; LLVM IR from AnneLivia/Competitive-Programming :: Online Judges/URI/1868 (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::vector<char>, std::allocator<std::vector<char>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<char>, std::allocator<std::vector<char>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<char>, std::allocator<std::vector<char>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<char>, std::allocator<std::vector<char>>>::_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<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::vector.5" = type { %"struct.std::_Vector_base.6" }
%"struct.std::_Vector_base.6" = type { %"struct.std::_Vector_base<char, std::allocator<char>>::_Vector_impl" }
%"struct.std::_Vector_base<char, std::allocator<char>>::_Vector_impl" = type { %"struct.std::_Vector_base<char, std::allocator<char>>::_Vector_impl_data" }
%"struct.std::_Vector_base<char, std::allocator<char>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.10" = type { %"struct.std::_Vector_base.11" }
%"struct.std::_Vector_base.11" = 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 }

@v = external dso_local global %"class.std::vector", align 8
@vis = external dso_local global %"class.std::vector.0", align 8
@dir = external dso_local global i8, align 1
@lef = external dso_local global i8, align 1
@up = external dso_local global i8, align 1
@down = external dso_local global i8, align 1
@_ZSt3cin = external global %"class.std::basic_istream", align 8

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5printv() #0

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IcSaIcEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3dfsii(i32 noundef, i32 noundef) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #3 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca %"class.std::vector.5", align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca %"class.std::vector.10", align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i8, align 1
  %11 = alloca i8, align 1
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  br label %12

12:                                               ; preds = %90, %0
  %13 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %14 = load ptr, ptr %13, align 8, !tbaa !5
  %15 = getelementptr i8, ptr %14, i64 -24
  %16 = load i64, ptr %15, align 8
  %17 = getelementptr inbounds i8, ptr %13, i64 %16
  %18 = call noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264) %17)
  br i1 %18, label %19, label %22

19:                                               ; preds = %12
  %20 = load i32, ptr %2, align 4, !tbaa !8
  %21 = icmp ne i32 %20, 0
  br label %22

22:                                               ; preds = %19, %12
  %23 = phi i1 [ false, %12 ], [ %21, %19 ]
  br i1 %23, label %24, label %91

24:                                               ; preds = %22
  call void @_ZNSt6vectorIS_IcSaIcEESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) @v) #6
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) @vis) #6
  store i8 0, ptr @dir, align 1, !tbaa !11
  store i8 1, ptr @down, align 1, !tbaa !11
  store i8 1, ptr @up, align 1, !tbaa !11
  store i8 1, ptr @lef, align 1, !tbaa !11
  %25 = load i32, ptr %2, align 4, !tbaa !8
  %26 = sext i32 %25 to i64
  call void @llvm.lifetime.start.p0(i64 24, ptr %3) #6
  call void @llvm.memset.p0.i64(ptr align 8 %3, i8 0, i64 24, i1 false)
  call void @_ZNSt6vectorIcSaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  invoke void @_ZNSt6vectorIS_IcSaIcEESaIS1_EE6assignEmRKS1_(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %26, ptr noundef nonnull align 8 dereferenceable(24) %3)
          to label %27 unwind label %36

27:                                               ; preds = %24
  call void @_ZNSt6vectorIcSaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %3) #6
  %28 = load i32, ptr %2, align 4, !tbaa !8
  %29 = sext i32 %28 to i64
  call void @llvm.lifetime.start.p0(i64 24, ptr %6) #6
  call void @llvm.memset.p0.i64(ptr align 8 %6, i8 0, i64 24, i1 false)
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #6
  invoke void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE6assignEmRKS1_(ptr noundef nonnull align 8 dereferenceable(24) @vis, i64 noundef %29, ptr noundef nonnull align 8 dereferenceable(24) %6)
          to label %30 unwind label %40

30:                                               ; preds = %27
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %6) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #6
  store i32 0, ptr %7, align 4, !tbaa !8
  br label %31

31:                                               ; preds = %78, %30
  %32 = load i32, ptr %7, align 4, !tbaa !8
  %33 = load i32, ptr %2, align 4, !tbaa !8
  %34 = icmp slt i32 %32, %33
  br i1 %34, label %44, label %35

35:                                               ; preds = %31
  store i32 4, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #6
  br label %81

36:                                               ; preds = %24
  %37 = landingpad { ptr, i32 }
          cleanup
  %38 = extractvalue { ptr, i32 } %37, 0
  store ptr %38, ptr %4, align 8
  %39 = extractvalue { ptr, i32 } %37, 1
  store i32 %39, ptr %5, align 4
  call void @_ZNSt6vectorIcSaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %3) #6
  br label %93

40:                                               ; preds = %27
  %41 = landingpad { ptr, i32 }
          cleanup
  %42 = extractvalue { ptr, i32 } %41, 0
  store ptr %42, ptr %4, align 8
  %43 = extractvalue { ptr, i32 } %41, 1
  store i32 %43, ptr %5, align 4
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %6) #6
  br label %93

44:                                               ; preds = %31
  %45 = load i32, ptr %7, align 4, !tbaa !8
  %46 = sext i32 %45 to i64
  %47 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @vis, i64 noundef %46) #6
  %48 = load i32, ptr %2, align 4, !tbaa !8
  %49 = sext i32 %48 to i64
  call void @_ZNSt6vectorIiSaIiEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24) %47, i64 noundef %49)
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #6
  store i32 0, ptr %9, align 4, !tbaa !8
  br label %50

50:                                               ; preds = %74, %44
  %51 = load i32, ptr %9, align 4, !tbaa !8
  %52 = load i32, ptr %2, align 4, !tbaa !8
  %53 = icmp slt i32 %51, %52
  br i1 %53, label %55, label %54

54:                                               ; preds = %50
  store i32 7, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #6
  br label %77

55:                                               ; preds = %50
  %56 = load i32, ptr %7, align 4, !tbaa !8
  %57 = load i32, ptr %2, align 4, !tbaa !8
  %58 = sdiv i32 %57, 2
  %59 = icmp eq i32 %56, %58
  br i1 %59, label %60, label %69

60:                                               ; preds = %55
  %61 = load i32, ptr %9, align 4, !tbaa !8
  %62 = load i32, ptr %2, align 4, !tbaa !8
  %63 = sdiv i32 %62, 2
  %64 = icmp eq i32 %61, %63
  br i1 %64, label %65, label %69

65:                                               ; preds = %60
  %66 = load i32, ptr %7, align 4, !tbaa !8
  %67 = sext i32 %66 to i64
  %68 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IcSaIcEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %67) #6
  call void @llvm.lifetime.start.p0(i64 1, ptr %10) #6
  store i8 88, ptr %10, align 1, !tbaa !13
  call void @_ZNSt6vectorIcSaIcEE9push_backEOc(ptr noundef nonnull align 8 dereferenceable(24) %68, ptr noundef nonnull align 1 dereferenceable(1) %10)
  call void @llvm.lifetime.end.p0(i64 1, ptr %10) #6
  br label %73

69:                                               ; preds = %60, %55
  %70 = load i32, ptr %7, align 4, !tbaa !8
  %71 = sext i32 %70 to i64
  %72 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IcSaIcEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %71) #6
  call void @llvm.lifetime.start.p0(i64 1, ptr %11) #6
  store i8 79, ptr %11, align 1, !tbaa !13
  call void @_ZNSt6vectorIcSaIcEE9push_backEOc(ptr noundef nonnull align 8 dereferenceable(24) %72, ptr noundef nonnull align 1 dereferenceable(1) %11)
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #6
  br label %73

73:                                               ; preds = %69, %65
  br label %74

74:                                               ; preds = %73
  %75 = load i32, ptr %9, align 4, !tbaa !8
  %76 = add nsw i32 %75, 1
  store i32 %76, ptr %9, align 4, !tbaa !8
  br label %50, !llvm.loop !14

77:                                               ; preds = %54
  br label %78

78:                                               ; preds = %77
  %79 = load i32, ptr %7, align 4, !tbaa !8
  %80 = add nsw i32 %79, 1
  store i32 %80, ptr %7, align 4, !tbaa !8
  br label %31, !llvm.loop !16

81:                                               ; preds = %35
  %82 = load i32, ptr %2, align 4, !tbaa !8
  %83 = icmp ne i32 %82, 1
  br i1 %83, label %84, label %89

84:                                               ; preds = %81
  %85 = load i32, ptr %2, align 4, !tbaa !8
  %86 = sdiv i32 %85, 2
  %87 = load i32, ptr %2, align 4, !tbaa !8
  %88 = sdiv i32 %87, 2
  call void @_Z3dfsii(i32 noundef %86, i32 noundef %88)
  br label %90

89:                                               ; preds = %81
  call void @_Z5printv()
  br label %90

90:                                               ; preds = %89, %84
  br label %12, !llvm.loop !17

91:                                               ; preds = %22
  store i32 0, ptr %1, align 4
  store i32 1, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  %92 = load i32, ptr %1, align 4
  ret i32 %92

93:                                               ; preds = %40, %36
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  br label %94

