

87:                                               ; preds = %76, %63
  br label %88

88:                                               ; preds = %87
  %89 = load i64, ptr %11, align 8, !tbaa !5
  %90 = add nsw i64 %89, 1
  store i64 %90, ptr %11, align 8, !tbaa !5
  br label %53, !llvm.loop !11

91:                                               ; preds = %58
  %92 = load i64, ptr %10, align 8, !tbaa !5
  %93 = invoke i32 (ptr, ...) @printf(ptr noundef @.str, i64 noundef %92)
          to label %94 unwind label %96

94:                                               ; preds = %91
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #6
  call void @_ZNSt6vectorIlSaIlEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  %95 = load i32, ptr %1, align 4
  ret i32 %95

96:                                               ; preds = %91
  %97 = landingpad { ptr, i32 }
          cleanup
  %98 = extractvalue { ptr, i32 } %97, 0
  store ptr %98, ptr %5, align 8
  %99 = extractvalue { ptr, i32 } %97, 1
  store i32 %99, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #6
  br label %100

100:                                              ; preds = %96, %59, %32
  call void @_ZNSt6vectorIlSaIlEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  br label %101

101:                                              ; preds = %100, %20
  call void @llvm.lifetime.end.p0(i64 24, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  br label %102

102:                                              ; preds = %101
  %103 = load ptr, ptr %5, align 8
  %104 = load i32, ptr %6, align 4
  %105 = insertvalue { ptr, i32 } poison, ptr %103, 0
  %106 = insertvalue { ptr, i32 } %105, i32 %104, 1
  resume { ptr, i32 } %106
}

; 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 @_ZNSaIlEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIlSaIlEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #4 align 2

declare i32 @__gxx_personality_v0(...)

; 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 nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPlSt6vectorIlSaIlEEEEEvT_S7_(ptr, ptr) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIlSaIlEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIlSaIlEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIlSaIlEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIlED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) 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 = { 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 = !{!"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}


; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<long, std::allocator<long>>::_Vector_impl" }
%"struct.std::_Vector_base<long, std::allocator<long>>::_Vector_impl" = type { %"struct.std::_Vector_base<long, std::allocator<long>>::_Vector_impl_data" }
%"struct.std::_Vector_base<long, std::allocator<long>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator" = type { i8 }

@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 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 %"class.std::vector", align 8
  %3 = alloca %"class.std::allocator", align 1
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #6
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %2) #6
  %5 = load i64, ptr %1, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %3) #6
  call void @_ZNSaIlEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3) #6
  invoke void @_ZNSt6vectorIlSaIlEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %5, ptr noundef nonnull align 1 dereferenceable(1) %3)
          to label %6 unwind label %11

6:                                                ; preds = %0
  call void @_ZNSt15__new_allocatorIlED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %3) #6
  %7 = load i64, ptr %1, align 8, !tbaa !5
  %8 = icmp sgt i64 %7, 0
  br i1 %8, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %6
  %9 = call ptr @_ZNSt6vectorIlSaIlEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  %10 = call ptr @_ZNSt6vectorIlSaIlEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  invoke void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPlSt6vectorIlSaIlEEEEEvT_S7_(ptr %9, ptr %10)
          to label %18 unwind label %30

11:                                               ; preds = %0
  %12 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIlED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %3) #6
  br label %54

.lr.ph:                                           ; preds = %6, %.lr.ph
  %.01620 = phi i64 [ %15, %.lr.ph ], [ 0, %6 ]
  %13 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %.01620) #6
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %13)
  %15 = add nuw nsw i64 %.01620, 1
  %16 = load i64, ptr %1, align 8, !tbaa !5
  %17 = icmp slt i64 %15, %16
  br i1 %17, label %.lr.ph, label %._crit_edge, !llvm.loop !9

18:                                               ; preds = %._crit_edge
  %19 = load i64, ptr %1, align 8, !tbaa !5
  %20 = add nsw i64 %19, -1
  %21 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %20) #6
  %22 = load i64, ptr %21, align 8, !tbaa !5
  %23 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef 0) #6
  %24 = load i64, ptr %23, align 8, !tbaa !5
  %25 = sub nsw i64 %22, %24
  %26 = load i64, ptr %1, align 8, !tbaa !5
  %27 = icmp sgt i64 %26, 1
  br i1 %27, label %.lr.ph24.preheader, label %._crit_edge25

.lr.ph24.preheader:                               ; preds = %18
  %28 = lshr i64 %26, 1
  br label %.lr.ph24

._crit_edge25:                                    ; preds = %49, %18
  %.014.lcssa = phi i64 [ %25, %18 ], [ %.1, %49 ]
  %29 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i64 noundef %.014.lcssa)
  call void @_ZNSt6vectorIlSaIlEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #6
  ret i32 0

30:                                               ; preds = %._crit_edge
  %31 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt6vectorIlSaIlEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  br label %54

.lr.ph24:                                         ; preds = %.lr.ph24.preheader, %49
  %32 = phi i64 [ %52, %49 ], [ %28, %.lr.ph24.preheader ]
  %.022 = phi i64 [ %50, %49 ], [ 0, %.lr.ph24.preheader ]
  %.01421 = phi i64 [ %.1, %49 ], [ %25, %.lr.ph24.preheader ]
  %33 = add nsw i64 %32, %.022
  %34 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %33) #6
  %35 = load i64, ptr %34, align 8, !tbaa !5
  %36 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %.022) #6
  %37 = load i64, ptr %36, align 8, !tbaa !5
  %38 = sub nsw i64 %35, %37
  %39 = icmp sgt i64 %.01421, %38
  br i1 %39, label %40, label %49

40:                                               ; preds = %.lr.ph24
  %41 = load i64, ptr %1, align 8, !tbaa !5
  %42 = sdiv i64 %41, 2
  %43 = add nsw i64 %42, %.022
  %44 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %43) #6
  %45 = load i64, ptr %44, align 8, !tbaa !5
  %46 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %.022) #6
  %47 = load i64, ptr %46, align 8, !tbaa !5
  %48 = sub nsw i64 %45, %47
  br label %49

49:                                               ; preds = %.lr.ph24, %40
  %.1 = phi i64 [ %48, %40 ], [ %.01421, %.lr.ph24 ]
  %50 = add nuw nsw i64 %.022, 1
  %51 = load i64, ptr %1, align 8, !tbaa !5
  %52 = sdiv i64 %51, 2
  %53 = icmp slt i64 %50, %52
  br i1 %53, label %.lr.ph24, label %._crit_edge25, !llvm.loop !11

54:                                               ; preds = %30, %11
  %.pn = phi { ptr, i32 } [ %31, %30 ], [ %12, %11 ]
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #6
  resume { ptr, i32 } %.pn
}

; 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 @_ZNSaIlEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIlSaIlEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #4 align 2

declare i32 @__gxx_personality_v0(...)

; 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 nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPlSt6vectorIlSaIlEEEEEvT_S7_(ptr, ptr) local_unnamed_addr #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIlSaIlEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIlSaIlEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 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 @_ZNSt6vectorIlSaIlEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIlED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) 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 = { 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 = !{!"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}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass