; LLVM IR from eyangch/competitive-programming :: Codeforces/1523 (c)

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

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

@T = external dso_local global i32, align 4
@N = external dso_local global i32, align 4
@a = external dso_local global [1000 x i32], align 16
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca %"class.std::vector", align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %10 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %11 = getelementptr i8, ptr %10, i64 -24
  %12 = load i64, ptr %11, align 8
  %13 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %12
  %14 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %13, ptr noundef null)
  %15 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %16 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @T)
  br label %17

17:                                               ; preds = %107, %0
  %18 = load i32, ptr @T, align 4, !tbaa !8
  %19 = add nsw i32 %18, -1
  store i32 %19, ptr @T, align 4, !tbaa !8
  %20 = icmp ne i32 %18, 0
  br i1 %20, label %21, label %108

21:                                               ; preds = %17
  %22 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @N)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  store i32 0, ptr %2, align 4, !tbaa !8
  br label %23

23:                                               ; preds = %33, %21
  %24 = load i32, ptr %2, align 4, !tbaa !8
  %25 = load i32, ptr @N, align 4, !tbaa !8
  %26 = icmp slt i32 %24, %25
  br i1 %26, label %28, label %27

27:                                               ; preds = %23
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  br label %36

28:                                               ; preds = %23
  %29 = load i32, ptr %2, align 4, !tbaa !8
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds [1000 x i32], ptr @a, i64 0, i64 %30
  %32 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %31)
  br label %33

33:                                               ; preds = %28
  %34 = load i32, ptr %2, align 4, !tbaa !8
  %35 = add nsw i32 %34, 1
  store i32 %35, ptr %2, align 4, !tbaa !8
  br label %23, !llvm.loop !11

36:                                               ; preds = %27
  call void @llvm.lifetime.start.p0(i64 24, ptr %3) #6
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  store i32 0, ptr %4, align 4, !tbaa !8
  br label %37

37:                                               ; preds = %99, %36
  %38 = load i32, ptr %4, align 4, !tbaa !8
  %39 = load i32, ptr @N, align 4, !tbaa !8
  %40 = icmp slt i32 %38, %39
  br i1 %40, label %42, label %41

41:                                               ; preds = %37
  store i32 7, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  br label %107

42:                                               ; preds = %37
  %43 = load i32, ptr %4, align 4, !tbaa !8
  %44 = sext i32 %43 to i64
  %45 = getelementptr inbounds [1000 x i32], ptr @a, i64 0, i64 %44
  %46 = load i32, ptr %45, align 4, !tbaa !8
  %47 = icmp eq i32 %46, 1
  br i1 %47, label %48, label %54

48:                                               ; preds = %42
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #6
  store i32 1, ptr %6, align 4, !tbaa !8
  invoke void @_ZNSt6vectorIiSaIiEE9push_backEOi(ptr noundef nonnull align 8 dereferenceable(24) %3, ptr noundef nonnull align 4 dereferenceable(4) %6)
          to label %49 unwind label %50

49:                                               ; preds = %48
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #6
  br label %69

50:                                               ; preds = %48
  %51 = landingpad { ptr, i32 }
          cleanup
  %52 = extractvalue { ptr, i32 } %51, 0
  store ptr %52, ptr %7, align 8
  %53 = extractvalue { ptr, i32 } %51, 1
  store i32 %53, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #6
  br label %106

54:                                               ; preds = %42
  br label %55

55:                                               ; preds = %64, %54
  %56 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEE4backEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  %57 = load i32, ptr %56, align 4, !tbaa !8
  %58 = load i32, ptr %4, align 4, !tbaa !8
  %59 = sext i32 %58 to i64
  %60 = getelementptr inbounds [1000 x i32], ptr @a, i64 0, i64 %59
  %61 = load i32, ptr %60, align 4, !tbaa !8
  %62 = sub nsw i32 %61, 1
  %63 = icmp ne i32 %57, %62
  br i1 %63, label %64, label %65

64:                                               ; preds = %55
  call void @_ZNSt6vectorIiSaIiEE8pop_backEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  br label %55, !llvm.loop !13

65:                                               ; preds = %55
  %66 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEE4backEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  %67 = load i32, ptr %66, align 4, !tbaa !8
  %68 = add nsw i32 %67, 1
  store i32 %68, ptr %66, align 4, !tbaa !8
  br label %69

69:                                               ; preds = %65, %49
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #6
  store i32 0, ptr %9, align 4, !tbaa !8
  br label %70

70:                                               ; preds = %93, %69
  %71 = load i32, ptr %9, align 4, !tbaa !8
  %72 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  %73 = trunc i64 %72 to i32
  %74 = icmp slt i32 %71, %73
  br i1 %74, label %76, label %75

75:                                               ; preds = %70
  store i32 12, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #6
  br label %96

76:                                               ; preds = %70
  %77 = load i32, ptr %9, align 4, !tbaa !8
  %78 = icmp ne i32 %77, 0
  br i1 %78, label %79, label %86

79:                                               ; preds = %76
  %80 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i8 noundef signext 46)
          to label %81 unwind label %82