94:                                               ; preds = %93
  %95 = load ptr, ptr %4, align 8
  %96 = load i32, ptr %5, align 4
  %97 = insertvalue { ptr, i32 } poison, ptr %95, 0
  %98 = insertvalue { ptr, i32 } %97, i32 %96, 1
  resume { ptr, i32 } %98
}

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

; Function Attrs: mustprogress uwtable
declare noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IcSaIcEESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_IcSaIcEESaIS1_EE6assignEmRKS1_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, 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) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIcSaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIcSaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE6assignEmRKS1_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

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

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIcSaIcEE9push_backEOc(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 1 dereferenceable(1)) #0 align 2

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { 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 #4 = { "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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"bool", !10, i64 0}
!13 = !{!10, !10, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}
!16 = distinct !{!16, !15}
!17 = distinct !{!17, !15}


; 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::vector<char>, std::allocator<std::vector<char>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<char>, std::allocator<std::vector<char>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<char>, std::allocator<std::vector<char>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<char>, std::allocator<std::vector<char>>>::_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<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::vector.5" = type { %"struct.std::_Vector_base.6" }
%"struct.std::_Vector_base.6" = type { %"struct.std::_Vector_base<char, std::allocator<char>>::_Vector_impl" }
%"struct.std::_Vector_base<char, std::allocator<char>>::_Vector_impl" = type { %"struct.std::_Vector_base<char, std::allocator<char>>::_Vector_impl_data" }
%"struct.std::_Vector_base<char, std::allocator<char>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.10" = type { %"struct.std::_Vector_base.11" }
%"struct.std::_Vector_base.11" = 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 }

@v = external dso_local global %"class.std::vector", align 8
@vis = external dso_local global %"class.std::vector.0", align 8
@dir = external dso_local local_unnamed_addr global i8, align 1
@lef = external dso_local local_unnamed_addr global i8, align 1
@up = external dso_local local_unnamed_addr global i8, align 1
@down = external dso_local local_unnamed_addr global i8, align 1
@_ZSt3cin = external global %"class.std::basic_istream", align 8

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5printv() local_unnamed_addr #0

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IcSaIcEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3dfsii(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca %"class.std::vector.5", align 8
  %3 = alloca %"class.std::vector.10", align 8
  %4 = alloca i8, align 1
  %5 = alloca i8, align 1
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  %6 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %7 = load ptr, ptr %6, align 8, !tbaa !5
  %8 = getelementptr i8, ptr %7, i64 -24
  %9 = load i64, ptr %8, align 8
  %10 = getelementptr inbounds i8, ptr %6, i64 %9
  %11 = call noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264) %10)
  %12 = load i32, ptr %1, align 4
  %13 = icmp ne i32 %12, 0
  %14 = select i1 %11, i1 %13, i1 false
  br i1 %14, label %.lr.ph26, label %._crit_edge27

.lr.ph26:                                         ; preds = %0, %47
  call void @_ZNSt6vectorIS_IcSaIcEESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) @v) #6
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) @vis) #6
  store i8 0, ptr @dir, align 1, !tbaa !8
  store i8 1, ptr @down, align 1, !tbaa !8
  store i8 1, ptr @up, align 1, !tbaa !8
  store i8 1, ptr @lef, align 1, !tbaa !8
  %15 = load i32, ptr %1, align 4, !tbaa !11
  %16 = sext i32 %15 to i64
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %2) #6
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %2, i8 0, i64 24, i1 false)
  call void @_ZNSt6vectorIcSaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  invoke void @_ZNSt6vectorIS_IcSaIcEESaIS1_EE6assignEmRKS1_(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %16, ptr noundef nonnull align 8 dereferenceable(24) %2)
          to label %17 unwind label %22

17:                                               ; preds = %.lr.ph26
  call void @_ZNSt6vectorIcSaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #6
  %18 = load i32, ptr %1, align 4, !tbaa !11
  %19 = sext i32 %18 to i64
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %3) #6
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %3, i8 0, i64 24, i1 false)
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  invoke void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE6assignEmRKS1_(ptr noundef nonnull align 8 dereferenceable(24) @vis, i64 noundef %19, ptr noundef nonnull align 8 dereferenceable(24) %3)
          to label %20 unwind label %24

20:                                               ; preds = %17
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #6
  %.pr = load i32, ptr %1, align 4, !tbaa !11
  %21 = icmp sgt i32 %.pr, 0
  br i1 %21, label %.lr.ph22, label %._crit_edge23.thread

._crit_edge23:                                    ; preds = %._crit_edge
  %.not = icmp eq i32 %.lcssa, 1
  br i1 %.not, label %46, label %._crit_edge23.thread

22:                                               ; preds = %.lr.ph26
  %23 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt6vectorIcSaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #6
  br label %57

24:                                               ; preds = %17
  %25 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #6
  br label %57

.lr.ph22:                                         ; preds = %20, %._crit_edge
  %indvars.iv = phi i64 [ %indvars.iv.next, %._crit_edge ], [ 0, %20 ]
  %26 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @vis, i64 noundef %indvars.iv) #6
  %27 = load i32, ptr %1, align 4, !tbaa !11
  %28 = sext i32 %27 to i64
  call void @_ZNSt6vectorIiSaIiEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24) %26, i64 noundef %28)
  %29 = load i32, ptr %1, align 4, !tbaa !11
  %30 = icmp sgt i32 %29, 0
  br i1 %30, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %41, %.lr.ph22
  %.lcssa = phi i32 [ %29, %.lr.ph22 ], [ %43, %41 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %31 = sext i32 %.lcssa to i64
  %32 = icmp slt i64 %indvars.iv.next, %31
  br i1 %32, label %.lr.ph22, label %._crit_edge23, !llvm.loop !13

.lr.ph:                                           ; preds = %.lr.ph22, %41
  %33 = phi i32 [ %43, %41 ], [ %29, %.lr.ph22 ]
  %.019 = phi i32 [ %42, %41 ], [ 0, %.lr.ph22 ]
  %34 = sdiv i32 %33, 2
  %35 = zext i32 %34 to i64
  %36 = icmp eq i64 %indvars.iv, %35
  %37 = icmp eq i32 %.019, %34
  %or.cond = and i1 %36, %37
  %38 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IcSaIcEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %indvars.iv) #6
  br i1 %or.cond, label %39, label %40

39:                                               ; preds = %.lr.ph
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %4) #6
  store i8 88, ptr %4, align 1, !tbaa !15
  call void @_ZNSt6vectorIcSaIcEE9push_backEOc(ptr noundef nonnull align 8 dereferenceable(24) %38, ptr noundef nonnull align 1 dereferenceable(1) %4)
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #6
  br label %41

40:                                               ; preds = %.lr.ph
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %5) #6
  store i8 79, ptr %5, align 1, !tbaa !15
  call void @_ZNSt6vectorIcSaIcEE9push_backEOc(ptr noundef nonnull align 8 dereferenceable(24) %38, ptr noundef nonnull align 1 dereferenceable(1) %5)
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #6
  br label %41

41:                                               ; preds = %39, %40
  %42 = add nuw nsw i32 %.019, 1
  %43 = load i32, ptr %1, align 4, !tbaa !11
  %44 = icmp slt i32 %42, %43
  br i1 %44, label %.lr.ph, label %._crit_edge, !llvm.loop !16

._crit_edge23.thread:                             ; preds = %20, %._crit_edge23
  %.lcssa1832 = phi i32 [ %.lcssa, %._crit_edge23 ], [ %.pr, %20 ]
  %45 = sdiv i32 %.lcssa1832, 2
  call void @_Z3dfsii(i32 noundef %45, i32 noundef %45)
  br label %47

46:                                               ; preds = %._crit_edge23
  call void @_Z5printv()
  br label %47

47:                                               ; preds = %46, %._crit_edge23.thread
  %48 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %49 = load ptr, ptr %48, align 8, !tbaa !5
  %50 = getelementptr i8, ptr %49, i64 -24
  %51 = load i64, ptr %50, align 8
  %52 = getelementptr inbounds i8, ptr %48, i64 %51
  %53 = call noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264) %52)
  %54 = load i32, ptr %1, align 4
  %55 = icmp ne i32 %54, 0
  %56 = select i1 %53, i1 %55, i1 false
  br i1 %56, label %.lr.ph26, label %._crit_edge27, !llvm.loop !17

._crit_edge27:                                    ; preds = %47, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  ret i32 0

57:                                               ; preds = %24, %22
  %.pn = phi { ptr, i32 } [ %25, %24 ], [ %23, %22 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  resume { ptr, i32 } %.pn
}

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

; Function Attrs: mustprogress uwtable
declare noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IcSaIcEESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_IcSaIcEESaIS1_EE6assignEmRKS1_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, 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) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIcSaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIcSaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE6assignEmRKS1_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

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

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIcSaIcEE9push_backEOc(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #0 align 2

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { 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 #4 = { "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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"bool", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !10, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = !{!10, !10, i64 0}
!16 = distinct !{!16, !14}
!17 = distinct !{!17, !14}


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