; LLVM IR from kazunetakahashi/atcoder :: 2017/0715_ARC078 (E)

; 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::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }

@.str.5 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z5flushx(i64 noundef) #0

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

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z6answerx(i64 noundef) #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #2 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 i32, align 4
  %6 = alloca %"class.std::__cxx11::basic_string", align 8
  %7 = alloca %"class.std::__cxx11::basic_string", align 8
  %8 = alloca %"class.std::__cxx11::basic_string", align 8
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca %"class.std::__cxx11::basic_string", align 8
  %12 = alloca i64, align 8
  %13 = alloca %"class.std::__cxx11::basic_string", align 8
  %14 = alloca %"class.std::__cxx11::basic_string", align 8
  %15 = alloca %"class.std::__cxx11::basic_string", align 8
  %16 = alloca i64, align 8
  %17 = alloca i64, align 8
  %18 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #6
  store i64 0, ptr %2, align 8, !tbaa !5
  br label %19

19:                                               ; preds = %81, %0
  %20 = load i64, ptr %2, align 8, !tbaa !5
  %21 = icmp slt i64 %20, 1000000000
  br i1 %21, label %22, label %92

22:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  store i32 9, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  %23 = load i64, ptr %2, align 8, !tbaa !5
  %24 = icmp eq i64 %23, 0
  %25 = zext i1 %24 to i64
  %26 = select i1 %24, i32 0, i32 -1
  store i32 %26, ptr %4, align 4, !tbaa !9
  br label %27

27:                                               ; preds = %73, %22
  %28 = load i32, ptr %3, align 4, !tbaa !9
  %29 = load i32, ptr %4, align 4, !tbaa !9
  %30 = sub nsw i32 %28, %29
  %31 = icmp sgt i32 %30, 1
  br i1 %31, label %32, label %76

32:                                               ; preds = %27
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #6
  %33 = load i32, ptr %3, align 4, !tbaa !9
  %34 = load i32, ptr %4, align 4, !tbaa !9
  %35 = add nsw i32 %33, %34
  %36 = sdiv i32 %35, 2
  store i32 %36, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 32, ptr %6) #6
  call void @llvm.lifetime.start.p0(i64 32, ptr %7) #6
  %37 = load i64, ptr %2, align 8, !tbaa !5
  call void @_ZNSt7__cxx119to_stringEx(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %7, i64 noundef %37)
  call void @llvm.lifetime.start.p0(i64 32, ptr %8) #6
  %38 = load i32, ptr %5, align 4, !tbaa !9
  call void @_ZNSt7__cxx119to_stringEi(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %8, i32 noundef %38) #6
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_S9_(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %6, ptr noundef nonnull align 8 dereferenceable(32) %7, ptr noundef nonnull align 8 dereferenceable(32) %8)
          to label %39 unwind label %47

39:                                               ; preds = %32
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %8) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %8) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %7) #6
  br label %40

40:                                               ; preds = %45, %39
  %41 = invoke noundef i64 @_ZNSt7__cxx115stollERKNS_12basic_stringIcSt11char_traitsIcESaIcEEEPmi(ptr noundef nonnull align 8 dereferenceable(32) %6, ptr noundef null, i32 noundef 10)
          to label %42 unwind label %51

42:                                               ; preds = %40
  %43 = icmp sle i64 %41, 1000000000
  br i1 %43, label %44, label %59

44:                                               ; preds = %42
  call void @llvm.lifetime.start.p0(i64 32, ptr %11) #6
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EERKS8_PKS5_(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %11, ptr noundef nonnull align 8 dereferenceable(32) %6, ptr noundef @.str.5)
          to label %45 unwind label %55

45:                                               ; preds = %44
  %46 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32) %6, ptr noundef nonnull align 8 dereferenceable(32) %11) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %11) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %11) #6
  br label %40, !llvm.loop !11

47:                                               ; preds = %32
  %48 = landingpad { ptr, i32 }
          cleanup
  %49 = extractvalue { ptr, i32 } %48, 0
  store ptr %49, ptr %9, align 8
  %50 = extractvalue { ptr, i32 } %48, 1
  store i32 %50, ptr %10, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %8) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %8) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %7) #6
  br label %75

51:                                               ; preds = %40
  %52 = landingpad { ptr, i32 }
          cleanup
  %53 = extractvalue { ptr, i32 } %52, 0
  store ptr %53, ptr %9, align 8
  %54 = extractvalue { ptr, i32 } %52, 1
  store i32 %54, ptr %10, align 4
  br label %74

55:                                               ; preds = %44
  %56 = landingpad { ptr, i32 }
          cleanup
  %57 = extractvalue { ptr, i32 } %56, 0
  store ptr %57, ptr %9, align 8
  %58 = extractvalue { ptr, i32 } %56, 1
  store i32 %58, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 32, ptr %11) #6
  br label %74

59:                                               ; preds = %42
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #6
  %60 = invoke noundef i64 @_ZNSt7__cxx115stollERKNS_12basic_stringIcSt11char_traitsIcESaIcEEEPmi(ptr noundef nonnull align 8 dereferenceable(32) %6, ptr noundef null, i32 noundef 10)
          to label %61 unwind label %67

61:                                               ; preds = %59
  store i64 %60, ptr %12, align 8, !tbaa !5
  %62 = load i64, ptr %12, align 8, !tbaa !5
  %63 = invoke noundef zeroext i1 @_Z5flushx(i64 noundef %62)
          to label %64 unwind label %67

64:                                               ; preds = %61
  br i1 %63, label %65, label %71

65:                                               ; preds = %64
  %66 = load i32, ptr %5, align 4, !tbaa !9
  store i32 %66, ptr %3, align 4, !tbaa !9
  br label %73

67:                                               ; preds = %61, %59
  %68 = landingpad { ptr, i32 }
          cleanup
  %69 = extractvalue { ptr, i32 } %68, 0
  store ptr %69, ptr %9, align 8
  %70 = extractvalue { ptr, i32 } %68, 1
  store i32 %70, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #6
  br label %74

71:                                               ; preds = %64
  %72 = load i32, ptr %5, align 4, !tbaa !9
  store i32 %72, ptr %4, align 4, !tbaa !9
  br label %73

73:                                               ; preds = %71, %65
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  br label %27, !llvm.loop !13

74:                                               ; preds = %67, %55, %51
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #6
  br label %75

75:                                               ; preds = %74, %47
  call void @llvm.lifetime.end.p0(i64 32, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  br label %91

76:                                               ; preds = %27
  call void @llvm.lifetime.start.p0(i64 32, ptr %13) #6
  call void @llvm.lifetime.start.p0(i64 32, ptr %14) #6
  %77 = load i64, ptr %2, align 8, !tbaa !5
  call void @_ZNSt7__cxx119to_stringEx(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %14, i64 noundef %77)
  call void @llvm.lifetime.start.p0(i64 32, ptr %15) #6
  %78 = load i32, ptr %3, align 4, !tbaa !9
  call void @_ZNSt7__cxx119to_stringEi(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %15, i32 noundef %78) #6
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_S9_(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %13, ptr noundef nonnull align 8 dereferenceable(32) %14, ptr noundef nonnull align 8 dereferenceable(32) %15)
          to label %79 unwind label %82

79:                                               ; preds = %76
  %80 = invoke noundef i64 @_ZNSt7__cxx115stollERKNS_12basic_stringIcSt11char_traitsIcESaIcEEEPmi(ptr noundef nonnull align 8 dereferenceable(32) %13, ptr noundef null, i32 noundef 10)
          to label %81 unwind label %86

81:                                               ; preds = %79
  store i64 %80, ptr %2, align 8, !tbaa !5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %13) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %15) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %15) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %14) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %14) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %13) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  br label %19, !llvm.loop !14

82:                                               ; preds = %76
  %83 = landingpad { ptr, i32 }
          cleanup
  %84 = extractvalue { ptr, i32 } %83, 0
  store ptr %84, ptr %9, align 8
  %85 = extractvalue { ptr, i32 } %83, 1
  store i32 %85, ptr %10, align 4
  br label %90

86:                                               ; preds = %79
  %87 = landingpad { ptr, i32 }
          cleanup
  %88 = extractvalue { ptr, i32 } %87, 0
  store ptr %88, ptr %9, align 8
  %89 = extractvalue { ptr, i32 } %87, 1
  store i32 %89, ptr %10, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %13) #6
  br label %90

90:                                               ; preds = %86, %82
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %15) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %15) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %14) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %14) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %13) #6
  br label %91

91:                                               ; preds = %90, %75
  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 %135

92:                                               ; preds = %19
  br label %93

93:                                               ; preds = %131, %92
  %94 = load i64, ptr %2, align 8, !tbaa !5
  %95 = srem i64 %94, 10
  %96 = icmp eq i64 %95, 0
  br i1 %96, label %97, label %132

97:                                               ; preds = %93
  call void @llvm.lifetime.start.p0(i64 8, ptr %16) #6
  %98 = load i64, ptr %2, align 8, !tbaa !5
  %99 = sdiv i64 %98, 10
  %100 = add nsw i64 %99, 1
  store i64 %100, ptr %16, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %17) #6
  %101 = load i64, ptr %16, align 8, !tbaa !5
  store i64 %101, ptr %17, align 8, !tbaa !5
  br label %102

102:                                              ; preds = %106, %97
  %103 = load i64, ptr %17, align 8, !tbaa !5
  %104 = srem i64 %103, 10
  %105 = icmp eq i64 %104, 0
  br i1 %105, label %106, label %109

106:                                              ; preds = %102
  %107 = load i64, ptr %17, align 8, !tbaa !5
  %108 = sdiv i64 %107, 10
  store i64 %108, ptr %17, align 8, !tbaa !5
  br label %102, !llvm.loop !15

109:                                              ; preds = %102
  %110 = load i64, ptr %17, align 8, !tbaa !5
  %111 = icmp ne i64 %110, 1
  br i1 %111, label %112, label %120

112:                                              ; preds = %109
  %113 = load i64, ptr %16, align 8, !tbaa !5
  %114 = call noundef zeroext i1 @_Z5flushx(i64 noundef %113)
  br i1 %114, label %115, label %118

115:                                              ; preds = %112
  %116 = load i64, ptr %2, align 8, !tbaa !5
  %117 = sdiv i64 %116, 10
  store i64 %117, ptr %2, align 8, !tbaa !5
  br label %119

118:                                              ; preds = %112
  store i32 9, ptr %18, align 4
  br label %129

119:                                              ; preds = %115
  br label %128

120:                                              ; preds = %109
  %121 = load i64, ptr %16, align 8, !tbaa !5
  %122 = call noundef zeroext i1 @_Z5flushx(i64 noundef %121)
  br i1 %122, label %126, label %123

123:                                              ; preds = %120
  %124 = load i64, ptr %2, align 8, !tbaa !5
  %125 = sdiv i64 %124, 10
  store i64 %125, ptr %2, align 8, !tbaa !5
  br label %127

126:                                              ; preds = %120
  store i32 9, ptr %18, align 4
  br label %129

127:                                              ; preds = %123
  br label %128

128:                                              ; preds = %127, %119
  store i32 0, ptr %18, align 4
  br label %129

129:                                              ; preds = %128, %126, %118
  call void @llvm.lifetime.end.p0(i64 8, ptr %17) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #6
  %130 = load i32, ptr %18, align 4
  switch i32 %130, label %140 [
    i32 0, label %131
    i32 9, label %132
  ]

131:                                              ; preds = %129
  br label %93, !llvm.loop !16

132:                                              ; preds = %129, %93
  %133 = load i64, ptr %2, align 8, !tbaa !5
  call void @_Z6answerx(i64 noundef %133)
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  %134 = load i32, ptr %1, align 4
  ret i32 %134

135:                                              ; preds = %91
  %136 = load ptr, ptr %9, align 8
  %137 = load i32, ptr %10, align 4
  %138 = insertvalue { ptr, i32 } poison, ptr %136, 0
  %139 = insertvalue { ptr, i32 } %138, i32 %137, 1
  resume { ptr, i32 } %139

140:                                              ; preds = %129
  unreachable
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_S9_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) #3

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZNSt7__cxx119to_stringEx(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, i64 noundef) #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt7__cxx119to_stringEi(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, i32 noundef) #4

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #5 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i64 @_ZNSt7__cxx115stollERKNS_12basic_stringIcSt11char_traitsIcESaIcEEEPmi(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, i32 noundef) #3

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EERKS8_PKS5_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) #3

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) #5 align 2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { 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 #4 = { inlinehint 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 #5 = { 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 #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 long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !12}
!15 = distinct !{!15, !12}
!16 = distinct !{!16, !12}


; 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::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }

@.str.5 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z5flushx(i64 noundef) local_unnamed_addr #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: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z6answerx(i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #2 personality ptr @__gxx_personality_v0 {
  %1 = alloca %"class.std::__cxx11::basic_string", align 8
  %2 = alloca %"class.std::__cxx11::basic_string", align 8
  %3 = alloca %"class.std::__cxx11::basic_string", align 8
  %4 = alloca %"class.std::__cxx11::basic_string", align 8
  %5 = alloca %"class.std::__cxx11::basic_string", align 8
  %6 = alloca %"class.std::__cxx11::basic_string", align 8
  %7 = alloca %"class.std::__cxx11::basic_string", align 8
  br label %.lr.ph.preheader

.preheader:                                       ; preds = %41
  %8 = urem i64 %40, 10
  %9 = icmp eq i64 %8, 0
  br i1 %9, label %.lr.ph68, label %.thread

.lr.ph.preheader:                                 ; preds = %41, %0
  %.02861 = phi i64 [ 0, %0 ], [ %40, %41 ]
  %10 = icmp ne i64 %.02861, 0
  %11 = sext i1 %10 to i32
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %32
  %.02960 = phi i32 [ %..029, %32 ], [ 9, %.lr.ph.preheader ]
  %.03959 = phi i32 [ %.039., %32 ], [ %11, %.lr.ph.preheader ]
  %12 = add nsw i32 %.02960, %.03959
  %13 = sdiv i32 %12, 2
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %1) #6
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %2) #6
  call void @_ZNSt7__cxx119to_stringEx(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %2, i64 noundef %.02861)
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %3) #6
  call void @_ZNSt7__cxx119to_stringEi(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %3, i32 noundef %13) #6
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_S9_(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %1, ptr noundef nonnull align 8 dereferenceable(32) %2, ptr noundef nonnull align 8 dereferenceable(32) %3)
          to label %14 unwind label %22

14:                                               ; preds = %.lr.ph
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %3) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %2) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %2) #6
  br label %15

15:                                               ; preds = %20, %14
  %16 = invoke noundef i64 @_ZNSt7__cxx115stollERKNS_12basic_stringIcSt11char_traitsIcESaIcEEEPmi(ptr noundef nonnull align 8 dereferenceable(32) %1, ptr noundef null, i32 noundef 10)
          to label %17 unwind label %24

17:                                               ; preds = %15
  %18 = icmp slt i64 %16, 1000000001
  br i1 %18, label %19, label %28

19:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %4) #6
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EERKS8_PKS5_(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %4, ptr noundef nonnull align 8 dereferenceable(32) %1, ptr noundef nonnull @.str.5)
          to label %20 unwind label %26

20:                                               ; preds = %19
  %21 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32) %1, ptr noundef nonnull align 8 dereferenceable(32) %4) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #6
  br label %15, !llvm.loop !5

22:                                               ; preds = %.lr.ph
  %23 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %3) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %2) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %2) #6
  br label %38

24:                                               ; preds = %15
  %25 = landingpad { ptr, i32 }
          cleanup
  br label %37

26:                                               ; preds = %19
  %27 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #6
  br label %37

28:                                               ; preds = %17
  %29 = invoke noundef i64 @_ZNSt7__cxx115stollERKNS_12basic_stringIcSt11char_traitsIcESaIcEEEPmi(ptr noundef nonnull align 8 dereferenceable(32) %1, ptr noundef null, i32 noundef 10)
          to label %30 unwind label %35

30:                                               ; preds = %28
  %31 = invoke noundef zeroext i1 @_Z5flushx(i64 noundef %29)
          to label %32 unwind label %35

32:                                               ; preds = %30
  %.039. = select i1 %31, i32 %.03959, i32 %13
  %..029 = select i1 %31, i32 %13, i32 %.02960
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %1) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %1) #6
  %33 = sub nsw i32 %..029, %.039.
  %34 = icmp sgt i32 %33, 1
  br i1 %34, label %.lr.ph, label %._crit_edge, !llvm.loop !7

35:                                               ; preds = %30, %28
  %36 = landingpad { ptr, i32 }
          cleanup
  br label %37

37:                                               ; preds = %35, %26, %24
  %.pn42 = phi { ptr, i32 } [ %27, %26 ], [ %36, %35 ], [ %25, %24 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %1) #6
  br label %38

38:                                               ; preds = %37, %22
  %.pn42.pn = phi { ptr, i32 } [ %.pn42, %37 ], [ %23, %22 ]
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %1) #6
  br label %48

._crit_edge:                                      ; preds = %32
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %5) #6
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %6) #6
  call void @_ZNSt7__cxx119to_stringEx(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %6, i64 noundef %.02861)
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %7) #6
  call void @_ZNSt7__cxx119to_stringEi(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %7, i32 noundef %..029) #6
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_S9_(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %5, ptr noundef nonnull align 8 dereferenceable(32) %6, ptr noundef nonnull align 8 dereferenceable(32) %7)
          to label %39 unwind label %43

39:                                               ; preds = %._crit_edge
  %40 = invoke noundef i64 @_ZNSt7__cxx115stollERKNS_12basic_stringIcSt11char_traitsIcESaIcEEEPmi(ptr noundef nonnull align 8 dereferenceable(32) %5, ptr noundef null, i32 noundef 10)
          to label %41 unwind label %45

41:                                               ; preds = %39
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %7) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %6) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %5) #6
  %42 = icmp slt i64 %40, 1000000000
  br i1 %42, label %.lr.ph.preheader, label %.preheader, !llvm.loop !8

43:                                               ; preds = %._crit_edge
  %44 = landingpad { ptr, i32 }
          cleanup
  br label %47

45:                                               ; preds = %39
  %46 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #6
  br label %47

47:                                               ; preds = %45, %43
  %.pn = phi { ptr, i32 } [ %46, %45 ], [ %44, %43 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %7) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %6) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %5) #6
  br label %48

48:                                               ; preds = %47, %38
  %.pn42.pn.pn = phi { ptr, i32 } [ %.pn42.pn, %38 ], [ %.pn, %47 ]
  resume { ptr, i32 } %.pn42.pn.pn

.lr.ph68:                                         ; preds = %.preheader, %59
  %.167 = phi i64 [ %49, %59 ], [ %40, %.preheader ]
  %49 = sdiv i64 %.167, 10
  %50 = add nsw i64 %49, 1
  %51 = srem i64 %50, 10
  %52 = icmp eq i64 %51, 0
  br i1 %52, label %.lr.ph64, label %._crit_edge65

.lr.ph64:                                         ; preds = %.lr.ph68, %.lr.ph64
  %.02762 = phi i64 [ %53, %.lr.ph64 ], [ %50, %.lr.ph68 ]
  %53 = sdiv i64 %.02762, 10
  %54 = srem i64 %53, 10
  %55 = icmp eq i64 %54, 0
  br i1 %55, label %.lr.ph64, label %._crit_edge65, !llvm.loop !9

._crit_edge65:                                    ; preds = %.lr.ph64, %.lr.ph68
  %.027.lcssa = phi i64 [ %50, %.lr.ph68 ], [ %53, %.lr.ph64 ]
  %.not = icmp eq i64 %.027.lcssa, 1
  %56 = call noundef zeroext i1 @_Z5flushx(i64 noundef %50)
  br i1 %.not, label %58, label %57

57:                                               ; preds = %._crit_edge65
  br i1 %56, label %59, label %.thread

58:                                               ; preds = %._crit_edge65
  br i1 %56, label %.thread, label %59

59:                                               ; preds = %57, %58
  %60 = srem i64 %49, 10
  %61 = icmp eq i64 %60, 0
  br i1 %61, label %.lr.ph68, label %.thread

.thread:                                          ; preds = %59, %57, %58, %.preheader
  %.1.lcssa = phi i64 [ %40, %.preheader ], [ %.167, %58 ], [ %.167, %57 ], [ %49, %59 ]
  call void @_Z6answerx(i64 noundef %.1.lcssa)
  ret i32 0
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_S9_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #3

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZNSt7__cxx119to_stringEx(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, i64 noundef) local_unnamed_addr #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt7__cxx119to_stringEi(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, i32 noundef) local_unnamed_addr #4

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #5 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i64 @_ZNSt7__cxx115stollERKNS_12basic_stringIcSt11char_traitsIcESaIcEEEPmi(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, i32 noundef) local_unnamed_addr #3

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EERKS8_PKS5_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #5 align 2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { 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 #4 = { inlinehint 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 #5 = { 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 #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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}
!7 = distinct !{!7, !6}
!8 = distinct !{!8, !6}
!9 = distinct !{!9, !6}


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