81:                                               ; preds = %79
  br label %86

82:                                               ; preds = %86, %79
  %83 = landingpad { ptr, i32 }
          cleanup
  %84 = extractvalue { ptr, i32 } %83, 0
  store ptr %84, ptr %7, align 8
  %85 = extractvalue { ptr, i32 } %83, 1
  store i32 %85, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #6
  br label %106

86:                                               ; preds = %81, %76
  %87 = load i32, ptr %9, align 4, !tbaa !8
  %88 = sext i32 %87 to i64
  %89 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %88) #6
  %90 = load i32, ptr %89, align 4, !tbaa !8
  %91 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %90)
          to label %92 unwind label %82

92:                                               ; preds = %86
  br label %93

93:                                               ; preds = %92
  %94 = load i32, ptr %9, align 4, !tbaa !8
  %95 = add nsw i32 %94, 1
  store i32 %95, ptr %9, align 4, !tbaa !8
  br label %70, !llvm.loop !14

96:                                               ; preds = %75
  %97 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str)
          to label %98 unwind label %102

98:                                               ; preds = %96
  br label %99

99:                                               ; preds = %98
  %100 = load i32, ptr %4, align 4, !tbaa !8
  %101 = add nsw i32 %100, 1
  store i32 %101, ptr %4, align 4, !tbaa !8
  br label %37, !llvm.loop !15

102:                                              ; preds = %96
  %103 = landingpad { ptr, i32 }
          cleanup
  %104 = extractvalue { ptr, i32 } %103, 0
  store ptr %104, ptr %7, align 8
  %105 = extractvalue { ptr, i32 } %103, 1
  store i32 %105, ptr %8, align 4
  br label %106

106:                                              ; preds = %102, %82, %50
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %3) #6
  br label %110

107:                                              ; preds = %41
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %3) #6
  br label %17, !llvm.loop !16

108:                                              ; preds = %17
  %109 = load i32, ptr %1, align 4
  ret i32 %109

110:                                              ; preds = %106
  %111 = load ptr, ptr %7, align 8
  %112 = load i32, ptr %8, align 4
  %113 = insertvalue { ptr, i32 } poison, ptr %111, 0
  %114 = insertvalue { ptr, i32 } %113, i32 %112, 1
  resume { ptr, i32 } %114
}

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) #1 align 2

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) #2

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

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backEOi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) #4 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEE4backEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE8pop_backEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8), i8 noundef signext) #5

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 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 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 #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"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 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!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::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@T = external dso_local global i32, align 4
@N = external dso_local global i32, align 4
@a = external dso_local global [1000 x i32], align 16
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca %"class.std::vector", align 8
  %2 = alloca i32, align 4
  %3 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %4 = getelementptr i8, ptr %3, i64 -24
  %5 = load i64, ptr %4, align 8
  %6 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %5
  %7 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %6, ptr noundef null)
  %8 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %9 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @T)
  %10 = load i32, ptr @T, align 4, !tbaa !8
  %11 = add nsw i32 %10, -1
  store i32 %11, ptr @T, align 4, !tbaa !8
  %.not32 = icmp eq i32 %10, 0
  br i1 %.not32, label %._crit_edge35, label %.lr.ph34

.lr.ph34:                                         ; preds = %0, %._crit_edge31
  %12 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @N)
  %13 = load i32, ptr @N, align 4, !tbaa !8
  %14 = icmp sgt i32 %13, 0
  br i1 %14, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.lr.ph34
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %1) #6
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %1) #6
  %15 = load i32, ptr @N, align 4, !tbaa !8
  %16 = icmp sgt i32 %15, 0
  br i1 %16, label %.lr.ph30, label %._crit_edge31

.lr.ph:                                           ; preds = %.lr.ph34, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %.lr.ph34 ]
  %17 = getelementptr inbounds [1000 x i32], ptr @a, i64 0, i64 %indvars.iv
  %18 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %17)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %19 = load i32, ptr @N, align 4, !tbaa !8
  %20 = sext i32 %19 to i64
  %21 = icmp slt i64 %indvars.iv.next, %20
  br i1 %21, label %.lr.ph, label %._crit_edge, !llvm.loop !11

._crit_edge31:                                    ; preds = %63, %._crit_edge
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %1) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %1) #6
  %22 = load i32, ptr @T, align 4, !tbaa !8
  %23 = add nsw i32 %22, -1
  store i32 %23, ptr @T, align 4, !tbaa !8
  %.not = icmp eq i32 %22, 0
  br i1 %.not, label %._crit_edge35, label %.lr.ph34, !llvm.loop !13

.lr.ph30:                                         ; preds = %._crit_edge, %63
  %indvars.iv41 = phi i64 [ %indvars.iv.next42, %63 ], [ 0, %._crit_edge ]
  %24 = getelementptr inbounds [1000 x i32], ptr @a, i64 0, i64 %indvars.iv41
  %25 = load i32, ptr %24, align 4, !tbaa !8
  %26 = icmp eq i32 %25, 1
  br i1 %26, label %31, label %.preheader

