; LLVM IR from brpapa/algorithms :: solutions/codeforces (459-B)

; 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 }
%"class.std::allocator" = type { i8 }
%"class.__gnu_cxx::__normal_iterator" = type { 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 [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 i32, align 4
  %3 = alloca %"class.std::vector", align 8
  %4 = alloca %"class.std::allocator", align 1
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %9 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %10 = alloca ptr, align 8
  %11 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %12 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %13 = alloca i32, align 4
  %14 = alloca i64, align 8
  %15 = alloca i32, align 4
  %16 = alloca i64, align 8
  %17 = alloca i32, align 4
  %18 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #7
  %19 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
  call void @llvm.lifetime.start.p0(i64 24, ptr %3) #7
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr %4) #7
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #7
  invoke void @_ZNSt6vectorIiSaIiEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %21, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %22 unwind label %32

22:                                               ; preds = %0
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #7
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #7
  store ptr %3, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #7
  %23 = load ptr, ptr %7, align 8, !tbaa !9
  %24 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %23) #7
  %25 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %8, i32 0, i32 0
  store ptr %24, ptr %25, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #7
  %26 = load ptr, ptr %7, align 8, !tbaa !9
  %27 = call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %26) #7
  %28 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %9, i32 0, i32 0
  store ptr %27, ptr %28, align 8
  br label %29

29:                                               ; preds = %41, %22
  %30 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8) %8, ptr noundef nonnull align 8 dereferenceable(8) %9) #7
  br i1 %30, label %36, label %31

31:                                               ; preds = %29
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #7
  br label %47

32:                                               ; preds = %0
  %33 = landingpad { ptr, i32 }
          cleanup
  %34 = extractvalue { ptr, i32 } %33, 0
  store ptr %34, ptr %5, align 8
  %35 = extractvalue { ptr, i32 } %33, 1
  store i32 %35, ptr %6, align 4
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #7
  br label %140

36:                                               ; preds = %29
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #7
  %37 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %8) #7
  store ptr %37, ptr %10, align 8, !tbaa !9
  %38 = load ptr, ptr %10, align 8, !tbaa !9
  %39 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %38)
          to label %40 unwind label %43

40:                                               ; preds = %36
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #7
  br label %41

41:                                               ; preds = %40
  %42 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %8) #7
  br label %29

43:                                               ; preds = %36
  %44 = landingpad { ptr, i32 }
          cleanup
  %45 = extractvalue { ptr, i32 } %44, 0
  store ptr %45, ptr %5, align 8
  %46 = extractvalue { ptr, i32 } %44, 1
  store i32 %46, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #7
  br label %139

47:                                               ; preds = %31
  %48 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  %49 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %11, i32 0, i32 0
  store ptr %48, ptr %49, align 8
  %50 = call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  %51 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %12, i32 0, i32 0
  store ptr %50, ptr %51, align 8
  %52 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %11, i32 0, i32 0
  %53 = load ptr, ptr %52, align 8
  %54 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %12, i32 0, i32 0
  %55 = load ptr, ptr %54, align 8
  invoke void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEEvT_S7_(ptr %53, ptr %55)
          to label %56 unwind label %75

56:                                               ; preds = %47
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #7
  %57 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEE5frontEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  %58 = load i32, ptr %57, align 4, !tbaa !5
  store i32 %58, ptr %13, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %14) #7
  store i64 0, ptr %14, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #7
  %59 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEE4backEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  %60 = load i32, ptr %59, align 4, !tbaa !5
  store i32 %60, ptr %15, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %16) #7
  store i64 0, ptr %16, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %17) #7
  store i32 0, ptr %17, align 4, !tbaa !5
  br label %61

61:                                               ; preds = %82, %56
  %62 = load i32, ptr %17, align 4, !tbaa !5
  %63 = load i32, ptr %2, align 4, !tbaa !5
  %64 = icmp slt i32 %62, %63
  br i1 %64, label %65, label %72

65:                                               ; preds = %61
  %66 = load i32, ptr %17, align 4, !tbaa !5
  %67 = sext i32 %66 to i64
  %68 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %67) #7
  %69 = load i32, ptr %68, align 4, !tbaa !5
  %70 = load i32, ptr %13, align 4, !tbaa !5
  %71 = icmp eq i32 %69, %70
  br label %72

72:                                               ; preds = %65, %61
  %73 = phi i1 [ false, %61 ], [ %71, %65 ]
  br i1 %73, label %79, label %74

74:                                               ; preds = %72
  call void @llvm.lifetime.end.p0(i64 4, ptr %17) #7
  br label %85

75:                                               ; preds = %47
  %76 = landingpad { ptr, i32 }
          cleanup
  %77 = extractvalue { ptr, i32 } %76, 0
  store ptr %77, ptr %5, align 8
  %78 = extractvalue { ptr, i32 } %76, 1
  store i32 %78, ptr %6, align 4
  br label %139

79:                                               ; preds = %72
  %80 = load i64, ptr %14, align 8, !tbaa !11
  %81 = add nsw i64 %80, 1
  store i64 %81, ptr %14, align 8, !tbaa !11
  br label %82

82:                                               ; preds = %79
  %83 = load i32, ptr %17, align 4, !tbaa !5
  %84 = add nsw i32 %83, 1
  store i32 %84, ptr %17, align 4, !tbaa !5
  br label %61, !llvm.loop !13

85:                                               ; preds = %74
  call void @llvm.lifetime.start.p0(i64 4, ptr %18) #7
  %86 = load i32, ptr %2, align 4, !tbaa !5
  %87 = sub nsw i32 %86, 1
  store i32 %87, ptr %18, align 4, !tbaa !5
  br label %88

88:                                               ; preds = %104, %85
  %89 = load i32, ptr %18, align 4, !tbaa !5
  %90 = icmp sge i32 %89, 0
  br i1 %90, label %91, label %98

91:                                               ; preds = %88
  %92 = load i32, ptr %18, align 4, !tbaa !5
  %93 = sext i32 %92 to i64
  %94 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %93) #7
  %95 = load i32, ptr %94, align 4, !tbaa !5
  %96 = load i32, ptr %15, align 4, !tbaa !5
  %97 = icmp eq i32 %95, %96
  br label %98

98:                                               ; preds = %91, %88
  %99 = phi i1 [ false, %88 ], [ %97, %91 ]
  br i1 %99, label %101, label %100

100:                                              ; preds = %98
  call void @llvm.lifetime.end.p0(i64 4, ptr %18) #7
  br label %107

101:                                              ; preds = %98
  %102 = load i64, ptr %16, align 8, !tbaa !11
  %103 = add nsw i64 %102, 1
  store i64 %103, ptr %16, align 8, !tbaa !11
  br label %104

104:                                              ; preds = %101
  %105 = load i32, ptr %18, align 4, !tbaa !5
  %106 = add nsw i32 %105, -1
  store i32 %106, ptr %18, align 4, !tbaa !5
  br label %88, !llvm.loop !15

107:                                              ; preds = %100
  %108 = load i32, ptr %15, align 4, !tbaa !5
  %109 = load i32, ptr %13, align 4, !tbaa !5
  %110 = sub nsw i32 %108, %109
  %111 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %110)
          to label %112 unwind label %135

112:                                              ; preds = %107
  %113 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %111, ptr noundef @.str)
          to label %114 unwind label %135

114:                                              ; preds = %112
  %115 = load i32, ptr %13, align 4, !tbaa !5
  %116 = load i32, ptr %15, align 4, !tbaa !5
  %117 = icmp slt i32 %115, %116
  br i1 %117, label %118, label %122

118:                                              ; preds = %114
  %119 = load i64, ptr %14, align 8, !tbaa !11
  %120 = load i64, ptr %16, align 8, !tbaa !11
  %121 = mul nsw i64 %119, %120
  br label %128

122:                                              ; preds = %114
  %123 = load i64, ptr %14, align 8, !tbaa !11
  %124 = load i64, ptr %14, align 8, !tbaa !11
  %125 = sub nsw i64 %124, 1
  %126 = mul nsw i64 %123, %125
  %127 = sdiv i64 %126, 2
  br label %128

