; LLVM IR from DionysiosB/CodeForces :: 1600-1699 (1614B-DivanAndANewProject)

; 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<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator" = type { i8 }
%"class.std::reverse_iterator" = type { %"class.__gnu_cxx::__normal_iterator" }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator.2" = type { i8 }
%"struct.std::pair" = type { i64, i64 }

@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [1 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 %"class.std::allocator", align 1
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i64, align 8
  %9 = alloca %"class.std::reverse_iterator", align 8
  %10 = alloca %"class.std::reverse_iterator", align 8
  %11 = alloca i64, align 8
  %12 = alloca %"class.std::vector.0", align 8
  %13 = alloca i64, align 8
  %14 = alloca %"class.std::allocator.2", align 1
  %15 = alloca i64, align 8
  %16 = alloca i64, align 8
  %17 = alloca i64, align 8
  %18 = alloca i64, align 8
  %19 = alloca i64, align 8
  %20 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #6
  %21 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %22

22:                                               ; preds = %137, %0
  %23 = load i64, ptr %2, align 8, !tbaa !5
  %24 = add nsw i64 %23, -1
  store i64 %24, ptr %2, align 8, !tbaa !5
  %25 = icmp ne i64 %23, 0
  br i1 %25, label %26, label %142

26:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #6
  %27 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  call void @llvm.lifetime.start.p0(i64 24, ptr %4) #6
  %28 = load i64, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %5) #6
  call void @_ZNSaISt4pairIxxEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #6
  invoke void @_ZNSt6vectorISt4pairIxxESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %28, ptr noundef nonnull align 1 dereferenceable(1) %5)
          to label %29 unwind label %35

29:                                               ; preds = %26
  call void @_ZNSt15__new_allocatorISt4pairIxxEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #6
  store i64 0, ptr %8, align 8, !tbaa !5
  br label %30

30:                                               ; preds = %50, %29
  %31 = load i64, ptr %8, align 8, !tbaa !5
  %32 = load i64, ptr %3, align 8, !tbaa !5
  %33 = icmp slt i64 %31, %32
  br i1 %33, label %39, label %34

34:                                               ; preds = %30
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #6
  br label %57

35:                                               ; preds = %26
  %36 = landingpad { ptr, i32 }
          cleanup
  %37 = extractvalue { ptr, i32 } %36, 0
  store ptr %37, ptr %6, align 8
  %38 = extractvalue { ptr, i32 } %36, 1
  store i32 %38, ptr %7, align 4
  call void @_ZNSt15__new_allocatorISt4pairIxxEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #6
  br label %141

39:                                               ; preds = %30
  %40 = load i64, ptr %8, align 8, !tbaa !5
  %41 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %40) #6
  %42 = getelementptr inbounds %"struct.std::pair", ptr %41, i32 0, i32 0
  %43 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %42)
          to label %44 unwind label %53

44:                                               ; preds = %39
  %45 = load i64, ptr %8, align 8, !tbaa !5
  %46 = add nsw i64 %45, 1
  %47 = load i64, ptr %8, align 8, !tbaa !5
  %48 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %47) #6
  %49 = getelementptr inbounds %"struct.std::pair", ptr %48, i32 0, i32 1
  store i64 %46, ptr %49, align 8, !tbaa !9
  br label %50

50:                                               ; preds = %44
  %51 = load i64, ptr %8, align 8, !tbaa !5
  %52 = add nsw i64 %51, 1
  store i64 %52, ptr %8, align 8, !tbaa !5
  br label %30, !llvm.loop !11

53:                                               ; preds = %39
  %54 = landingpad { ptr, i32 }
          cleanup
  %55 = extractvalue { ptr, i32 } %54, 0
  store ptr %55, ptr %6, align 8
  %56 = extractvalue { ptr, i32 } %54, 1
  store i32 %56, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #6
  br label %140

57:                                               ; preds = %34
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EE6rbeginEv(ptr dead_on_unwind writable sret(%"class.std::reverse_iterator") align 8 %9, ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EE4rendEv(ptr dead_on_unwind writable sret(%"class.std::reverse_iterator") align 8 %10, ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  invoke void @_ZSt4sortISt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS4_SaIS4_EEEEEEvT_SB_(ptr noundef %9, ptr noundef %10)
          to label %58 unwind label %67

