; LLVM IR from DionysiosB/CodeForces :: 0500-0599 (513B1-Permutations)

; 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::_Bvector_base" }
%"struct.std::_Bvector_base" = type { %"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl" }
%"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl" = type { %"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl_data" }
%"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl_data" = type { %"struct.std::_Bit_iterator", %"struct.std::_Bit_iterator", ptr }
%"struct.std::_Bit_iterator" = type { %"struct.std::_Bit_iterator_base.base", [4 x i8] }
%"struct.std::_Bit_iterator_base.base" = type <{ ptr, i32 }>
%"class.std::allocator.0" = type { i8 }
%"class.std::vector.3" = 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 }
%"class.std::allocator.4" = type { i8 }
%"struct.std::_Bit_reference" = type { ptr, i64 }

@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = 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.0", align 1
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca %"class.std::vector.3", align 8
  %9 = alloca %"class.std::allocator.4", align 1
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca %"struct.std::_Bit_reference", align 8
  %14 = alloca i32, align 4
  %15 = alloca %"struct.std::_Bit_reference", align 8
  %16 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #5
  %17 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2, ptr noundef %3)
  call void @llvm.lifetime.start.p0(i64 40, ptr %4) #5
  %18 = load i64, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %5) #5
  call void @_ZNSaIbEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #5
  invoke void @_ZNSt6vectorIbSaIbEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(40) %4, i64 noundef %18, ptr noundef nonnull align 1 dereferenceable(1) %5)
          to label %19 unwind label %34

19:                                               ; preds = %0
  call void @_ZNSt15__new_allocatorIbED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #5
  call void @llvm.lifetime.start.p0(i64 24, ptr %8) #5
  %20 = load i64, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %9) #5
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %9) #5
  invoke void @_ZNSt6vectorIiSaIiEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %8, i64 noundef %20, ptr noundef nonnull align 1 dereferenceable(1) %9)
          to label %21 unwind label %38

21:                                               ; preds = %19
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %9) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %9) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #5
  store i32 0, ptr %10, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #5
  %22 = load i64, ptr %2, align 8, !tbaa !5
  %23 = sub nsw i64 %22, 1
  %24 = trunc i64 %23 to i32
  store i32 %24, ptr %11, align 4, !tbaa !9
  %25 = load i64, ptr %3, align 8, !tbaa !5
  %26 = add nsw i64 %25, -1
  store i64 %26, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #5
  %27 = load i64, ptr %2, align 8, !tbaa !5
  %28 = sub nsw i64 %27, 2
  %29 = trunc i64 %28 to i32
  store i32 %29, ptr %12, align 4, !tbaa !9
  br label %30

30:                                               ; preds = %57, %21
  %31 = load i32, ptr %12, align 4, !tbaa !9
  %32 = icmp sge i32 %31, 0
  br i1 %32, label %42, label %33

33:                                               ; preds = %30
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #5
  br label %64

34:                                               ; preds = %0
  %35 = landingpad { ptr, i32 }
          cleanup
  %36 = extractvalue { ptr, i32 } %35, 0
  store ptr %36, ptr %6, align 8
  %37 = extractvalue { ptr, i32 } %35, 1
  store i32 %37, ptr %7, align 4
  call void @_ZNSt15__new_allocatorIbED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #5
  br label %134

38:                                               ; preds = %19
  %39 = landingpad { ptr, i32 }
          cleanup
  %40 = extractvalue { ptr, i32 } %39, 0
  store ptr %40, ptr %6, align 8
  %41 = extractvalue { ptr, i32 } %39, 1
  store i32 %41, ptr %7, align 4
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %9) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %9) #5
  br label %133

42:                                               ; preds = %30
  %43 = load i64, ptr %3, align 8, !tbaa !5
  %44 = srem i64 %43, 2
  %45 = icmp ne i64 %44, 0
  call void @llvm.lifetime.start.p0(i64 16, ptr %13) #5
  %46 = load i32, ptr %12, align 4, !tbaa !9
  %47 = sext i32 %46 to i64
  %48 = invoke { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40) %4, i64 noundef %47)
          to label %49 unwind label %60

49:                                               ; preds = %42
  %50 = getelementptr inbounds { ptr, i64 }, ptr %13, i32 0, i32 0
  %51 = extractvalue { ptr, i64 } %48, 0
  store ptr %51, ptr %50, align 8
  %52 = getelementptr inbounds { ptr, i64 }, ptr %13, i32 0, i32 1
  %53 = extractvalue { ptr, i64 } %48, 1
  store i64 %53, ptr %52, align 8
  %54 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt14_Bit_referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16) %13, i1 noundef zeroext %45) #5
  call void @llvm.lifetime.end.p0(i64 16, ptr %13) #5
  %55 = load i64, ptr %3, align 8, !tbaa !5
  %56 = sdiv i64 %55, 2
  store i64 %56, ptr %3, align 8, !tbaa !5
  br label %57

57:                                               ; preds = %49
  %58 = load i32, ptr %12, align 4, !tbaa !9
  %59 = add nsw i32 %58, -1
  store i32 %59, ptr %12, align 4, !tbaa !9
  br label %30, !llvm.loop !11

60:                                               ; preds = %42
  %61 = landingpad { ptr, i32 }
          cleanup
  %62 = extractvalue { ptr, i32 } %61, 0
  store ptr %62, ptr %6, align 8
  %63 = extractvalue { ptr, i32 } %61, 1
  store i32 %63, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 16, ptr %13) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #5
  br label %132

64:                                               ; preds = %33
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #5
  store i32 0, ptr %14, align 4, !tbaa !9
  br label %65

65:                                               ; preds = %100, %64
  %66 = load i32, ptr %14, align 4, !tbaa !9
  %67 = sext i32 %66 to i64
  %68 = load i64, ptr %2, align 8, !tbaa !5
  %69 = icmp slt i64 %67, %68
  br i1 %69, label %71, label %70

70:                                               ; preds = %65
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #5
  br label %103

71:                                               ; preds = %65
  call void @llvm.lifetime.start.p0(i64 16, ptr %15) #5
  %72 = load i32, ptr %14, align 4, !tbaa !9
  %73 = sext i32 %72 to i64
  %74 = invoke { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40) %4, i64 noundef %73)
          to label %75 unwind label %88

75:                                               ; preds = %71
  %76 = getelementptr inbounds { ptr, i64 }, ptr %15, i32 0, i32 0
  %77 = extractvalue { ptr, i64 } %74, 0
  store ptr %77, ptr %76, align 8
  %78 = getelementptr inbounds { ptr, i64 }, ptr %15, i32 0, i32 1
  %79 = extractvalue { ptr, i64 } %74, 1
  store i64 %79, ptr %78, align 8
  %80 = call noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16) %15) #5
  call void @llvm.lifetime.end.p0(i64 16, ptr %15) #5
  br i1 %80, label %81, label %92

81:                                               ; preds = %75
  %82 = load i32, ptr %14, align 4, !tbaa !9
  %83 = add nsw i32 %82, 1
  %84 = load i32, ptr %11, align 4, !tbaa !9
  %85 = add nsw i32 %84, -1
  store i32 %85, ptr %11, align 4, !tbaa !9
  %86 = sext i32 %84 to i64
  %87 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %8, i64 noundef %86) #5
  store i32 %83, ptr %87, align 4, !tbaa !9
  br label %99

88:                                               ; preds = %71
  %89 = landingpad { ptr, i32 }
          cleanup
  %90 = extractvalue { ptr, i32 } %89, 0
  store ptr %90, ptr %6, align 8
  %91 = extractvalue { ptr, i32 } %89, 1
  store i32 %91, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 16, ptr %15) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #5
  br label %132

92:                                               ; preds = %75
  %93 = load i32, ptr %14, align 4, !tbaa !9
  %94 = add nsw i32 %93, 1
  %95 = load i32, ptr %10, align 4, !tbaa !9
  %96 = add nsw i32 %95, 1
  store i32 %96, ptr %10, align 4, !tbaa !9
  %97 = sext i32 %95 to i64
  %98 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %8, i64 noundef %97) #5
  store i32 %94, ptr %98, align 4, !tbaa !9
  br label %99

99:                                               ; preds = %92, %81
  br label %100

100:                                              ; preds = %99
  %101 = load i32, ptr %14, align 4, !tbaa !9
  %102 = add nsw i32 %101, 1
  store i32 %102, ptr %14, align 4, !tbaa !9
  br label %65, !llvm.loop !13

103:                                              ; preds = %70
  call void @llvm.lifetime.start.p0(i64 4, ptr %16) #5
  store i32 0, ptr %16, align 4, !tbaa !9
  br label %104

104:                                              ; preds = %117, %103
  %105 = load i32, ptr %16, align 4, !tbaa !9
  %106 = sext i32 %105 to i64
  %107 = load i64, ptr %2, align 8, !tbaa !5
  %108 = icmp slt i64 %106, %107
  br i1 %108, label %110, label %109

109:                                              ; preds = %104
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #5
  br label %124

110:                                              ; preds = %104
  %111 = load i32, ptr %16, align 4, !tbaa !9
  %112 = sext i32 %111 to i64
  %113 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %8, i64 noundef %112) #5
  %114 = load i32, ptr %113, align 4, !tbaa !9
  %115 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %114)
          to label %116 unwind label %120

116:                                              ; preds = %110
  br label %117

117:                                              ; preds = %116
  %118 = load i32, ptr %16, align 4, !tbaa !9
  %119 = add nsw i32 %118, 1
  store i32 %119, ptr %16, align 4, !tbaa !9
  br label %104, !llvm.loop !14

120:                                              ; preds = %110
  %121 = landingpad { ptr, i32 }
          cleanup
  %122 = extractvalue { ptr, i32 } %121, 0
  store ptr %122, ptr %6, align 8
  %123 = extractvalue { ptr, i32 } %121, 1
  store i32 %123, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #5
  br label %132

124:                                              ; preds = %109
  %125 = invoke i32 @puts(ptr noundef @.str.2)
          to label %126 unwind label %128

126:                                              ; preds = %124
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #5
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %8) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr %8) #5
  call void @_ZNSt13_Bvector_baseISaIbEED2Ev(ptr noundef nonnull align 8 dereferenceable(40) %4) #5
  call void @llvm.lifetime.end.p0(i64 40, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #5
  %127 = load i32, ptr %1, align 4
  ret i32 %127

128:                                              ; preds = %124
  %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
  br label %132

132:                                              ; preds = %128, %120, %88, %60
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #5
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %8) #5
  br label %133

133:                                              ; preds = %132, %38
  call void @llvm.lifetime.end.p0(i64 24, ptr %8) #5
  call void @_ZNSt13_Bvector_baseISaIbEED2Ev(ptr noundef nonnull align 8 dereferenceable(40) %4) #5
  br label %134

134:                                              ; preds = %133, %34
  call void @llvm.lifetime.end.p0(i64 40, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #5
  br label %135

135:                                              ; preds = %134
  %136 = load ptr, ptr %6, align 8
  %137 = load i32, ptr %7, align 4
  %138 = insertvalue { ptr, i32 } poison, ptr %136, 0
  %139 = insertvalue { ptr, i32 } %138, i32 %137, 1
  resume { ptr, i32 } %139
}

; 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 @_ZNSaIbEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIbSaIbEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(40), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #4 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIbED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 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 nounwind uwtable
declare dso_local void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40), i64 noundef) #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt14_Bit_referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16), i1 noundef zeroext) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #3 align 2

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

declare i32 @puts(ptr noundef) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt13_Bvector_baseISaIbEED2Ev(ptr noundef nonnull align 8 dereferenceable(40)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIiED2Ev(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 = { nounwind }

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

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !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::_Bvector_base" }
%"struct.std::_Bvector_base" = type { %"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl" }
%"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl" = type { %"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl_data" }
%"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl_data" = type { %"struct.std::_Bit_iterator", %"struct.std::_Bit_iterator", ptr }
%"struct.std::_Bit_iterator" = type { %"struct.std::_Bit_iterator_base.base", [4 x i8] }
%"struct.std::_Bit_iterator_base.base" = type <{ ptr, i32 }>
%"class.std::allocator.0" = type { i8 }
%"class.std::vector.3" = 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 }
%"class.std::allocator.4" = type { i8 }
%"struct.std::_Bit_reference" = type { ptr, i64 }

@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = 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.0", align 1
  %5 = alloca %"class.std::vector.3", align 8
  %6 = alloca %"class.std::allocator.4", align 1
  %7 = alloca %"struct.std::_Bit_reference", align 8
  %8 = alloca %"struct.std::_Bit_reference", align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #5
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2)
  call void @llvm.lifetime.start.p0(i64 40, ptr nonnull %3) #5
  %10 = load i64, ptr %1, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %4) #5
  call void @_ZNSaIbEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #5
  invoke void @_ZNSt6vectorIbSaIbEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(40) %3, i64 noundef %10, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %11 unwind label %26

11:                                               ; preds = %0
  call void @_ZNSt15__new_allocatorIbED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #5
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %5) #5
  %12 = load i64, ptr %1, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %6) #5
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #5
  invoke void @_ZNSt6vectorIiSaIiEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %12, ptr noundef nonnull align 1 dereferenceable(1) %6)
          to label %13 unwind label %28

13:                                               ; preds = %11
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %6) #5
  %14 = load i64, ptr %1, align 8, !tbaa !5
  %15 = trunc i64 %14 to i32
  %16 = add i32 %15, -1
  %17 = load i64, ptr %2, align 8, !tbaa !5
  %18 = add nsw i64 %17, -1
  store i64 %18, ptr %2, align 8, !tbaa !5
  %19 = add i32 %15, -2
  %20 = icmp sgt i32 %19, -1
  br i1 %20, label %.lr.ph, label %.preheader30

.lr.ph:                                           ; preds = %13
  %21 = getelementptr inbounds i8, ptr %7, i64 8
  %22 = zext nneg i32 %19 to i64
  br label %30

.preheader30.loopexit:                            ; preds = %33
  %.pre = load i64, ptr %1, align 8, !tbaa !5
  br label %.preheader30

.preheader30:                                     ; preds = %.preheader30.loopexit, %13
  %23 = phi i64 [ %.pre, %.preheader30.loopexit ], [ %14, %13 ]
  %24 = icmp sgt i64 %23, 0
  br i1 %24, label %.lr.ph35, label %._crit_edge

.lr.ph35:                                         ; preds = %.preheader30
  %25 = getelementptr inbounds i8, ptr %8, i64 8
  br label %45

26:                                               ; preds = %0
  %27 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIbED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #5
  br label %69

28:                                               ; preds = %11
  %29 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %6) #5
  br label %68

30:                                               ; preds = %.lr.ph, %33
  %31 = phi i64 [ %18, %.lr.ph ], [ %40, %33 ]
  %indvars.iv = phi i64 [ %22, %.lr.ph ], [ %indvars.iv.next, %33 ]
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %7) #5
  %32 = invoke { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40) %3, i64 noundef %indvars.iv)
          to label %33 unwind label %42

33:                                               ; preds = %30
  %34 = and i64 %31, 1
  %35 = icmp ne i64 %34, 0
  %36 = extractvalue { ptr, i64 } %32, 0
  store ptr %36, ptr %7, align 8
  %37 = extractvalue { ptr, i64 } %32, 1
  store i64 %37, ptr %21, align 8
  %38 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt14_Bit_referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16) %7, i1 noundef zeroext %35) #5
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %7) #5
  %39 = load i64, ptr %2, align 8, !tbaa !5
  %40 = sdiv i64 %39, 2
  store i64 %40, ptr %2, align 8, !tbaa !5
  %indvars.iv.next = add nsw i64 %indvars.iv, -1
  %41 = icmp sgt i64 %indvars.iv, 0
  br i1 %41, label %30, label %.preheader30.loopexit, !llvm.loop !9

42:                                               ; preds = %30
  %43 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %7) #5
  br label %67

.preheader:                                       ; preds = %47
  %44 = icmp sgt i64 %57, 0
  br i1 %44, label %.lr.ph37, label %._crit_edge

45:                                               ; preds = %.lr.ph35, %47
  %indvars.iv39 = phi i64 [ 0, %.lr.ph35 ], [ %51, %47 ]
  %.01733 = phi i32 [ %16, %.lr.ph35 ], [ %.1, %47 ]
  %.01832 = phi i32 [ 0, %.lr.ph35 ], [ %.119, %47 ]
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %8) #5
  %46 = invoke { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40) %3, i64 noundef %indvars.iv39)
          to label %47 unwind label %59

47:                                               ; preds = %45
  %48 = extractvalue { ptr, i64 } %46, 0
  store ptr %48, ptr %8, align 8
  %49 = extractvalue { ptr, i64 } %46, 1
  store i64 %49, ptr %25, align 8
  %50 = call noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16) %8) #5
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %8) #5
  %51 = add nuw nsw i64 %indvars.iv39, 1
  %52 = trunc nuw i64 %51 to i32
  %.01733.sink = select i1 %50, i32 %.01733, i32 %.01832
  %not. = xor i1 %50, true
  %53 = zext i1 %not. to i32
  %.119 = add nuw nsw i32 %.01832, %53
  %54 = sext i1 %50 to i32
  %.1 = add nsw i32 %.01733, %54
  %55 = sext i32 %.01733.sink to i64
  %56 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %55) #5
  store i32 %52, ptr %56, align 4, !tbaa !11
  %57 = load i64, ptr %1, align 8, !tbaa !5
  %58 = icmp sgt i64 %57, %51
  br i1 %58, label %45, label %.preheader, !llvm.loop !13

59:                                               ; preds = %45
  %60 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %8) #5
  br label %67

._crit_edge:                                      ; preds = %.lr.ph37, %.preheader30, %.preheader
  %61 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.2)
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %5) #5
  call void @_ZNSt13_Bvector_baseISaIbEED2Ev(ptr noundef nonnull align 8 dereferenceable(40) %3) #5
  call void @llvm.lifetime.end.p0(i64 40, ptr nonnull %3) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #5
  ret i32 0

.lr.ph37:                                         ; preds = %.preheader, %.lr.ph37
  %indvars.iv42 = phi i64 [ %indvars.iv.next43, %.lr.ph37 ], [ 0, %.preheader ]
  %62 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %indvars.iv42) #5
  %63 = load i32, ptr %62, align 4, !tbaa !11
  %64 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %63)
  %indvars.iv.next43 = add nuw nsw i64 %indvars.iv42, 1
  %65 = load i64, ptr %1, align 8, !tbaa !5
  %66 = icmp sgt i64 %65, %indvars.iv.next43
  br i1 %66, label %.lr.ph37, label %._crit_edge, !llvm.loop !14

67:                                               ; preds = %59, %42
  %.pn = phi { ptr, i32 } [ %43, %42 ], [ %60, %59 ]
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #5
  br label %68

68:                                               ; preds = %67, %28
  %.pn.pn = phi { ptr, i32 } [ %.pn, %67 ], [ %29, %28 ]
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %5) #5
  call void @_ZNSt13_Bvector_baseISaIbEED2Ev(ptr noundef nonnull align 8 dereferenceable(40) %3) #5
  br label %69

69:                                               ; preds = %68, %26
  %.pn.pn.pn = phi { ptr, i32 } [ %.pn.pn, %68 ], [ %27, %26 ]
  call void @llvm.lifetime.end.p0(i64 40, ptr nonnull %3) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #5
  resume { ptr, i32 } %.pn.pn.pn
}

; 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 @_ZNSaIbEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIbSaIbEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(40), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #4 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIbED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 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 nounwind uwtable
declare dso_local void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40), i64 noundef) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt14_Bit_referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16), i1 noundef zeroext) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #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 @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt13_Bvector_baseISaIbEED2Ev(ptr noundef nonnull align 8 dereferenceable(40)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIiED2Ev(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 = { nounwind }

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

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


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