; LLVM IR from DionysiosB/CodeForces :: 1857D-StrongVertices (main)

; 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>, std::allocator<std::pair<long, long>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<long, long>, std::allocator<std::pair<long, long>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<long, long>, std::allocator<std::pair<long, long>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<long, long>, std::allocator<std::pair<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 }
%"struct.std::pair" = type { i64, i64 }

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

18:                                               ; preds = %134, %0
  %19 = load i64, ptr %2, align 8, !tbaa !5
  %20 = add nsw i64 %19, -1
  store i64 %20, ptr %2, align 8, !tbaa !5
  %21 = icmp ne i64 %19, 0
  br i1 %21, label %22, label %138

22:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #6
  %23 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  call void @llvm.lifetime.start.p0(i64 24, ptr %4) #6
  %24 = load i64, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %5) #6
  call void @_ZNSaISt4pairIllEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #6
  invoke void @_ZNSt6vectorISt4pairIllESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %24, ptr noundef nonnull align 1 dereferenceable(1) %5)
          to label %25 unwind label %31

25:                                               ; preds = %22
  call void @_ZNSt15__new_allocatorISt4pairIllEED2Ev(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 %26

26:                                               ; preds = %46, %25
  %27 = load i64, ptr %8, align 8, !tbaa !5
  %28 = load i64, ptr %3, align 8, !tbaa !5
  %29 = icmp slt i64 %27, %28
  br i1 %29, label %35, label %30

30:                                               ; preds = %26
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #6
  br label %53

31:                                               ; preds = %22
  %32 = landingpad { ptr, i32 }
          cleanup
  %33 = extractvalue { ptr, i32 } %32, 0
  store ptr %33, ptr %6, align 8
  %34 = extractvalue { ptr, i32 } %32, 1
  store i32 %34, ptr %7, align 4
  call void @_ZNSt15__new_allocatorISt4pairIllEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #6
  br label %137

35:                                               ; preds = %26
  %36 = load i64, ptr %8, align 8, !tbaa !5
  %37 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIllESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %36) #6
  %38 = getelementptr inbounds %"struct.std::pair", ptr %37, i32 0, i32 0
  %39 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %38)
          to label %40 unwind label %49

40:                                               ; preds = %35
  %41 = load i64, ptr %8, align 8, !tbaa !5
  %42 = add nsw i64 %41, 1
  %43 = load i64, ptr %8, align 8, !tbaa !5
  %44 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIllESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %43) #6
  %45 = getelementptr inbounds %"struct.std::pair", ptr %44, i32 0, i32 1
  store i64 %42, ptr %45, align 8, !tbaa !9
  br label %46

46:                                               ; preds = %40
  %47 = load i64, ptr %8, align 8, !tbaa !5
  %48 = add nsw i64 %47, 1
  store i64 %48, ptr %8, align 8, !tbaa !5
  br label %26, !llvm.loop !11

49:                                               ; preds = %35
  %50 = landingpad { ptr, i32 }
          cleanup
  %51 = extractvalue { ptr, i32 } %50, 0
  store ptr %51, ptr %6, align 8
  %52 = extractvalue { ptr, i32 } %50, 1
  store i32 %52, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #6
  br label %136

53:                                               ; preds = %30
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #6
  store i64 0, ptr %9, align 8, !tbaa !5
  br label %54

54:                                               ; preds = %68, %53
  %55 = load i64, ptr %9, align 8, !tbaa !5
  %56 = load i64, ptr %3, align 8, !tbaa !5
  %57 = icmp slt i64 %55, %56
  br i1 %57, label %59, label %58

58:                                               ; preds = %54
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #6
  br label %75

59:                                               ; preds = %54
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #6
  %60 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %10)
          to label %61 unwind label %71

61:                                               ; preds = %59
  %62 = load i64, ptr %10, align 8, !tbaa !5
  %63 = load i64, ptr %9, align 8, !tbaa !5
  %64 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIllESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %63) #6
  %65 = getelementptr inbounds %"struct.std::pair", ptr %64, i32 0, i32 0
  %66 = load i64, ptr %65, align 8, !tbaa !13
  %67 = sub nsw i64 %66, %62
  store i64 %67, ptr %65, align 8, !tbaa !13
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #6
  br label %68

68:                                               ; preds = %61
  %69 = load i64, ptr %9, align 8, !tbaa !5
  %70 = add nsw i64 %69, 1
  store i64 %70, ptr %9, align 8, !tbaa !5
  br label %54, !llvm.loop !14

71:                                               ; preds = %59
  %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 @llvm.lifetime.end.p0(i64 8, ptr %10) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #6
  br label %136

75:                                               ; preds = %58
  call void @_ZNSt6vectorISt4pairIllESaIS1_EE6rbeginEv(ptr dead_on_unwind writable sret(%"class.std::reverse_iterator") align 8 %11, ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  call void @_ZNSt6vectorISt4pairIllESaIS1_EE4rendEv(ptr dead_on_unwind writable sret(%"class.std::reverse_iterator") align 8 %12, ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  invoke void @_ZSt4sortISt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPSt4pairIllESt6vectorIS4_SaIS4_EEEEEEvT_SB_(ptr noundef %11, ptr noundef %12)
          to label %76 unwind label %82

76:                                               ; preds = %75
  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 8, ptr %14) #6
  store i64 0, ptr %14, align 8, !tbaa !5
  br label %77

77:                                               ; preds = %100, %76
  %78 = load i64, ptr %14, align 8, !tbaa !5
  %79 = load i64, ptr %3, align 8, !tbaa !5
  %80 = icmp slt i64 %78, %79
  br i1 %80, label %86, label %81

81:                                               ; preds = %77
  store i32 10, ptr %15, align 4
  br label %103

82:                                               ; preds = %75
  %83 = landingpad { ptr, i32 }
          cleanup
  %84 = extractvalue { ptr, i32 } %83, 0
  store ptr %84, ptr %6, align 8
  %85 = extractvalue { ptr, i32 } %83, 1
  store i32 %85, ptr %7, align 4
  br label %136

86:                                               ; preds = %77
  %87 = load i64, ptr %14, align 8, !tbaa !5
  %88 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIllESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %87) #6
  %89 = getelementptr inbounds %"struct.std::pair", ptr %88, i32 0, i32 0
  %90 = load i64, ptr %89, align 8, !tbaa !13
  %91 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIllESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef 0) #6
  %92 = getelementptr inbounds %"struct.std::pair", ptr %91, i32 0, i32 0
  %93 = load i64, ptr %92, align 8, !tbaa !13
  %94 = icmp eq i64 %90, %93
  br i1 %94, label %95, label %98

95:                                               ; preds = %86
  %96 = load i64, ptr %13, align 8, !tbaa !5
  %97 = add nsw i64 %96, 1
  store i64 %97, ptr %13, align 8, !tbaa !5
  br label %99

98:                                               ; preds = %86
  store i32 10, ptr %15, align 4
  br label %103

99:                                               ; preds = %95
  br label %100

100:                                              ; preds = %99
  %101 = load i64, ptr %14, align 8, !tbaa !5
  %102 = add nsw i64 %101, 1
  store i64 %102, ptr %14, align 8, !tbaa !5
  br label %77, !llvm.loop !15

103:                                              ; preds = %98, %81
  call void @llvm.lifetime.end.p0(i64 8, ptr %14) #6
  br label %104

104:                                              ; preds = %103
  %105 = load i64, ptr %13, align 8, !tbaa !5
  %106 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef %105)
          to label %107 unwind label %114

107:                                              ; preds = %104
  call void @llvm.lifetime.start.p0(i64 8, ptr %16) #6
  %108 = load i64, ptr %13, align 8, !tbaa !5
  %109 = sub nsw i64 %108, 1
  store i64 %109, ptr %16, align 8, !tbaa !5
  br label %110

110:                                              ; preds = %125, %107
  %111 = load i64, ptr %16, align 8, !tbaa !5
  %112 = icmp sge i64 %111, 0
  br i1 %112, label %118, label %113

113:                                              ; preds = %110
  store i32 13, ptr %15, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #6
  br label %132

114:                                              ; preds = %132, %104
  %115 = landingpad { ptr, i32 }
          cleanup
  %116 = extractvalue { ptr, i32 } %115, 0
  store ptr %116, ptr %6, align 8
  %117 = extractvalue { ptr, i32 } %115, 1
  store i32 %117, ptr %7, align 4
  br label %135

118:                                              ; preds = %110
  %119 = load i64, ptr %16, align 8, !tbaa !5
  %120 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIllESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %119) #6
  %121 = getelementptr inbounds %"struct.std::pair", ptr %120, i32 0, i32 1
  %122 = load i64, ptr %121, align 8, !tbaa !9
  %123 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.2, i64 noundef %122)
          to label %124 unwind label %128

124:                                              ; preds = %118
  br label %125

125:                                              ; preds = %124
  %126 = load i64, ptr %16, align 8, !tbaa !5
  %127 = add nsw i64 %126, -1
  store i64 %127, ptr %16, align 8, !tbaa !5
  br label %110, !llvm.loop !16

128:                                              ; preds = %118
  %129 = landingpad { ptr, i32 }
          cleanup
  %130 = extractvalue { ptr, i32 } %129, 0
  store ptr %130, ptr %6, align 8
  %131 = extractvalue { ptr, i32 } %129, 1
  store i32 %131, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #6
  br label %135

132:                                              ; preds = %113
  %133 = invoke i32 @puts(ptr noundef @.str.3)
          to label %134 unwind label %114

134:                                              ; preds = %132
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #6
  call void @_ZNSt6vectorISt4pairIllESaIS1_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 %18, !llvm.loop !17

135:                                              ; preds = %128, %114
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #6
  br label %136

136:                                              ; preds = %135, %82, %71, %49
  call void @_ZNSt6vectorISt4pairIllESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  br label %137

137:                                              ; preds = %136, %31
  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 %140

138:                                              ; preds = %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  %139 = load i32, ptr %1, align 4
  ret i32 %139

140:                                              ; preds = %137
  %141 = load ptr, ptr %6, align 8
  %142 = load i32, ptr %7, align 4
  %143 = insertvalue { ptr, i32 } poison, ptr %141, 0
  %144 = insertvalue { ptr, i32 } %143, i32 %142, 1
  resume { ptr, i32 } %144
}

; 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 @_ZNSaISt4pairIllEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIllESaIS1_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 @_ZNSt6vectorISt4pairIllESaIS1_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_iteratorIPSt4pairIllESt6vectorIS4_SaIS4_EEEEEEvT_SB_(ptr noundef, ptr noundef) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIllESaIS1_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 @_ZNSt6vectorISt4pairIllESaIS1_EE4rendEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

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

declare i32 @puts(ptr noundef) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIllESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorISt4pairIllEED2Ev(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", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 8}
!10 = !{!"_ZTSSt4pairIllE", !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}
!17 = distinct !{!17, !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>, std::allocator<std::pair<long, long>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<long, long>, std::allocator<std::pair<long, long>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<long, long>, std::allocator<std::pair<long, long>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<long, long>, std::allocator<std::pair<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 }

@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 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 i64, align 8
  %6 = alloca %"class.std::reverse_iterator", align 8
  %7 = alloca %"class.std::reverse_iterator", align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #6
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %9 = load i64, ptr %1, align 8, !tbaa !5
  %10 = add nsw i64 %9, -1
  store i64 %10, ptr %1, align 8, !tbaa !5
  %.not40 = icmp eq i64 %9, 0
  br i1 %.not40, label %._crit_edge43, label %.lr.ph42

.lr.ph42:                                         ; preds = %0, %._crit_edge39
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #6
  %11 = 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
  %12 = load i64, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %4) #6
  call void @_ZNSaISt4pairIllEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #6
  invoke void @_ZNSt6vectorISt4pairIllESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %12, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %13 unwind label %17

13:                                               ; preds = %.lr.ph42
  call void @_ZNSt15__new_allocatorISt4pairIllEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #6
  %14 = load i64, ptr %2, align 8, !tbaa !5
  %15 = icmp sgt i64 %14, 0
  br i1 %15, label %.lr.ph, label %._crit_edge

.preheader26:                                     ; preds = %.lr.ph
  %16 = icmp sgt i64 %24, 0
  br i1 %16, label %.lr.ph29, label %._crit_edge

17:                                               ; preds = %.lr.ph42
  %18 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorISt4pairIllEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #6
  br label %58

.lr.ph:                                           ; preds = %13, %.lr.ph
  %.02227 = phi i64 [ %21, %.lr.ph ], [ 0, %13 ]
  %19 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIllESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %.02227) #6
  %20 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %19)
  %21 = add nuw nsw i64 %.02227, 1
  %22 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIllESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %.02227) #6
  %23 = getelementptr inbounds i8, ptr %22, i64 8
  store i64 %21, ptr %23, align 8, !tbaa !9
  %24 = load i64, ptr %2, align 8, !tbaa !5
  %25 = icmp slt i64 %21, %24
  br i1 %25, label %.lr.ph, label %.preheader26, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph29, %13, %.preheader26
  call void @_ZNSt6vectorISt4pairIllESaIS1_EE6rbeginEv(ptr dead_on_unwind nonnull writable sret(%"class.std::reverse_iterator") align 8 %6, ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  call void @_ZNSt6vectorISt4pairIllESaIS1_EE4rendEv(ptr dead_on_unwind nonnull writable sret(%"class.std::reverse_iterator") align 8 %7, ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  invoke void @_ZSt4sortISt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPSt4pairIllESt6vectorIS4_SaIS4_EEEEEEvT_SB_(ptr noundef nonnull %6, ptr noundef nonnull %7)
          to label %.preheader unwind label %37