58:                                               ; preds = %57
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #6
  store i64 0, ptr %11, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 24, ptr %12) #6
  %59 = load i64, ptr %3, align 8, !tbaa !5
  %60 = add nsw i64 %59, 1
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #6
  store i64 0, ptr %13, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %14) #6
  call void @_ZNSaIxEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %14) #6
  invoke void @_ZNSt6vectorIxSaIxEEC2EmRKxRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef %60, ptr noundef nonnull align 8 dereferenceable(8) %13, ptr noundef nonnull align 1 dereferenceable(1) %14)
          to label %61 unwind label %71

61:                                               ; preds = %58
  call void @_ZNSt15__new_allocatorIxED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %14) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %14) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr %15) #6
  store i64 0, ptr %15, align 8, !tbaa !5
  br label %62

62:                                               ; preds = %106, %61
  %63 = load i64, ptr %15, align 8, !tbaa !5
  %64 = load i64, ptr %3, align 8, !tbaa !5
  %65 = icmp slt i64 %63, %64
  br i1 %65, label %75, label %66

66:                                               ; preds = %62
  call void @llvm.lifetime.end.p0(i64 8, ptr %15) #6
  br label %109

67:                                               ; preds = %57
  %68 = landingpad { ptr, i32 }
          cleanup
  %69 = extractvalue { ptr, i32 } %68, 0
  store ptr %69, ptr %6, align 8
  %70 = extractvalue { ptr, i32 } %68, 1
  store i32 %70, ptr %7, align 4
  br label %140

71:                                               ; preds = %58
  %72 = landingpad { ptr, i32 }
          cleanup
  %73 = extractvalue { ptr, i32 } %72, 0
  store ptr %73, ptr %6, align 8
  %74 = extractvalue { ptr, i32 } %72, 1
  store i32 %74, ptr %7, align 4
  call void @_ZNSt15__new_allocatorIxED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %14) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %14) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #6
  br label %139

75:                                               ; preds = %62
  call void @llvm.lifetime.start.p0(i64 8, ptr %16) #6
  %76 = load i64, ptr %15, align 8, !tbaa !5
  %77 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %76) #6
  %78 = getelementptr inbounds %"struct.std::pair", ptr %77, i32 0, i32 0
  %79 = load i64, ptr %78, align 8, !tbaa !13
  store i64 %79, ptr %16, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %17) #6
  %80 = load i64, ptr %15, align 8, !tbaa !5
  %81 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %80) #6
  %82 = getelementptr inbounds %"struct.std::pair", ptr %81, i32 0, i32 1
  %83 = load i64, ptr %82, align 8, !tbaa !9
  store i64 %83, ptr %17, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %18) #6
  %84 = load i64, ptr %15, align 8, !tbaa !5
  %85 = sdiv i64 %84, 2
  %86 = add nsw i64 %85, 1
  store i64 %86, ptr %18, align 8, !tbaa !5
  %87 = load i64, ptr %16, align 8, !tbaa !5
  %88 = mul nsw i64 2, %87
  %89 = load i64, ptr %18, align 8, !tbaa !5
  %90 = mul nsw i64 %88, %89
  %91 = load i64, ptr %11, align 8, !tbaa !5
  %92 = add nsw i64 %91, %90
  store i64 %92, ptr %11, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %19) #6
  %93 = load i64, ptr %15, align 8, !tbaa !5
  %94 = srem i64 %93, 2
  %95 = icmp ne i64 %94, 0
  br i1 %95, label %96, label %98

96:                                               ; preds = %75
  %97 = load i64, ptr %18, align 8, !tbaa !5
  br label %101

98:                                               ; preds = %75
  %99 = load i64, ptr %18, align 8, !tbaa !5
  %100 = sub nsw i64 0, %99
  br label %101

101:                                              ; preds = %98, %96
  %102 = phi i64 [ %97, %96 ], [ %100, %98 ]
  store i64 %102, ptr %19, align 8, !tbaa !5
  %103 = load i64, ptr %19, align 8, !tbaa !5
  %104 = load i64, ptr %17, align 8, !tbaa !5
  %105 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef %104) #6
  store i64 %103, ptr %105, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %19) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %18) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %17) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #6
  br label %106

106:                                              ; preds = %101
  %107 = load i64, ptr %15, align 8, !tbaa !5
  %108 = add nsw i64 %107, 1
  store i64 %108, ptr %15, align 8, !tbaa !5
  br label %62, !llvm.loop !14

109:                                              ; preds = %66
  %110 = load i64, ptr %11, align 8, !tbaa !5
  %111 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef %110)
          to label %112 unwind label %118

112:                                              ; preds = %109
  call void @llvm.lifetime.start.p0(i64 8, ptr %20) #6
  store i64 0, ptr %20, align 8, !tbaa !5
  br label %113

113:                                              ; preds = %128, %112
  %114 = load i64, ptr %20, align 8, !tbaa !5
  %115 = load i64, ptr %3, align 8, !tbaa !5
  %116 = icmp sle i64 %114, %115
  br i1 %116, label %122, label %117

117:                                              ; preds = %113
  call void @llvm.lifetime.end.p0(i64 8, ptr %20) #6
  br label %135

118:                                              ; preds = %135, %109
  %119 = landingpad { ptr, i32 }
          cleanup
  %120 = extractvalue { ptr, i32 } %119, 0
  store ptr %120, ptr %6, align 8
  %121 = extractvalue { ptr, i32 } %119, 1
  store i32 %121, ptr %7, align 4
  br label %138

122:                                              ; preds = %113
  %123 = load i64, ptr %20, align 8, !tbaa !5
  %124 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef %123) #6
  %125 = load i64, ptr %124, align 8, !tbaa !5
  %126 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.2, i64 noundef %125)
          to label %127 unwind label %131

127:                                              ; preds = %122
  br label %128

128:                                              ; preds = %127
  %129 = load i64, ptr %20, align 8, !tbaa !5
  %130 = add nsw i64 %129, 1
  store i64 %130, ptr %20, align 8, !tbaa !5
  br label %113, !llvm.loop !15

131:                                              ; preds = %122
  %132 = landingpad { ptr, i32 }
          cleanup
  %133 = extractvalue { ptr, i32 } %132, 0
  store ptr %133, ptr %6, align 8
  %134 = extractvalue { ptr, i32 } %132, 1
  store i32 %134, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %20) #6
  br label %138

135:                                              ; preds = %117
  %136 = invoke i32 @puts(ptr noundef @.str.3)
          to label %137 unwind label %118

137:                                              ; preds = %135
  call void @_ZNSt6vectorIxSaIxEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %12) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %12) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #6
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EED2Ev(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
  br label %22, !llvm.loop !16

138:                                              ; preds = %131, %118
  call void @_ZNSt6vectorIxSaIxEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %12) #6
  br label %139

139:                                              ; preds = %138, %71
  call void @llvm.lifetime.end.p0(i64 24, ptr %12) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #6
  br label %140

140:                                              ; preds = %139, %67, %53
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  br label %141

141:                                              ; preds = %140, %35
  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 %144

142:                                              ; preds = %22
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  %143 = load i32, ptr %1, align 4
  ret i32 %143

144:                                              ; preds = %141
  %145 = load ptr, ptr %6, align 8
  %146 = load i32, ptr %7, align 4
  %147 = insertvalue { ptr, i32 } poison, ptr %145, 0
  %148 = insertvalue { ptr, i32 } %147, i32 %146, 1
  resume { ptr, i32 } %148
}

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

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaISt4pairIxxEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIxxESaIS1_EEC2EmRKS2_(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 noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortISt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS4_SaIS4_EEEEEEvT_SB_(ptr noundef, ptr noundef) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIxxESaIS1_EE6rbeginEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIxxESaIS1_EE4rendEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaIxEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIxSaIxEEC2EmRKxRKS0_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #3 align 2

declare i32 @printf(ptr noundef, ...) #2

declare i32 @puts(ptr noundef) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIxSaIxEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIxxESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorISt4pairIxxEED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIxED2Ev(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 uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #6 = { nounwind }

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

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 8}
!10 = !{!"_ZTSSt4pairIxxE", !6, i64 0, !6, i64 8}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!10, !6, i64 0}
!14 = distinct !{!14, !12}
!15 = distinct !{!15, !12}
!16 = distinct !{!16, !12}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

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

@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [1 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 i64, align 8
  %3 = alloca %"class.std::vector", align 8
  %4 = alloca %"class.std::allocator", align 1
  %5 = alloca %"class.std::reverse_iterator", align 8
  %6 = alloca %"class.std::reverse_iterator", align 8
  %7 = alloca %"class.std::vector.0", align 8
  %8 = alloca i64, align 8
  %9 = alloca %"class.std::allocator.2", align 1
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #6
  %10 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %11 = load i64, ptr %1, align 8, !tbaa !5
  %12 = add nsw i64 %11, -1
  store i64 %12, ptr %1, align 8, !tbaa !5
  %.not45 = icmp eq i64 %11, 0
  br i1 %.not45, label %._crit_edge48, label %.lr.ph47

.lr.ph47:                                         ; preds = %0, %._crit_edge44
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #6
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %3) #6
  %14 = load i64, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %4) #6
  call void @_ZNSaISt4pairIxxEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #6
  invoke void @_ZNSt6vectorISt4pairIxxESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %14, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %15 unwind label %18

15:                                               ; preds = %.lr.ph47
  call void @_ZNSt15__new_allocatorISt4pairIxxEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #6
  %16 = load i64, ptr %2, align 8, !tbaa !5
  %17 = icmp sgt i64 %16, 0
  br i1 %17, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %15
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EE6rbeginEv(ptr dead_on_unwind nonnull writable sret(%"class.std::reverse_iterator") align 8 %5, ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EE4rendEv(ptr dead_on_unwind nonnull writable sret(%"class.std::reverse_iterator") align 8 %6, ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  invoke void @_ZSt4sortISt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS4_SaIS4_EEEEEEvT_SB_(ptr noundef nonnull %5, ptr noundef nonnull %6)
          to label %27 unwind label %35

18:                                               ; preds = %.lr.ph47
  %19 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorISt4pairIxxEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #6
  br label %65

.lr.ph:                                           ; preds = %15, %.lr.ph
  %.02734 = phi i64 [ %22, %.lr.ph ], [ 0, %15 ]
  %20 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %.02734) #6
  %21 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %20)
  %22 = add nuw nsw i64 %.02734, 1
  %23 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %.02734) #6
  %24 = getelementptr inbounds i8, ptr %23, i64 8
  store i64 %22, ptr %24, align 8, !tbaa !9
  %25 = load i64, ptr %2, align 8, !tbaa !5
  %26 = icmp slt i64 %22, %25
  br i1 %26, label %.lr.ph, label %._crit_edge, !llvm.loop !11

27:                                               ; preds = %._crit_edge
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %7) #6
  %28 = load i64, ptr %2, align 8, !tbaa !5
  %29 = add nsw i64 %28, 1
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %8) #6
  store i64 0, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %9) #6
  call void @_ZNSaIxEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %9) #6
  invoke void @_ZNSt6vectorIxSaIxEEC2EmRKxRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %29, ptr noundef nonnull align 8 dereferenceable(8) %8, ptr noundef nonnull align 1 dereferenceable(1) %9)
          to label %30 unwind label %37

30:                                               ; preds = %27
  call void @_ZNSt15__new_allocatorIxED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %9) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %9) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %8) #6
  %31 = load i64, ptr %2, align 8, !tbaa !5
  %32 = icmp sgt i64 %31, 0
  br i1 %32, label %.lr.ph38, label %._crit_edge39

._crit_edge39:                                    ; preds = %.lr.ph38, %30
  %.028.lcssa = phi i64 [ 0, %30 ], [ %48, %.lr.ph38 ]
  %33 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef %.028.lcssa)
  %34 = load i64, ptr %2, align 8, !tbaa !5
  %.not3240 = icmp slt i64 %34, 0
  br i1 %.not3240, label %._crit_edge44, label %.lr.ph43

35:                                               ; preds = %._crit_edge
  %36 = landingpad { ptr, i32 }
          cleanup
  br label %64

37:                                               ; preds = %27
  %38 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIxED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %9) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %9) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %8) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %7) #6
  br label %64

.lr.ph38:                                         ; preds = %30, %.lr.ph38
  %.02836 = phi i64 [ %48, %.lr.ph38 ], [ 0, %30 ]
  %.02935 = phi i64 [ %53, %.lr.ph38 ], [ 0, %30 ]
  %39 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %.02935) #6
  %40 = load i64, ptr %39, align 8, !tbaa !13
  %41 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %.02935) #6
  %42 = getelementptr inbounds i8, ptr %41, i64 8
  %43 = load i64, ptr %42, align 8, !tbaa !9
  %44 = lshr i64 %.02935, 1
  %45 = add nuw nsw i64 %44, 1
  %46 = shl nuw i64 %45, 1
  %47 = mul i64 %46, %40
  %48 = add nsw i64 %47, %.02836
  %49 = and i64 %.02935, 1
  %.not33 = icmp eq i64 %49, 0
  %50 = xor i64 %44, -1
  %51 = select i1 %.not33, i64 %50, i64 %45
  %52 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %43) #6
  store i64 %51, ptr %52, align 8, !tbaa !5
  %53 = add nuw nsw i64 %.02935, 1
  %54 = load i64, ptr %2, align 8, !tbaa !5
  %55 = icmp slt i64 %53, %54
  br i1 %55, label %.lr.ph38, label %._crit_edge39, !llvm.loop !14

._crit_edge44:                                    ; preds = %.lr.ph43, %._crit_edge39
  %56 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.3)
  call void @_ZNSt6vectorIxSaIxEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %7) #6
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #6
  %57 = load i64, ptr %1, align 8, !tbaa !5
  %58 = add nsw i64 %57, -1
  store i64 %58, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %57, 0
  br i1 %.not, label %._crit_edge48, label %.lr.ph47, !llvm.loop !15

.lr.ph43:                                         ; preds = %._crit_edge39, %.lr.ph43
  %.041 = phi i64 [ %62, %.lr.ph43 ], [ 0, %._crit_edge39 ]
  %59 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %.041) #6
  %60 = load i64, ptr %59, align 8, !tbaa !5
  %61 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i64 noundef %60)
  %62 = add nuw nsw i64 %.041, 1
  %63 = load i64, ptr %2, align 8, !tbaa !5
  %.not32.not = icmp slt i64 %.041, %63
  br i1 %.not32.not, label %.lr.ph43, label %._crit_edge44, !llvm.loop !16

64:                                               ; preds = %37, %35
  %.pn = phi { ptr, i32 } [ %38, %37 ], [ %36, %35 ]
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  br label %65

65:                                               ; preds = %64, %18
  %.pn.pn = phi { ptr, i32 } [ %.pn, %64 ], [ %19, %18 ]
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #6
  resume { ptr, i32 } %.pn.pn

._crit_edge48:                                    ; preds = %._crit_edge44, %0
  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: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaISt4pairIxxEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIxxESaIS1_EEC2EmRKS2_(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 noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortISt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS4_SaIS4_EEEEEEvT_SB_(ptr noundef, ptr noundef) local_unnamed_addr #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIxxESaIS1_EE6rbeginEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIxxESaIS1_EE4rendEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaIxEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIxSaIxEEC2EmRKxRKS0_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #3 align 2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @puts(ptr nocapture noundef readonly) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIxSaIxEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIxxESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorISt4pairIxxEED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIxED2Ev(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 = { nofree nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #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 uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #6 = { nounwind }

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

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 8}
!10 = !{!"_ZTSSt4pairIxxE", !6, i64 0, !6, i64 8}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!10, !6, i64 0}
!14 = distinct !{!14, !12}
!15 = distinct !{!15, !12}
!16 = distinct !{!16, !12}


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