; LLVM IR from abeaumont/competitive-programming :: cses (1092)

; 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" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca %"class.std::vector", align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #6
  %14 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %2)
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #6
  %15 = load i64, ptr %2, align 8, !tbaa !5
  %16 = load i64, ptr %2, align 8, !tbaa !5
  %17 = add nsw i64 %16, 1
  %18 = mul nsw i64 %15, %17
  %19 = sdiv i64 %18, 2
  store i64 %19, ptr %3, align 8, !tbaa !5
  %20 = load i64, ptr %3, align 8, !tbaa !5
  %21 = srem i64 %20, 2
  %22 = icmp ne i64 %21, 0
  br i1 %22, label %23, label %25

23:                                               ; preds = %0
  %24 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str)
  br label %152

25:                                               ; preds = %0
  %26 = load i64, ptr %3, align 8, !tbaa !5
  %27 = sdiv i64 %26, 2
  store i64 %27, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 24, ptr %4) #6
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #6
  store i64 0, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #6
  store i64 0, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #6
  %28 = load i64, ptr %2, align 8, !tbaa !5
  store i64 %28, ptr %7, align 8, !tbaa !5
  br label %29

29:                                               ; preds = %60, %25
  br label %30

30:                                               ; preds = %29
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #6
  %31 = load i64, ptr %7, align 8, !tbaa !5
  %32 = trunc i64 %31 to i32
  store i32 %32, ptr %8, align 4, !tbaa !9
  invoke void @_ZNSt6vectorIiSaIiEE9push_backEOi(ptr noundef nonnull align 8 dereferenceable(24) %4, ptr noundef nonnull align 4 dereferenceable(4) %8)
          to label %33 unwind label %44

33:                                               ; preds = %30
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #6
  %34 = load i64, ptr %7, align 8, !tbaa !5
  %35 = add nsw i64 %34, -1
  store i64 %35, ptr %7, align 8, !tbaa !5
  %36 = load i64, ptr %5, align 8, !tbaa !5
  %37 = add nsw i64 %36, %34
  store i64 %37, ptr %5, align 8, !tbaa !5
  %38 = load i64, ptr %3, align 8, !tbaa !5
  %39 = load i64, ptr %5, align 8, !tbaa !5
  %40 = sub nsw i64 %38, %39
  store i64 %40, ptr %6, align 8, !tbaa !5
  %41 = load i64, ptr %6, align 8, !tbaa !5
  %42 = icmp ne i64 %41, 0
  br i1 %42, label %48, label %43

43:                                               ; preds = %33
  br label %61

44:                                               ; preds = %30
  %45 = landingpad { ptr, i32 }
          cleanup
  %46 = extractvalue { ptr, i32 } %45, 0
  store ptr %46, ptr %9, align 8
  %47 = extractvalue { ptr, i32 } %45, 1
  store i32 %47, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #6
  br label %151

48:                                               ; preds = %33
  %49 = load i64, ptr %6, align 8, !tbaa !5
  %50 = load i64, ptr %7, align 8, !tbaa !5
  %51 = icmp sle i64 %49, %50
  br i1 %51, label %52, label %60

52:                                               ; preds = %48
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #6
  %53 = load i64, ptr %6, align 8, !tbaa !5
  %54 = trunc i64 %53 to i32
  store i32 %54, ptr %11, align 4, !tbaa !9
  invoke void @_ZNSt6vectorIiSaIiEE9push_backEOi(ptr noundef nonnull align 8 dereferenceable(24) %4, ptr noundef nonnull align 4 dereferenceable(4) %11)
          to label %55 unwind label %56

55:                                               ; preds = %52
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #6
  br label %61

56:                                               ; preds = %52
  %57 = landingpad { ptr, i32 }
          cleanup
  %58 = extractvalue { ptr, i32 } %57, 0
  store ptr %58, ptr %9, align 8
  %59 = extractvalue { ptr, i32 } %57, 1
  store i32 %59, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #6
  br label %151

60:                                               ; preds = %48
  br label %29, !llvm.loop !11

61:                                               ; preds = %55, %43
  %62 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.1)
          to label %63 unwind label %75

63:                                               ; preds = %61
  %64 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  %65 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEm(ptr noundef nonnull align 8 dereferenceable(8) %62, i64 noundef %64)
          to label %66 unwind label %75

66:                                               ; preds = %63
  %67 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %65, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %68 unwind label %75

68:                                               ; preds = %66
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #6
  store i32 0, ptr %12, align 4, !tbaa !9
  br label %69

69:                                               ; preds = %99, %68
  %70 = load i32, ptr %12, align 4, !tbaa !9
  %71 = sext i32 %70 to i64
  %72 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  %73 = icmp ult i64 %71, %72
  br i1 %73, label %79, label %74

74:                                               ; preds = %69
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #6
  br label %102

75:                                               ; preds = %148, %109, %104, %102, %66, %63, %61
  %76 = landingpad { ptr, i32 }
          cleanup
  %77 = extractvalue { ptr, i32 } %76, 0
  store ptr %77, ptr %9, align 8
  %78 = extractvalue { ptr, i32 } %76, 1
  store i32 %78, ptr %10, align 4
  br label %151

79:                                               ; preds = %69
  %80 = load i32, ptr %12, align 4, !tbaa !9
  %81 = sext i32 %80 to i64
  %82 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %81) #6
  %83 = load i32, ptr %82, align 4, !tbaa !9
  %84 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %83)
          to label %85 unwind label %94

85:                                               ; preds = %79
  %86 = load i32, ptr %12, align 4, !tbaa !9
  %87 = sext i32 %86 to i64
  %88 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  %89 = sub i64 %88, 1
  %90 = icmp ult i64 %87, %89
  br i1 %90, label %91, label %98

91:                                               ; preds = %85
  %92 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.2)
          to label %93 unwind label %94

93:                                               ; preds = %91
  br label %98

94:                                               ; preds = %91, %79
  %95 = landingpad { ptr, i32 }
          cleanup
  %96 = extractvalue { ptr, i32 } %95, 0
  store ptr %96, ptr %9, align 8
  %97 = extractvalue { ptr, i32 } %95, 1
  store i32 %97, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #6
  br label %151

98:                                               ; preds = %93, %85
  br label %99

99:                                               ; preds = %98
  %100 = load i32, ptr %12, align 4, !tbaa !9
  %101 = add nsw i32 %100, 1
  store i32 %101, ptr %12, align 4, !tbaa !9
  br label %69, !llvm.loop !13

102:                                              ; preds = %74
  %103 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %104 unwind label %75

104:                                              ; preds = %102
  %105 = load i64, ptr %2, align 8, !tbaa !5
  %106 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  %107 = sub i64 %105, %106
  %108 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEy(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %107)
          to label %109 unwind label %75

109:                                              ; preds = %104
  %110 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %108, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %111 unwind label %75

111:                                              ; preds = %109
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #6
  %112 = load i64, ptr %7, align 8, !tbaa !5
  store i64 %112, ptr %13, align 8, !tbaa !5
  br label %113

113:                                              ; preds = %145, %111
  %114 = load i64, ptr %13, align 8, !tbaa !5
  %115 = icmp sgt i64 %114, 0
  br i1 %115, label %117, label %116

116:                                              ; preds = %113
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #6
  br label %148

117:                                              ; preds = %113
  %118 = load i64, ptr %13, align 8, !tbaa !5
  %119 = load i64, ptr %6, align 8, !tbaa !5
  %120 = icmp eq i64 %118, %119
  br i1 %120, label %121, label %122

121:                                              ; preds = %117
  br label %145

122:                                              ; preds = %117
  %123 = load i64, ptr %13, align 8, !tbaa !5
  %124 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %123)
          to label %125 unwind label %140

125:                                              ; preds = %122
  %126 = load i64, ptr %6, align 8, !tbaa !5
  %127 = icmp ne i64 %126, 1
  br i1 %127, label %128, label %131

128:                                              ; preds = %125
  %129 = load i64, ptr %13, align 8, !tbaa !5
  %130 = icmp sgt i64 %129, 1
  br i1 %130, label %137, label %131

131:                                              ; preds = %128, %125
  %132 = load i64, ptr %6, align 8, !tbaa !5
  %133 = icmp eq i64 %132, 1
  br i1 %133, label %134, label %144

134:                                              ; preds = %131
  %135 = load i64, ptr %13, align 8, !tbaa !5
  %136 = icmp sgt i64 %135, 2
  br i1 %136, label %137, label %144

137:                                              ; preds = %134, %128
  %138 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.2)
          to label %139 unwind label %140

139:                                              ; preds = %137
  br label %144

140:                                              ; preds = %137, %122
  %141 = landingpad { ptr, i32 }
          cleanup
  %142 = extractvalue { ptr, i32 } %141, 0
  store ptr %142, ptr %9, align 8
  %143 = extractvalue { ptr, i32 } %141, 1
  store i32 %143, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #6
  br label %151

144:                                              ; preds = %139, %134, %131
  br label %145