.preheader:                                       ; preds = %._crit_edge
  %26 = load i64, ptr %2, align 8, !tbaa !5
  %27 = icmp sgt i64 %26, 0
  br i1 %27, label %.lr.ph32, label %._crit_edge33.thread46

._crit_edge33.thread46:                           ; preds = %.preheader
  %28 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef 0)
  br label %._crit_edge39

.lr.ph29:                                         ; preds = %.preheader26, %.lr.ph29
  %.02128 = phi i64 [ %34, %.lr.ph29 ], [ 0, %.preheader26 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #6
  %29 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %5)
  %30 = load i64, ptr %5, align 8, !tbaa !5
  %31 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIllESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %.02128) #6
  %32 = load i64, ptr %31, align 8, !tbaa !13
  %33 = sub nsw i64 %32, %30
  store i64 %33, ptr %31, align 8, !tbaa !13
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #6
  %34 = add nuw nsw i64 %.02128, 1
  %35 = load i64, ptr %2, align 8, !tbaa !5
  %36 = icmp slt i64 %34, %35
  br i1 %36, label %.lr.ph29, label %._crit_edge, !llvm.loop !14

37:                                               ; preds = %._crit_edge
  %38 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt6vectorISt4pairIllESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  br label %58

.lr.ph32:                                         ; preds = %.preheader, %44
  %.01931 = phi i64 [ %45, %44 ], [ 0, %.preheader ]
  %39 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIllESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %.01931) #6
  %40 = load i64, ptr %39, align 8, !tbaa !13
  %41 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIllESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef 0) #6
  %42 = load i64, ptr %41, align 8, !tbaa !13
  %43 = icmp eq i64 %40, %42
  br i1 %43, label %44, label %._crit_edge33

44:                                               ; preds = %.lr.ph32
  %45 = add nuw nsw i64 %.01931, 1
  %46 = load i64, ptr %2, align 8, !tbaa !5
  %47 = icmp slt i64 %45, %46
  br i1 %47, label %.lr.ph32, label %._crit_edge33.thread, !llvm.loop !15

._crit_edge33.thread:                             ; preds = %44
  %48 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef %45)
  br label %.lr.ph38.preheader

._crit_edge33:                                    ; preds = %.lr.ph32
  %49 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef %.01931)
  %.not50 = icmp eq i64 %.01931, 0
  br i1 %.not50, label %._crit_edge39, label %.lr.ph38.preheader

.lr.ph38.preheader:                               ; preds = %._crit_edge33.thread, %._crit_edge33
  %.0.in36.ph = phi i64 [ %.01931, %._crit_edge33 ], [ %45, %._crit_edge33.thread ]
  br label %.lr.ph38

._crit_edge39:                                    ; preds = %.lr.ph38, %._crit_edge33.thread46, %._crit_edge33
  %50 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.3)
  call void @_ZNSt6vectorISt4pairIllESaIS1_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
  %51 = load i64, ptr %1, align 8, !tbaa !5
  %52 = add nsw i64 %51, -1
  store i64 %52, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %51, 0
  br i1 %.not, label %._crit_edge43, label %.lr.ph42, !llvm.loop !16

.lr.ph38:                                         ; preds = %.lr.ph38.preheader, %.lr.ph38
  %.0.in36 = phi i64 [ %.0, %.lr.ph38 ], [ %.0.in36.ph, %.lr.ph38.preheader ]
  %.0 = add nsw i64 %.0.in36, -1
  %53 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIllESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %.0) #6
  %54 = getelementptr inbounds i8, ptr %53, i64 8
  %55 = load i64, ptr %54, align 8, !tbaa !9
  %56 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i64 noundef %55)
  %57 = icmp sgt i64 %.0.in36, 1
  br i1 %57, label %.lr.ph38, label %._crit_edge39, !llvm.loop !17

58:                                               ; preds = %37, %17
  %.pn = phi { ptr, i32 } [ %38, %37 ], [ %18, %17 ]
  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

._crit_edge43:                                    ; preds = %._crit_edge39, %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 @_ZNSaISt4pairIllEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIllESaIS1_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 @_ZNSt6vectorISt4pairIllESaIS1_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_iteratorIPSt4pairIllESt6vectorIS4_SaIS4_EEEEEEvT_SB_(ptr noundef, ptr noundef) local_unnamed_addr #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIllESaIS1_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 @_ZNSt6vectorISt4pairIllESaIS1_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: 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 @_ZNSt6vectorISt4pairIllESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorISt4pairIllEED2Ev(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", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 8}
!10 = !{!"_ZTSSt4pairIllE", !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}
!17 = distinct !{!17, !12}


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