; LLVM IR from ritikbanger/Hacktoberfest2022-DSA :: 30. CPP Programs (cses tree solution)

; 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::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator.2" = type { i8 }

@nn = external dso_local global i32, align 4
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@stdin = external global ptr, align 8
@.str.3 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [2 x i8], align 1
@stdout = external global ptr, align 8
@.str.5 = external hidden unnamed_addr constant [21 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3dfsRSt6vectorIS_IxSaIxEESaIS1_EEii(ptr noundef nonnull align 8 dereferenceable(24), i32 noundef, i32 noundef) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z4funcRSt6vectorIS_IxSaIxEESaIS1_EEii(ptr noundef nonnull align 8 dereferenceable(24), i32 noundef, i32 noundef) #1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #3 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca %"class.std::vector.0", align 8
  %6 = alloca %"class.std::allocator.2", align 1
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i64, align 8
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i64, align 8
  %13 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  %14 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %15 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %16 = getelementptr i8, ptr %15, i64 -24
  %17 = load i64, ptr %16, align 8
  %18 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %17
  %19 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %18, ptr noundef null)
  %20 = load ptr, ptr @_ZSt4cout, align 8, !tbaa !5
  %21 = getelementptr i8, ptr %20, i64 -24
  %22 = load i64, ptr %21, align 8
  %23 = getelementptr inbounds i8, ptr @_ZSt4cout, i64 %22
  %24 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %23, ptr noundef null)
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #6
  %25 = call i64 @clock() #6
  store i64 %25, ptr %2, align 8, !tbaa !8
  %26 = load ptr, ptr @stdin, align 8, !tbaa !11
  %27 = call ptr @freopen(ptr noundef @.str, ptr noundef @.str.2, ptr noundef %26)
  %28 = load ptr, ptr @stdout, align 8, !tbaa !11
  %29 = call ptr @freopen(ptr noundef @.str.3, ptr noundef @.str.4, ptr noundef %28)
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  store i32 1, ptr %3, align 4, !tbaa !13
  br label %30

30:                                               ; preds = %96, %0
  %31 = load i32, ptr %3, align 4, !tbaa !13
  %32 = add nsw i32 %31, -1
  store i32 %32, ptr %3, align 4, !tbaa !13
  %33 = icmp ne i32 %31, 0
  br i1 %33, label %34, label %103

34:                                               ; preds = %30
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  %35 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %4)
  call void @llvm.lifetime.start.p0(i64 24, ptr %5) #6
  %36 = load i32, ptr %4, align 4, !tbaa !13
  %37 = sext i32 %36 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr %6) #6
  call void @_ZNSaISt6vectorIxSaIxEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #6
  invoke void @_ZNSt6vectorIS_IxSaIxEESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %37, ptr noundef nonnull align 1 dereferenceable(1) %6)
          to label %38 unwind label %46

38:                                               ; preds = %34
  call void @_ZNSt15__new_allocatorISt6vectorIxSaIxEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #6
  store i64 0, ptr %9, align 8, !tbaa !15
  br label %39

39:                                               ; preds = %71, %38
  %40 = load i64, ptr %9, align 8, !tbaa !15
  %41 = load i32, ptr %4, align 4, !tbaa !13
  %42 = sub nsw i32 %41, 1
  %43 = sext i32 %42 to i64
  %44 = icmp slt i64 %40, %43
  br i1 %44, label %50, label %45

45:                                               ; preds = %39
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #6
  br label %87

46:                                               ; preds = %34
  %47 = landingpad { ptr, i32 }
          cleanup
  %48 = extractvalue { ptr, i32 } %47, 0
  store ptr %48, ptr %7, align 8
  %49 = extractvalue { ptr, i32 } %47, 1
  store i32 %49, ptr %8, align 4
  call void @_ZNSt15__new_allocatorISt6vectorIxSaIxEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #6
  br label %102

50:                                               ; preds = %39
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #6
  %51 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %10)
          to label %52 unwind label %74

52:                                               ; preds = %50
  %53 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %51, ptr noundef nonnull align 4 dereferenceable(4) %11)
          to label %54 unwind label %74

54:                                               ; preds = %52
  %55 = load i32, ptr %10, align 4, !tbaa !13
  %56 = sub nsw i32 %55, 1
  store i32 %56, ptr %10, align 4, !tbaa !13
  %57 = load i32, ptr %11, align 4, !tbaa !13
  %58 = sub nsw i32 %57, 1
  store i32 %58, ptr %11, align 4, !tbaa !13
  %59 = load i32, ptr %10, align 4, !tbaa !13
  %60 = sext i32 %59 to i64
  %61 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %60) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #6
  %62 = load i32, ptr %11, align 4, !tbaa !13
  %63 = sext i32 %62 to i64
  store i64 %63, ptr %12, align 8, !tbaa !15
  invoke void @_ZNSt6vectorIxSaIxEE9push_backEOx(ptr noundef nonnull align 8 dereferenceable(24) %61, ptr noundef nonnull align 8 dereferenceable(8) %12)
          to label %64 unwind label %78

64:                                               ; preds = %54
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #6
  %65 = load i32, ptr %11, align 4, !tbaa !13
  %66 = sext i32 %65 to i64
  %67 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %66) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #6
  %68 = load i32, ptr %10, align 4, !tbaa !13
  %69 = sext i32 %68 to i64
  store i64 %69, ptr %13, align 8, !tbaa !15
  invoke void @_ZNSt6vectorIxSaIxEE9push_backEOx(ptr noundef nonnull align 8 dereferenceable(24) %67, ptr noundef nonnull align 8 dereferenceable(8) %13)
          to label %70 unwind label %82

70:                                               ; preds = %64
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #6
  br label %71

71:                                               ; preds = %70
  %72 = load i64, ptr %9, align 8, !tbaa !15
  %73 = add nsw i64 %72, 1
  store i64 %73, ptr %9, align 8, !tbaa !15
  br label %39, !llvm.loop !17

74:                                               ; preds = %52, %50
  %75 = landingpad { ptr, i32 }
          cleanup
  %76 = extractvalue { ptr, i32 } %75, 0
  store ptr %76, ptr %7, align 8
  %77 = extractvalue { ptr, i32 } %75, 1
  store i32 %77, ptr %8, align 4
  br label %86

78:                                               ; preds = %54
  %79 = landingpad { ptr, i32 }
          cleanup
  %80 = extractvalue { ptr, i32 } %79, 0
  store ptr %80, ptr %7, align 8
  %81 = extractvalue { ptr, i32 } %79, 1
  store i32 %81, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #6
  br label %86

82:                                               ; preds = %64
  %83 = landingpad { ptr, i32 }
          cleanup
  %84 = extractvalue { ptr, i32 } %83, 0
  store ptr %84, ptr %7, align 8
  %85 = extractvalue { ptr, i32 } %83, 1
  store i32 %85, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #6
  br label %86

86:                                               ; preds = %82, %78, %74
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #6
  br label %101

87:                                               ; preds = %45
  %88 = load i32, ptr %4, align 4, !tbaa !13
  %89 = add nsw i32 %88, 1
  %90 = sdiv i32 %89, 2
  store i32 %90, ptr @nn, align 4, !tbaa !13
  invoke void @_Z3dfsRSt6vectorIS_IxSaIxEESaIS1_EEii(ptr noundef nonnull align 8 dereferenceable(24) %5, i32 noundef 0, i32 noundef -1)
          to label %91 unwind label %97

91:                                               ; preds = %87
  %92 = invoke noundef i32 @_Z4funcRSt6vectorIS_IxSaIxEESaIS1_EEii(ptr noundef nonnull align 8 dereferenceable(24) %5, i32 noundef 0, i32 noundef -1)
          to label %93 unwind label %97

93:                                               ; preds = %91
  %94 = add nsw i32 %92, 1
  %95 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %94)
          to label %96 unwind label %97

96:                                               ; preds = %93
  call void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  br label %30, !llvm.loop !19

97:                                               ; preds = %93, %91, %87
  %98 = landingpad { ptr, i32 }
          cleanup
  %99 = extractvalue { ptr, i32 } %98, 0
  store ptr %99, ptr %7, align 8
  %100 = extractvalue { ptr, i32 } %98, 1
  store i32 %100, ptr %8, align 4
  br label %101

101:                                              ; preds = %97, %86
  call void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #6
  br label %102

102:                                              ; preds = %101, %46
  call void @llvm.lifetime.end.p0(i64 24, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  br label %111

103:                                              ; preds = %30
  %104 = call i64 @clock() #6
  %105 = load i64, ptr %2, align 8, !tbaa !8
  %106 = sub nsw i64 %104, %105
  %107 = sitofp i64 %106 to double
  %108 = fdiv double %107, 1.000000e+06
  %109 = call i32 (ptr, ...) @printf(ptr noundef @.str.5, double noundef %108)
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  %110 = load i32, ptr %1, align 4
  ret i32 %110

111:                                              ; preds = %102
  %112 = load ptr, ptr %7, align 8
  %113 = load i32, ptr %8, align 4
  %114 = insertvalue { ptr, i32 } poison, ptr %112, 0
  %115 = insertvalue { ptr, i32 } %114, i32 %113, 1
  resume { ptr, i32 } %115
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) #4

; 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: nounwind
declare i64 @clock() #5

declare ptr @freopen(ptr noundef, ptr noundef, ptr noundef) #4

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaISt6vectorIxSaIxEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_IxSaIxEESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIxSaIxEE9push_backEOx(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

declare i32 @printf(ptr noundef, ...) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorISt6vectorIxSaIxEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 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 #4 = { "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 "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 = !{!"long", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"any pointer", !10, i64 0}
!13 = !{!14, !14, i64 0}
!14 = !{!"int", !10, i64 0}
!15 = !{!16, !16, i64 0}
!16 = !{!"long long", !10, i64 0}
!17 = distinct !{!17, !18}
!18 = !{!"llvm.loop.mustprogress"}
!19 = distinct !{!19, !18}


; 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::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator.2" = type { i8 }

@nn = external dso_local local_unnamed_addr global i32, align 4
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@stdin = external local_unnamed_addr global ptr, align 8
@.str.3 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [2 x i8], align 1
@stdout = external local_unnamed_addr global ptr, align 8
@.str.5 = external hidden unnamed_addr constant [21 x i8], align 1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3dfsRSt6vectorIS_IxSaIxEESaIS1_EEii(ptr noundef nonnull align 8 dereferenceable(24), i32 noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z4funcRSt6vectorIS_IxSaIxEESaIS1_EEii(ptr noundef nonnull align 8 dereferenceable(24), i32 noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca %"class.std::vector.0", align 8
  %3 = alloca %"class.std::allocator.2", align 1
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %9 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %10 = getelementptr i8, ptr %9, i64 -24
  %11 = load i64, ptr %10, align 8
  %12 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %11
  %13 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %12, ptr noundef null)
  %14 = load ptr, ptr @_ZSt4cout, align 8, !tbaa !5
  %15 = getelementptr i8, ptr %14, i64 -24
  %16 = load i64, ptr %15, align 8
  %17 = getelementptr inbounds i8, ptr @_ZSt4cout, i64 %16
  %18 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %17, ptr noundef null)
  %19 = tail call i64 @clock() #7
  %20 = load ptr, ptr @stdin, align 8, !tbaa !8
  %21 = tail call ptr @freopen(ptr noundef nonnull @.str, ptr noundef nonnull @.str.2, ptr noundef %20)
  %22 = load ptr, ptr @stdout, align 8, !tbaa !8
  %23 = tail call ptr @freopen(ptr noundef nonnull @.str.3, ptr noundef nonnull @.str.4, ptr noundef %22)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #7
  %24 = 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 24, ptr nonnull %2) #7
  %25 = load i32, ptr %1, align 4, !tbaa !11
  %26 = sext i32 %25 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %3) #7
  call void @_ZNSaISt6vectorIxSaIxEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3) #7
  invoke void @_ZNSt6vectorIS_IxSaIxEESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %26, ptr noundef nonnull align 1 dereferenceable(1) %3)
          to label %27 unwind label %32

27:                                               ; preds = %0
  call void @_ZNSt15__new_allocatorISt6vectorIxSaIxEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %3) #7
  %28 = load i32, ptr %1, align 4, !tbaa !11
  %29 = icmp sgt i32 %28, 1
  br i1 %29, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %52, %27
  %.lcssa = phi i32 [ %28, %27 ], [ %54, %52 ]
  %30 = add nsw i32 %.lcssa, 1
  %31 = sdiv i32 %30, 2
  store i32 %31, ptr @nn, align 4, !tbaa !11
  invoke void @_Z3dfsRSt6vectorIS_IxSaIxEESaIS1_EEii(ptr noundef nonnull align 8 dereferenceable(24) %2, i32 noundef 0, i32 noundef -1)
          to label %65 unwind label %76

32:                                               ; preds = %0
  %33 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorISt6vectorIxSaIxEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %3) #7
  br label %79

.lr.ph:                                           ; preds = %27, %52
  %.017 = phi i64 [ %53, %52 ], [ 0, %27 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #7
  %34 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %4)
          to label %35 unwind label %58

35:                                               ; preds = %.lr.ph
  %36 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %34, ptr noundef nonnull align 4 dereferenceable(4) %5)
          to label %37 unwind label %58

37:                                               ; preds = %35
  %38 = load i32, ptr %4, align 4, !tbaa !11
  %39 = add nsw i32 %38, -1
  store i32 %39, ptr %4, align 4, !tbaa !11
  %40 = load i32, ptr %5, align 4, !tbaa !11
  %41 = add nsw i32 %40, -1
  store i32 %41, ptr %5, align 4, !tbaa !11
  %42 = sext i32 %39 to i64
  %43 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %42) #7
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #7
  %44 = load i32, ptr %5, align 4, !tbaa !11
  %45 = sext i32 %44 to i64
  store i64 %45, ptr %6, align 8, !tbaa !13
  invoke void @_ZNSt6vectorIxSaIxEE9push_backEOx(ptr noundef nonnull align 8 dereferenceable(24) %43, ptr noundef nonnull align 8 dereferenceable(8) %6)
          to label %46 unwind label %60

46:                                               ; preds = %37
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #7
  %47 = load i32, ptr %5, align 4, !tbaa !11
  %48 = sext i32 %47 to i64
  %49 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %48) #7
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %7) #7
  %50 = load i32, ptr %4, align 4, !tbaa !11
  %51 = sext i32 %50 to i64
  store i64 %51, ptr %7, align 8, !tbaa !13
  invoke void @_ZNSt6vectorIxSaIxEE9push_backEOx(ptr noundef nonnull align 8 dereferenceable(24) %49, ptr noundef nonnull align 8 dereferenceable(8) %7)
          to label %52 unwind label %62

52:                                               ; preds = %46
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %7) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #7
  %53 = add nuw nsw i64 %.017, 1
  %54 = load i32, ptr %1, align 4, !tbaa !11
  %55 = add nsw i32 %54, -1
  %56 = sext i32 %55 to i64
  %57 = icmp slt i64 %53, %56
  br i1 %57, label %.lr.ph, label %._crit_edge, !llvm.loop !15

58:                                               ; preds = %35, %.lr.ph
  %59 = landingpad { ptr, i32 }
          cleanup
  br label %64

60:                                               ; preds = %37
  %61 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #7
  br label %64

62:                                               ; preds = %46
  %63 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %7) #7
  br label %64

64:                                               ; preds = %62, %60, %58
  %.pn = phi { ptr, i32 } [ %63, %62 ], [ %61, %60 ], [ %59, %58 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #7
  br label %78

65:                                               ; preds = %._crit_edge
  %66 = invoke noundef i32 @_Z4funcRSt6vectorIS_IxSaIxEESaIS1_EEii(ptr noundef nonnull align 8 dereferenceable(24) %2, i32 noundef 0, i32 noundef -1)
          to label %67 unwind label %76

67:                                               ; preds = %65
  %68 = add nsw i32 %66, 1
  %69 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %68)
          to label %70 unwind label %76

70:                                               ; preds = %67
  call void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #7
  %71 = call i64 @clock() #7
  %72 = sub nsw i64 %71, %19
  %73 = sitofp i64 %72 to double
  %74 = fdiv double %73, 1.000000e+06
  %75 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5, double noundef %74)
  ret i32 0

76:                                               ; preds = %67, %65, %._crit_edge
  %77 = landingpad { ptr, i32 }
          cleanup
  br label %78

78:                                               ; preds = %76, %64
  %.pn.pn = phi { ptr, i32 } [ %.pn, %64 ], [ %77, %76 ]
  call void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #7
  br label %79

79:                                               ; preds = %78, %32
  %.pn.pn.pn = phi { ptr, i32 } [ %.pn.pn, %78 ], [ %33, %32 ]
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #7
  resume { ptr, i32 } %.pn.pn.pn
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) local_unnamed_addr #4

; 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: nounwind
declare i64 @clock() local_unnamed_addr #5

declare ptr @freopen(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #4

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 #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaISt6vectorIxSaIxEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_IxSaIxEESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIxSaIxEE9push_backEOx(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #6

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorISt6vectorIxSaIxEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 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 #4 = { "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 "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 = { 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 #7 = { 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 = !{!"any pointer", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !10, i64 0}
!13 = !{!14, !14, i64 0}
!14 = !{!"long long", !10, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


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