145:                                              ; preds = %144, %121
  %146 = load i64, ptr %13, align 8, !tbaa !5
  %147 = add nsw i64 %146, -1
  store i64 %147, ptr %13, align 8, !tbaa !5
  br label %113, !llvm.loop !14

148:                                              ; preds = %116
  %149 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %150 unwind label %75

150:                                              ; preds = %148
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %4) #6
  br label %152

151:                                              ; preds = %140, %94, %75, %56, %44
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  br label %154

152:                                              ; preds = %150, %23
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  %153 = load i32, ptr %1, align 4
  ret i32 %153

154:                                              ; preds = %151
  %155 = load ptr, ptr %9, align 8
  %156 = load i32, ptr %10, align 4
  %157 = insertvalue { ptr, i32 } poison, ptr %155, 0
  %158 = insertvalue { ptr, i32 } %157, i32 %156, 1
  resume { ptr, i32 } %158
}

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

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backEOi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) #2 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 uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEm(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #4 align 2

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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #3

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #4 align 2

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

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #4 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 = { 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 #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 = { 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 = { "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}


; 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" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 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 i32, align 4
  %4 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #6
  %5 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %1)
  %6 = load i64, ptr %1, align 8, !tbaa !5
  %7 = add nsw i64 %6, 1
  %8 = mul nsw i64 %7, %6
  %9 = sdiv i64 %8, 2
  %10 = and i64 %9, 1
  %.not = icmp eq i64 %10, 0
  br i1 %.not, label %13, label %11

11:                                               ; preds = %0
  %12 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str)
  br label %83

13:                                               ; preds = %0
  %14 = sdiv i64 %8, 4
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %2) #6
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  %15 = load i64, ptr %1, align 8, !tbaa !5
  br label %16

16:                                               ; preds = %24, %13
  %.034 = phi i64 [ 0, %13 ], [ %20, %24 ]
  %.033 = phi i64 [ %15, %13 ], [ %19, %24 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #6
  %17 = trunc i64 %.033 to i32
  store i32 %17, ptr %3, align 4, !tbaa !9
  invoke void @_ZNSt6vectorIiSaIiEE9push_backEOi(ptr noundef nonnull align 8 dereferenceable(24) %2, ptr noundef nonnull align 4 dereferenceable(4) %3)
          to label %18 unwind label %22

18:                                               ; preds = %16
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #6
  %19 = add nsw i64 %.033, -1
  %20 = add nsw i64 %.033, %.034
  %21 = sub nsw i64 %14, %20
  %.fr53 = freeze i64 %21
  %.not38 = icmp eq i64 %14, %20
  br i1 %.not38, label %.loopexit, label %24

22:                                               ; preds = %16
  %23 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #6
  br label %.split.us

24:                                               ; preds = %18
  %.not39.not = icmp slt i64 %.fr53, %.033
  br i1 %.not39.not, label %25, label %16, !llvm.loop !11

25:                                               ; preds = %24
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #6
  %26 = trunc i64 %.fr53 to i32
  store i32 %26, ptr %4, align 4, !tbaa !9
  invoke void @_ZNSt6vectorIiSaIiEE9push_backEOi(ptr noundef nonnull align 8 dereferenceable(24) %2, ptr noundef nonnull align 4 dereferenceable(4) %4)
          to label %27 unwind label %28

27:                                               ; preds = %25
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #6
  br label %.loopexit

28:                                               ; preds = %25
  %29 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #6
  br label %.split.us

.loopexit:                                        ; preds = %18, %27
  %30 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.1)
          to label %31 unwind label %38

31:                                               ; preds = %.loopexit
  %32 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  %33 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEm(ptr noundef nonnull align 8 dereferenceable(8) %30, i64 noundef %32)
          to label %34 unwind label %38

34:                                               ; preds = %31
  %35 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %33, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %.preheader41 unwind label %38

.preheader41:                                     ; preds = %34
  %36 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  %.not52 = icmp eq i64 %36, 0
  br i1 %.not52, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %51, %.preheader41
  %37 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %54 unwind label %38

38:                                               ; preds = %._crit_edge49, %59, %54, %._crit_edge, %34, %31, %.loopexit
  %39 = landingpad { ptr, i32 }
          cleanup
  br label %.split.us

.lr.ph:                                           ; preds = %.preheader41, %51
  %indvars.iv = phi i64 [ %indvars.iv.next, %51 ], [ 0, %.preheader41 ]
  %40 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv) #6
  %41 = load i32, ptr %40, align 4, !tbaa !9
  %42 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %41)
          to label %43 unwind label %49

43:                                               ; preds = %.lr.ph
  %44 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  %45 = add i64 %44, -1
  %46 = icmp ugt i64 %45, %indvars.iv
  br i1 %46, label %47, label %51

47:                                               ; preds = %43
  %48 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.2)
          to label %51 unwind label %49

49:                                               ; preds = %47, %.lr.ph
  %50 = landingpad { ptr, i32 }
          cleanup
  br label %.split.us

51:                                               ; preds = %43, %47
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %52 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  %53 = icmp ugt i64 %52, %indvars.iv.next
  br i1 %53, label %.lr.ph, label %._crit_edge, !llvm.loop !13

54:                                               ; preds = %._crit_edge
  %55 = load i64, ptr %1, align 8, !tbaa !5
  %56 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  %57 = sub i64 %55, %56
  %58 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEy(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %57)
          to label %59 unwind label %38

59:                                               ; preds = %54
  %60 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %58, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %.preheader unwind label %38

.preheader:                                       ; preds = %59
  %61 = icmp sgt i64 %.033, 1
  br i1 %61, label %.lr.ph48, label %._crit_edge49

.lr.ph48:                                         ; preds = %.preheader
  %.not54 = icmp eq i64 %.fr53, 1
  br i1 %.not54, label %.lr.ph48.split.us.split.preheader, label %.lr.ph48.split

.lr.ph48.split.us.split.preheader:                ; preds = %.lr.ph48
  %62 = icmp eq i64 %19, 1
  br i1 %62, label %._crit_edge49, label %.lr.ph81

.lr.ph81:                                         ; preds = %.lr.ph48.split.us.split.preheader, %.lr.ph48.split.us.split
  %.046.us80 = phi i64 [ %68, %.lr.ph48.split.us.split ], [ %19, %.lr.ph48.split.us.split.preheader ]
  %63 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %.046.us80)
          to label %64 unwind label %.split.us.split

64:                                               ; preds = %.lr.ph81
  %65 = icmp ugt i64 %.046.us80, 2
  br i1 %65, label %66, label %.lr.ph48.split.us.split

66:                                               ; preds = %64
  %67 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.2)
          to label %.lr.ph48.split.us.split unwind label %.split.us.split

.lr.ph48.split.us.split:                          ; preds = %66, %64
  %68 = add nsw i64 %.046.us80, -1
  %69 = icmp eq i64 %68, 1
  br i1 %69, label %._crit_edge49, label %.lr.ph81, !llvm.loop !14

.split.us.split:                                  ; preds = %66, %.lr.ph81
  %70 = landingpad { ptr, i32 }
          cleanup
  br label %.split.us

._crit_edge49:                                    ; preds = %75, %79, %.lr.ph48.split.us.split, %.lr.ph48.split.us.split.preheader, %.preheader
  %71 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %82 unwind label %38

.lr.ph48.split:                                   ; preds = %.lr.ph48, %79
  %.046 = phi i64 [ %80, %79 ], [ %19, %.lr.ph48 ]
  %72 = icmp eq i64 %.046, %.fr53
  br i1 %72, label %79, label %73

73:                                               ; preds = %.lr.ph48.split
  %74 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %.046)
          to label %75 unwind label %.split

75:                                               ; preds = %73
  %.not55 = icmp eq i64 %.046, 1
  br i1 %.not55, label %._crit_edge49, label %76

76:                                               ; preds = %75
  %77 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.2)
          to label %79 unwind label %.split

.split:                                           ; preds = %76, %73
  %78 = landingpad { ptr, i32 }
          cleanup
  br label %.split.us

79:                                               ; preds = %76, %.lr.ph48.split
  %80 = add nsw i64 %.046, -1
  %81 = icmp sgt i64 %.046, 1
  br i1 %81, label %.lr.ph48.split, label %._crit_edge49, !llvm.loop !14

82:                                               ; preds = %._crit_edge49
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #6
  br label %83

.split.us:                                        ; preds = %.split, %.split.us.split, %49, %38, %28, %22
  %.pn = phi { ptr, i32 } [ %50, %49 ], [ %39, %38 ], [ %29, %28 ], [ %23, %22 ], [ %78, %.split ], [ %70, %.split.us.split ]
  call void @_ZNSt6vectorIiSaIiEED2Ev(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
  resume { ptr, i32 } %.pn

83:                                               ; preds = %82, %11
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #6
  ret i32 0
}

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

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backEOi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2 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 uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEm(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #4 align 2

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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #3

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #4 align 2

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

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #4 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 = { 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 #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 = { 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 = { "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}


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