128:                                              ; preds = %122, %118
  %129 = phi i64 [ %121, %118 ], [ %127, %122 ]
  %130 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) %113, i64 noundef %129)
          to label %131 unwind label %135

131:                                              ; preds = %128
  %132 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %130, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %133 unwind label %135

133:                                              ; preds = %131
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %14) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #7
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  %134 = load i32, ptr %1, align 4
  ret i32 %134

135:                                              ; preds = %131, %128, %112, %107
  %136 = landingpad { ptr, i32 }
          cleanup
  %137 = extractvalue { ptr, i32 } %136, 0
  store ptr %137, ptr %5, align 8
  %138 = extractvalue { ptr, i32 } %136, 1
  store i32 %138, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %14) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #7
  br label %139

139:                                              ; preds = %135, %75, %43
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  br label %140

140:                                              ; preds = %139, %32
  call void @llvm.lifetime.end.p0(i64 24, ptr %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  br label %141

141:                                              ; preds = %140
  %142 = load ptr, ptr %5, align 8
  %143 = load i32, ptr %6, align 4
  %144 = insertvalue { ptr, i32 } poison, ptr %142, 0
  %145 = insertvalue { ptr, i32 } %144, i32 %143, 1
  resume { ptr, i32 } %145
}

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #4 align 2

declare i32 @__gxx_personality_v0(...)

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEEvT_S7_(ptr, ptr) #6

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEE5frontEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEE4backEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; 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) #3 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) #6

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #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) #4 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)) #6

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

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


; 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 }
%"class.std::allocator" = type { i8 }
%"class.__gnu_cxx::__normal_iterator" = type { 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 [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 i32, align 4
  %2 = alloca %"class.std::vector", align 8
  %3 = alloca %"class.std::allocator", align 1
  %4 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %5 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #7
  %6 = 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
  %7 = load i32, ptr %1, align 4, !tbaa !5
  %8 = sext i32 %7 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %3) #7
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3) #7
  invoke void @_ZNSt6vectorIiSaIiEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %8, ptr noundef nonnull align 1 dereferenceable(1) %3)
          to label %9 unwind label %15

9:                                                ; preds = %0
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %3) #7
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #7
  %10 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #7
  store ptr %10, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #7
  %11 = call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #7
  store ptr %11, ptr %5, align 8
  %12 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %5) #7
  br i1 %12, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %19, %9
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #7
  %13 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #7
  %14 = call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #7
  invoke void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEEvT_S7_(ptr %13, ptr %14)
          to label %24 unwind label %37

15:                                               ; preds = %0
  %16 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %3) #7
  br label %69

.lr.ph:                                           ; preds = %9, %19
  %17 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %4) #7
  %18 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %17)
          to label %19 unwind label %22

19:                                               ; preds = %.lr.ph
  %20 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %4) #7
  %21 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %5) #7
  br i1 %21, label %.lr.ph, label %._crit_edge

22:                                               ; preds = %.lr.ph
  %23 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #7
  br label %68

24:                                               ; preds = %._crit_edge
  %25 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEE5frontEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #7
  %26 = load i32, ptr %25, align 4, !tbaa !5
  %27 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEE4backEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #7
  %28 = load i32, ptr %27, align 4, !tbaa !5
  %29 = load i32, ptr %1, align 4, !tbaa !5
  %30 = icmp sgt i32 %29, 0
  br i1 %30, label %.lr.ph37, label %.critedge2

.lr.ph37:                                         ; preds = %24, %39
  %.02834 = phi i64 [ %40, %39 ], [ 0, %24 ]
  %31 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %.02834) #7
  %32 = load i32, ptr %31, align 4, !tbaa !5
  %33 = icmp eq i32 %32, %26
  %.pre.pre = load i32, ptr %1, align 4, !tbaa !5
  br i1 %33, label %39, label %.critedge

.critedge:                                        ; preds = %.lr.ph37, %39
  %.028.lcssa = phi i64 [ %.02834, %.lr.ph37 ], [ %40, %39 ]
  %34 = icmp sgt i32 %.pre.pre, 0
  br i1 %34, label %.lr.ph43.preheader, label %.critedge2

.lr.ph43.preheader:                               ; preds = %.critedge
  %35 = zext nneg i32 %.pre.pre to i64
  %36 = zext nneg i32 %.pre.pre to i64
  br label %.lr.ph43

37:                                               ; preds = %._crit_edge
  %38 = landingpad { ptr, i32 }
          cleanup
  br label %68

39:                                               ; preds = %.lr.ph37
  %40 = add nuw nsw i64 %.02834, 1
  %41 = sext i32 %.pre.pre to i64
  %42 = icmp slt i64 %40, %41
  br i1 %42, label %.lr.ph37, label %.critedge, !llvm.loop !9

.lr.ph43:                                         ; preds = %.lr.ph43.preheader, %48
  %indvars.iv = phi i64 [ %35, %.lr.ph43.preheader ], [ %indvars.iv.next, %48 ]
  %.02741 = phi i64 [ 0, %.lr.ph43.preheader ], [ %49, %48 ]
  %indvars.iv.next = add nsw i64 %indvars.iv, -1
  %43 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv.next) #7
  %44 = load i32, ptr %43, align 4, !tbaa !5
  %45 = icmp eq i32 %44, %28
  br i1 %45, label %48, label %.critedge2

.critedge2:                                       ; preds = %.lr.ph43, %48, %24, %.critedge
  %.028.lcssa50 = phi i64 [ %.028.lcssa, %.critedge ], [ 0, %24 ], [ %.028.lcssa, %48 ], [ %.028.lcssa, %.lr.ph43 ]
  %.027.lcssa = phi i64 [ 0, %.critedge ], [ 0, %24 ], [ %.02741, %.lr.ph43 ], [ %36, %48 ]
  %46 = sub nsw i32 %28, %26
  %47 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %46)
          to label %50 unwind label %66

48:                                               ; preds = %.lr.ph43
  %49 = add nuw nsw i64 %.02741, 1
  %exitcond.not = icmp eq i64 %49, %35
  br i1 %exitcond.not, label %.critedge2, label %.lr.ph43, !llvm.loop !11

50:                                               ; preds = %.critedge2
  %51 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %47, ptr noundef nonnull @.str)
          to label %52 unwind label %66

52:                                               ; preds = %50
  %53 = icmp slt i32 %26, %28
  br i1 %53, label %54, label %56

54:                                               ; preds = %52
  %55 = mul nuw nsw i64 %.027.lcssa, %.028.lcssa50
  br label %60

56:                                               ; preds = %52
  %57 = add nsw i64 %.028.lcssa50, -1
  %58 = mul nsw i64 %57, %.028.lcssa50
  %59 = sdiv i64 %58, 2
  br label %60

60:                                               ; preds = %56, %54
  %61 = phi i64 [ %55, %54 ], [ %59, %56 ]
  %62 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) %51, i64 noundef %61)
          to label %63 unwind label %66

63:                                               ; preds = %60
  %64 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %62, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %65 unwind label %66

65:                                               ; preds = %63
  call void @_ZNSt6vectorIiSaIiEED2Ev(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
  ret i32 0

66:                                               ; preds = %63, %60, %50, %.critedge2
  %67 = landingpad { ptr, i32 }
          cleanup
  br label %68

68:                                               ; preds = %66, %37, %22
  %.pn = phi { ptr, i32 } [ %23, %22 ], [ %67, %66 ], [ %38, %37 ]
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #7
  br label %69

69:                                               ; preds = %68, %15
  %.pn.pn = phi { ptr, i32 } [ %.pn, %68 ], [ %16, %15 ]
  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
}

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

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 #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #4 align 2

declare i32 @__gxx_personality_v0(...)

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEEvT_S7_(ptr, ptr) local_unnamed_addr #6

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEE5frontEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEE4backEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; 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 #3 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 #6

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #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 #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 #4 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)) #6

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

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


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