.preheader:                                       ; preds = %.lr.ph30
  %27 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEE4backEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #6
  %28 = load i32, ptr %27, align 4, !tbaa !8
  %29 = load i32, ptr %24, align 4, !tbaa !8
  %30 = add nsw i32 %29, -1
  %.not1721 = icmp eq i32 %28, %30
  br i1 %.not1721, label %._crit_edge23, label %.lr.ph22

31:                                               ; preds = %.lr.ph30
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #6
  store i32 1, ptr %2, align 4, !tbaa !8
  invoke void @_ZNSt6vectorIiSaIiEE9push_backEOi(ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 4 dereferenceable(4) %2)
          to label %32 unwind label %33

32:                                               ; preds = %31
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  br label %42

33:                                               ; preds = %31
  %34 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  br label %69

.lr.ph22:                                         ; preds = %.preheader, %.lr.ph22
  call void @_ZNSt6vectorIiSaIiEE8pop_backEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #6
  %35 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEE4backEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #6
  %36 = load i32, ptr %35, align 4, !tbaa !8
  %37 = load i32, ptr %24, align 4, !tbaa !8
  %38 = add nsw i32 %37, -1
  %.not17 = icmp eq i32 %36, %38
  br i1 %.not17, label %._crit_edge23, label %.lr.ph22, !llvm.loop !14

._crit_edge23:                                    ; preds = %.lr.ph22, %.preheader
  %39 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEE4backEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #6
  %40 = load i32, ptr %39, align 4, !tbaa !8
  %41 = add nsw i32 %40, 1
  store i32 %41, ptr %39, align 4, !tbaa !8
  br label %42

42:                                               ; preds = %._crit_edge23, %32
  %43 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #6
  %44 = trunc i64 %43 to i32
  %45 = icmp sgt i32 %44, 0
  br i1 %45, label %.lr.ph26.preheader, label %._crit_edge27

.lr.ph26.preheader:                               ; preds = %42
  %46 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef 0) #6
  %47 = load i32, ptr %46, align 4, !tbaa !8
  %48 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %47)
          to label %49 unwind label %.loopexit.split-lp

49:                                               ; preds = %.lr.ph26.preheader
  %50 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #6
  %51 = trunc i64 %50 to i32
  %52 = icmp sgt i32 %51, 1
  br i1 %52, label %.lr.ph26.peel.next, label %._crit_edge27

._crit_edge27:                                    ; preds = %59, %49, %42
  %53 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str)
          to label %63 unwind label %67

.lr.ph26.peel.next:                               ; preds = %49, %59
  %indvars.iv37 = phi i64 [ %indvars.iv.next38, %59 ], [ 1, %49 ]
  %54 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i8 noundef signext 46)
          to label %55 unwind label %.loopexit

.loopexit:                                        ; preds = %.lr.ph26.peel.next, %55
  %lpad.loopexit = landingpad { ptr, i32 }
          cleanup
  br label %69

.loopexit.split-lp:                               ; preds = %.lr.ph26.preheader
  %lpad.loopexit.split-lp = landingpad { ptr, i32 }
          cleanup
  br label %69

55:                                               ; preds = %.lr.ph26.peel.next
  %56 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %indvars.iv37) #6
  %57 = load i32, ptr %56, align 4, !tbaa !8
  %58 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %57)
          to label %59 unwind label %.loopexit

59:                                               ; preds = %55
  %indvars.iv.next38 = add nuw nsw i64 %indvars.iv37, 1
  %60 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #6
  %sext = shl i64 %60, 32
  %61 = ashr exact i64 %sext, 32
  %62 = icmp slt i64 %indvars.iv.next38, %61
  br i1 %62, label %.lr.ph26.peel.next, label %._crit_edge27, !llvm.loop !15

63:                                               ; preds = %._crit_edge27
  %indvars.iv.next42 = add nuw nsw i64 %indvars.iv41, 1
  %64 = load i32, ptr @N, align 4, !tbaa !8
  %65 = sext i32 %64 to i64
  %66 = icmp slt i64 %indvars.iv.next42, %65
  br i1 %66, label %.lr.ph30, label %._crit_edge31, !llvm.loop !17

67:                                               ; preds = %._crit_edge27
  %68 = landingpad { ptr, i32 }
          cleanup
  br label %69

69:                                               ; preds = %.loopexit, %.loopexit.split-lp, %67, %33
  %.pn = phi { ptr, i32 } [ %68, %67 ], [ %34, %33 ], [ %lpad.loopexit, %.loopexit ], [ %lpad.loopexit.split-lp, %.loopexit.split-lp ]
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %1) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %1) #6
  resume { ptr, i32 } %.pn

._crit_edge35:                                    ; preds = %._crit_edge31, %0
  ret i32 0
}

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) local_unnamed_addr #1 align 2

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) local_unnamed_addr #2

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

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backEOi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #4 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEE4backEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE8pop_backEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8), i8 noundef signext) local_unnamed_addr #5

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 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 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 #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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"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 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !12}
!15 = distinct !{!15, !12, !16}
!16 = !{!"llvm.loop.peeled.count", i32 1}
!17 = distinct !{!17, !12}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopFullUnrollPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass