; LLVM IR from ShahjalalShohag/code-library :: Graph Theory/Euler Path Undirected.ll (Z5solvei)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = 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.2" = type { i8 }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"struct.std::pair" = type { i32, i32 }
%"class.__gnu_cxx::__normal_iterator.5" = type { ptr }

@g = external dso_local global [420 x %"class.std::vector"], align 16
@ans = external dso_local global %"class.std::vector.0", align 8
@done = external dso_local global [420 x i32], align 16
@vis = external dso_local global [176400 x i32], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3dfsi(i32 noundef) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z5solvei(i32 noundef %0) #1 personality ptr @__gxx_personality_v0 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca %"class.std::vector.0", align 8
  %6 = alloca i32, align 4
  %7 = alloca %"class.std::allocator.2", align 1
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca ptr, align 8
  %13 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %14 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %15 = alloca %"struct.std::pair", align 4
  %16 = alloca i32, align 4
  %17 = alloca i32, align 4
  %18 = alloca i32, align 4
  %19 = alloca i32, align 4
  %20 = alloca %"class.__gnu_cxx::__normal_iterator.5", align 8
  %21 = alloca %"class.__gnu_cxx::__normal_iterator.5", align 8
  store i32 %0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #7
  store i32 0, ptr %4, align 4, !tbaa !5
  call void @_ZNSt6vectorIiSaIiEE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) @ans) #7
  call void @llvm.memset.p0.i64(ptr align 16 @done, i8 0, i64 1680, i1 false)
  call void @llvm.memset.p0.i64(ptr align 16 @vis, i8 0, i64 705600, i1 false)
  call void @llvm.lifetime.start.p0(i64 24, ptr %5) #7
  %22 = load i32, ptr %3, align 4, !tbaa !5
  %23 = add nsw i32 %22, 1
  %24 = sext i32 %23 to i64
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #7
  store i32 0, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %7) #7
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #7
  invoke void @_ZNSt6vectorIiSaIiEEC2EmRKiRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %24, ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 1 dereferenceable(1) %7)
          to label %25 unwind label %31

25:                                               ; preds = %1
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #7
  store i32 1, ptr %10, align 4, !tbaa !5
  br label %26

26:                                               ; preds = %66, %25
  %27 = load i32, ptr %10, align 4, !tbaa !5
  %28 = load i32, ptr %3, align 4, !tbaa !5
  %29 = icmp sle i32 %27, %28
  br i1 %29, label %35, label %30

30:                                               ; preds = %26
  store i32 2, ptr %11, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #7
  br label %69

31:                                               ; preds = %1
  %32 = landingpad { ptr, i32 }
          cleanup
  %33 = extractvalue { ptr, i32 } %32, 0
  store ptr %33, ptr %8, align 8
  %34 = extractvalue { ptr, i32 } %32, 1
  store i32 %34, ptr %9, align 4
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #7
  br label %146

35:                                               ; preds = %26
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #7
  %36 = load i32, ptr %10, align 4, !tbaa !5
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds [420 x %"class.std::vector"], ptr @g, i64 0, i64 %37
  store ptr %38, ptr %12, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #7
  %39 = load ptr, ptr %12, align 8, !tbaa !9
  %40 = call ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %39) #7
  %41 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %13, i32 0, i32 0
  store ptr %40, ptr %41, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %14) #7
  %42 = load ptr, ptr %12, align 8, !tbaa !9
  %43 = call ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %42) #7
  %44 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %14, i32 0, i32 0
  store ptr %43, ptr %44, align 8
  br label %45

45:                                               ; preds = %63, %35
  %46 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt4pairIiiESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %13, ptr noundef nonnull align 8 dereferenceable(8) %14) #7
  br i1 %46, label %48, label %47

47:                                               ; preds = %45
  store i32 5, ptr %11, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %14) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #7
  br label %65

48:                                               ; preds = %45
  call void @llvm.lifetime.start.p0(i64 8, ptr %15) #7
  %49 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %13) #7
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %15, ptr align 4 %49, i64 8, i1 false)
  %50 = getelementptr inbounds %"struct.std::pair", ptr %15, i32 0, i32 0
  %51 = load i32, ptr %50, align 4, !tbaa !11
  %52 = sext i32 %51 to i64
  %53 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %52) #7
  %54 = load i32, ptr %53, align 4, !tbaa !5
  %55 = add nsw i32 %54, 1
  store i32 %55, ptr %53, align 4, !tbaa !5
  %56 = load i32, ptr %10, align 4, !tbaa !5
  %57 = sext i32 %56 to i64
  %58 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %57) #7
  %59 = load i32, ptr %58, align 4, !tbaa !5
  %60 = add nsw i32 %59, 1
  store i32 %60, ptr %58, align 4, !tbaa !5
  %61 = load i32, ptr %4, align 4, !tbaa !5
  %62 = add nsw i32 %61, 1
  store i32 %62, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %15) #7
  br label %63

63:                                               ; preds = %48
  %64 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %13) #7
  br label %45

65:                                               ; preds = %47
  br label %66

66:                                               ; preds = %65
  %67 = load i32, ptr %10, align 4, !tbaa !5
  %68 = add nsw i32 %67, 1
  store i32 %68, ptr %10, align 4, !tbaa !5
  br label %26, !llvm.loop !13

69:                                               ; preds = %30
  call void @llvm.lifetime.start.p0(i64 4, ptr %16) #7
  store i32 0, ptr %16, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %17) #7
  store i32 0, ptr %17, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %18) #7
  store i32 1, ptr %18, align 4, !tbaa !5
  br label %70

70:                                               ; preds = %87, %69
  %71 = load i32, ptr %18, align 4, !tbaa !5
  %72 = load i32, ptr %3, align 4, !tbaa !5
  %73 = icmp sle i32 %71, %72
  br i1 %73, label %75, label %74

74:                                               ; preds = %70
  store i32 7, ptr %11, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %18) #7
  br label %90

75:                                               ; preds = %70
  %76 = load i32, ptr %18, align 4, !tbaa !5
  %77 = sext i32 %76 to i64
  %78 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %77) #7
  %79 = load i32, ptr %78, align 4, !tbaa !5
  %80 = and i32 %79, 1
  %81 = icmp ne i32 %80, 0
  br i1 %81, label %82, label %86

82:                                               ; preds = %75
  %83 = load i32, ptr %16, align 4, !tbaa !5
  %84 = add nsw i32 %83, 1
  store i32 %84, ptr %16, align 4, !tbaa !5
  %85 = load i32, ptr %18, align 4, !tbaa !5
  store i32 %85, ptr %17, align 4, !tbaa !5
  br label %86

86:                                               ; preds = %82, %75
  br label %87

87:                                               ; preds = %86
  %88 = load i32, ptr %18, align 4, !tbaa !5
  %89 = add nsw i32 %88, 1
  store i32 %89, ptr %18, align 4, !tbaa !5
  br label %70, !llvm.loop !15

90:                                               ; preds = %74
  %91 = load i32, ptr %16, align 4, !tbaa !5
  %92 = icmp sgt i32 %91, 2
  br i1 %92, label %93, label %94

93:                                               ; preds = %90
  store i32 0, ptr %2, align 4
  store i32 1, ptr %11, align 4
  br label %144

94:                                               ; preds = %90
  %95 = load i32, ptr %17, align 4, !tbaa !5
  %96 = icmp eq i32 %95, 0
  br i1 %96, label %97, label %116

97:                                               ; preds = %94
  call void @llvm.lifetime.start.p0(i64 4, ptr %19) #7
  store i32 1, ptr %19, align 4, !tbaa !5
  br label %98

98:                                               ; preds = %112, %97
  %99 = load i32, ptr %19, align 4, !tbaa !5
  %100 = load i32, ptr %3, align 4, !tbaa !5
  %101 = icmp sle i32 %99, %100
  br i1 %101, label %103, label %102

102:                                              ; preds = %98
  store i32 10, ptr %11, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %19) #7
  br label %115

103:                                              ; preds = %98
  %104 = load i32, ptr %19, align 4, !tbaa !5
  %105 = sext i32 %104 to i64
  %106 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %105) #7
  %107 = load i32, ptr %106, align 4, !tbaa !5
  %108 = icmp ne i32 %107, 0
  br i1 %108, label %109, label %111

109:                                              ; preds = %103
  %110 = load i32, ptr %19, align 4, !tbaa !5
  store i32 %110, ptr %17, align 4, !tbaa !5
  br label %111

111:                                              ; preds = %109, %103
  br label %112

112:                                              ; preds = %111
  %113 = load i32, ptr %19, align 4, !tbaa !5
  %114 = add nsw i32 %113, 1
  store i32 %114, ptr %19, align 4, !tbaa !5
  br label %98, !llvm.loop !16

115:                                              ; preds = %102
  br label %116

116:                                              ; preds = %115, %94
  %117 = load i32, ptr %17, align 4, !tbaa !5
  %118 = icmp eq i32 %117, 0
  br i1 %118, label %119, label %120

119:                                              ; preds = %116
  store i32 1, ptr %2, align 4
  store i32 1, ptr %11, align 4
  br label %144

120:                                              ; preds = %116
  %121 = load i32, ptr %17, align 4, !tbaa !5
  invoke void @_Z3dfsi(i32 noundef %121)
          to label %122 unwind label %130

122:                                              ; preds = %120
  %123 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) @ans) #7
  %124 = load i32, ptr %4, align 4, !tbaa !5
  %125 = sdiv i32 %124, 2
  %126 = add nsw i32 %125, 1
  %127 = sext i32 %126 to i64
  %128 = icmp ne i64 %123, %127
  br i1 %128, label %129, label %134

129:                                              ; preds = %122
  store i32 0, ptr %2, align 4
  store i32 1, ptr %11, align 4
  br label %144

130:                                              ; preds = %134, %120
  %131 = landingpad { ptr, i32 }
          cleanup
  %132 = extractvalue { ptr, i32 } %131, 0
  store ptr %132, ptr %8, align 8
  %133 = extractvalue { ptr, i32 } %131, 1
  store i32 %133, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %17) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #7
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #7
  br label %146

134:                                              ; preds = %122
  %135 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) @ans) #7
  %136 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.5", ptr %20, i32 0, i32 0
  store ptr %135, ptr %136, align 8
  %137 = call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) @ans) #7
  %138 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.5", ptr %21, i32 0, i32 0
  store ptr %137, ptr %138, align 8
  %139 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.5", ptr %20, i32 0, i32 0
  %140 = load ptr, ptr %139, align 8
  %141 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.5", ptr %21, i32 0, i32 0
  %142 = load ptr, ptr %141, align 8
  invoke void @_ZSt7reverseIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEEvT_S7_(ptr %140, ptr %142)
          to label %143 unwind label %130

143:                                              ; preds = %134
  store i32 1, ptr %2, align 4
  store i32 1, ptr %11, align 4
  br label %144

144:                                              ; preds = %143, %129, %119, %93
  call void @llvm.lifetime.end.p0(i64 4, ptr %17) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #7
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr %5) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #7
  %145 = load i32, ptr %2, align 4
  ret i32 %145

146:                                              ; preds = %130, %31
  call void @llvm.lifetime.end.p0(i64 24, ptr %5) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #7
  br label %147

147:                                              ; preds = %146
  %148 = load ptr, ptr %8, align 8
  %149 = load i32, ptr %9, align 4
  %150 = insertvalue { ptr, i32 } poison, ptr %148, 0
  %151 = insertvalue { ptr, i32 } %150, i32 %149, 1
  resume { ptr, i32 } %151
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2EmRKiRKS0_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPSt4pairIiiESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(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(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #0 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) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt7reverseIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEEvT_S7_(ptr, ptr) #6

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

attributes #0 = { 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 #1 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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, !6, i64 0}
!12 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}
!16 = distinct !{!16, !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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = 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.2" = type { i8 }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

@g = external dso_local global [420 x %"class.std::vector"], align 16
@ans = external dso_local global %"class.std::vector.0", align 8
@done = external dso_local local_unnamed_addr global [420 x i32], align 16
@vis = external dso_local local_unnamed_addr global [176400 x i32], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3dfsi(i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress uwtable
define dso_local noundef range(i32 0, 2) i32 @_Z5solvei(i32 noundef %0) local_unnamed_addr #1 personality ptr @__gxx_personality_v0 {
  %2 = alloca %"class.std::vector.0", align 8
  %3 = alloca i32, align 4
  %4 = alloca %"class.std::allocator.2", align 1
  %5 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %6 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  tail call void @_ZNSt6vectorIiSaIiEE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) @ans) #6
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(1680) @done, i8 0, i64 1680, i1 false)
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(705600) @vis, i8 0, i64 705600, i1 false)
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %2) #6
  %7 = add i32 %0, 1
  %8 = sext i32 %7 to i64
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #6
  store i32 0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %4) #6
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #6
  invoke void @_ZNSt6vectorIiSaIiEEC2EmRKiRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %8, ptr noundef nonnull align 4 dereferenceable(4) %3, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %9 unwind label %13

9:                                                ; preds = %1
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #6
  %.not52 = icmp slt i32 %0, 1
  br i1 %.not52, label %._crit_edge70.thread, label %.lr.ph56.preheader

.lr.ph56.preheader:                               ; preds = %9
  %wide.trip.count = zext i32 %7 to i64
  br label %.lr.ph56

.preheader50:                                     ; preds = %._crit_edge
  %10 = sdiv i32 %.1.lcssa, 2
  %11 = add nsw i32 %10, 1
  %12 = sext i32 %11 to i64
  br i1 %.not52, label %._crit_edge70.thread, label %.lr.ph62.preheader

.lr.ph62.preheader:                               ; preds = %.preheader50
  %wide.trip.count76 = zext i32 %7 to i64
  br label %.lr.ph62

13:                                               ; preds = %1
  %14 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #6
  br label %48

.lr.ph56:                                         ; preds = %.lr.ph56.preheader, %._crit_edge
  %indvars.iv = phi i64 [ 1, %.lr.ph56.preheader ], [ %indvars.iv.next, %._crit_edge ]
  %.02954 = phi i32 [ 0, %.lr.ph56.preheader ], [ %.1.lcssa, %._crit_edge ]
  %15 = getelementptr inbounds [420 x %"class.std::vector"], ptr @g, i64 0, i64 %indvars.iv
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #6
  %16 = call ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %15) #6
  store ptr %16, ptr %5, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #6
  %17 = call ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %15) #6
  store ptr %17, ptr %6, align 8
  %18 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt4pairIiiESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 8 dereferenceable(8) %6) #6
  br i1 %18, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.lr.ph56
  %.1.lcssa = phi i32 [ %.02954, %.lr.ph56 ], [ %27, %.lr.ph ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #6
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %.preheader50, label %.lr.ph56, !llvm.loop !9

.lr.ph:                                           ; preds = %.lr.ph56, %.lr.ph
  %.151 = phi i32 [ %27, %.lr.ph ], [ %.02954, %.lr.ph56 ]
  %19 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %5) #6
  %.sroa.014.0.copyload = load i32, ptr %19, align 4
  %20 = sext i32 %.sroa.014.0.copyload to i64
  %21 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %20) #6
  %22 = load i32, ptr %21, align 4, !tbaa !5
  %23 = add nsw i32 %22, 1
  store i32 %23, ptr %21, align 4, !tbaa !5
  %24 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv) #6
  %25 = load i32, ptr %24, align 4, !tbaa !5
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr %24, align 4, !tbaa !5
  %27 = add nsw i32 %.151, 1
  %28 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %5) #6
  %29 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt4pairIiiESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 8 dereferenceable(8) %6) #6
  br i1 %29, label %.lr.ph, label %._crit_edge

._crit_edge63:                                    ; preds = %.lr.ph62
  %30 = icmp sgt i32 %spec.select, 2
  br i1 %30, label %._crit_edge70.thread, label %35

.lr.ph62:                                         ; preds = %.lr.ph62.preheader, %.lr.ph62
  %indvars.iv73 = phi i64 [ 1, %.lr.ph62.preheader ], [ %indvars.iv.next74, %.lr.ph62 ]
  %.03260 = phi i32 [ 0, %.lr.ph62.preheader ], [ %spec.select46, %.lr.ph62 ]
  %.03459 = phi i32 [ 0, %.lr.ph62.preheader ], [ %spec.select, %.lr.ph62 ]
  %31 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv73) #6
  %32 = load i32, ptr %31, align 4, !tbaa !5
  %33 = and i32 %32, 1
  %.not45 = icmp eq i32 %33, 0
  %spec.select = add i32 %33, %.03459
  %34 = trunc nuw nsw i64 %indvars.iv73 to i32
  %spec.select46 = select i1 %.not45, i32 %.03260, i32 %34
  %indvars.iv.next74 = add nuw nsw i64 %indvars.iv73, 1
  %exitcond77.not = icmp eq i64 %indvars.iv.next74, %wide.trip.count76
  br i1 %exitcond77.not, label %._crit_edge63, label %.lr.ph62, !llvm.loop !11

35:                                               ; preds = %._crit_edge63
  %36 = icmp eq i32 %spec.select46, 0
  br i1 %36, label %.preheader, label %.thread

.preheader:                                       ; preds = %35
  br i1 %.not52, label %._crit_edge70.thread, label %.lr.ph69.preheader

.lr.ph69.preheader:                               ; preds = %.preheader
  %wide.trip.count81 = zext i32 %7 to i64
  br label %.lr.ph69

.lr.ph69:                                         ; preds = %.lr.ph69.preheader, %.lr.ph69
  %indvars.iv78 = phi i64 [ 1, %.lr.ph69.preheader ], [ %indvars.iv.next79, %.lr.ph69 ]
  %.267 = phi i32 [ 0, %.lr.ph69.preheader ], [ %spec.select47, %.lr.ph69 ]
  %37 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv78) #6
  %38 = load i32, ptr %37, align 4, !tbaa !5
  %.not44 = icmp eq i32 %38, 0
  %39 = trunc nuw nsw i64 %indvars.iv78 to i32
  %spec.select47 = select i1 %.not44, i32 %.267, i32 %39
  %indvars.iv.next79 = add nuw nsw i64 %indvars.iv78, 1
  %exitcond82.not = icmp eq i64 %indvars.iv.next79, %wide.trip.count81
  br i1 %exitcond82.not, label %._crit_edge70, label %.lr.ph69, !llvm.loop !12

._crit_edge70:                                    ; preds = %.lr.ph69
  %40 = icmp eq i32 %spec.select47, 0
  br i1 %40, label %._crit_edge70.thread, label %.thread

.thread:                                          ; preds = %35, %._crit_edge70
  %.449 = phi i32 [ %spec.select47, %._crit_edge70 ], [ %spec.select46, %35 ]
  invoke void @_Z3dfsi(i32 noundef %.449)
          to label %41 unwind label %43

41:                                               ; preds = %.thread
  %42 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) @ans) #6
  %.not42 = icmp eq i64 %42, %12
  br i1 %.not42, label %45, label %._crit_edge70.thread

43:                                               ; preds = %45, %.thread
  %44 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  br label %48

45:                                               ; preds = %41
  %46 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) @ans) #6
  %47 = call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) @ans) #6
  invoke void @_ZSt7reverseIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEEvT_S7_(ptr %46, ptr %47)
          to label %._crit_edge70.thread unwind label %43

._crit_edge70.thread:                             ; preds = %9, %.preheader50, %.preheader, %45, %41, %._crit_edge70, %._crit_edge63
  %.0 = phi i32 [ 0, %._crit_edge63 ], [ 1, %._crit_edge70 ], [ 0, %41 ], [ 1, %45 ], [ 1, %.preheader ], [ 1, %.preheader50 ], [ 1, %9 ]
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #6
  ret i32 %.0

48:                                               ; preds = %43, %13
  %.pn = phi { ptr, i32 } [ %44, %43 ], [ %14, %13 ]
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #6
  resume { ptr, i32 } %.pn
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2EmRKiRKS0_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPSt4pairIiiESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 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 #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt7reverseIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEEvT_S7_(ptr, ptr) local_unnamed_addr #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

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

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"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}
!12 = distinct !{!12, !10}


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