; LLVM IR from bqi343/cp-notebook :: Contests/USACO Solutions/2019-20/Feb/Bronze (breedflip)

; 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::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }
%"class.std::allocator" = type { i8 }
%"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.3" = type { i8 }
%"struct.std::_Bit_reference" = type { ptr, i64 }

@N = external dso_local global i32, align 4
@.str.10 = external hidden unnamed_addr constant [1 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN2io5setIOENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef) #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 %"class.std::__cxx11::basic_string", align 8
  %3 = alloca %"class.std::allocator", align 1
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca %"class.std::__cxx11::basic_string", align 8
  %7 = alloca %"class.std::__cxx11::basic_string", align 8
  %8 = alloca %"class.std::vector", align 8
  %9 = alloca %"class.std::allocator.3", align 1
  %10 = alloca i32, align 4
  %11 = alloca %"struct.std::_Bit_reference", align 8
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 1, ptr %3) #4
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3) #4
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %2, ptr noundef @.str.10, ptr noundef nonnull align 1 dereferenceable(1) %3)
          to label %14 unwind label %25

14:                                               ; preds = %0
  invoke void @_ZN2io5setIOENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef %2)
          to label %15 unwind label %29

15:                                               ; preds = %14
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %2) #4
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %3) #4
  call void @_ZN5input2reIiEEvRT_(ptr noundef nonnull align 4 dereferenceable(4) @N)
  call void @llvm.lifetime.start.p0(i64 32, ptr %6) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #4
  call void @llvm.lifetime.start.p0(i64 32, ptr %7) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #4
  invoke void @_ZN5input2reINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEJS6_EEEvRT_DpRT0_(ptr noundef nonnull align 8 dereferenceable(32) %6, ptr noundef nonnull align 8 dereferenceable(32) %7)
          to label %16 unwind label %34

16:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 40, ptr %8) #4
  %17 = load i32, ptr @N, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr %9) #4
  call void @_ZNSaIbEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %9) #4
  invoke void @_ZNSt6vectorIbSaIbEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(40) %8, i64 noundef %18, ptr noundef nonnull align 1 dereferenceable(1) %9)
          to label %19 unwind label %38

19:                                               ; preds = %16
  call void @_ZNSt15__new_allocatorIbED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %9) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %9) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #4
  store i32 0, ptr %10, align 4, !tbaa !5
  br label %20

20:                                               ; preds = %65, %19
  %21 = load i32, ptr %10, align 4, !tbaa !5
  %22 = load i32, ptr @N, align 4, !tbaa !5
  %23 = icmp slt i32 %21, %22
  br i1 %23, label %42, label %24

24:                                               ; preds = %20
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #4
  br label %77

25:                                               ; preds = %0
  %26 = landingpad { ptr, i32 }
          cleanup
  %27 = extractvalue { ptr, i32 } %26, 0
  store ptr %27, ptr %4, align 8
  %28 = extractvalue { ptr, i32 } %26, 1
  store i32 %28, ptr %5, align 4
  br label %33

29:                                               ; preds = %14
  %30 = landingpad { ptr, i32 }
          cleanup
  %31 = extractvalue { ptr, i32 } %30, 0
  store ptr %31, ptr %4, align 8
  %32 = extractvalue { ptr, i32 } %30, 1
  store i32 %32, ptr %5, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %2) #4
  br label %33

33:                                               ; preds = %29, %25
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %3) #4
  br label %142

34:                                               ; preds = %15
  %35 = landingpad { ptr, i32 }
          cleanup
  %36 = extractvalue { ptr, i32 } %35, 0
  store ptr %36, ptr %4, align 8
  %37 = extractvalue { ptr, i32 } %35, 1
  store i32 %37, ptr %5, align 4
  br label %141

38:                                               ; preds = %16
  %39 = landingpad { ptr, i32 }
          cleanup
  %40 = extractvalue { ptr, i32 } %39, 0
  store ptr %40, ptr %4, align 8
  %41 = extractvalue { ptr, i32 } %39, 1
  store i32 %41, ptr %5, align 4
  call void @_ZNSt15__new_allocatorIbED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %9) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %9) #4
  br label %140

42:                                               ; preds = %20
  %43 = load i32, ptr %10, align 4, !tbaa !5
  %44 = sext i32 %43 to i64
  %45 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %6, i64 noundef %44)
          to label %46 unwind label %68

46:                                               ; preds = %42
  %47 = load i8, ptr %45, align 1, !tbaa !9
  %48 = sext i8 %47 to i32
  %49 = load i32, ptr %10, align 4, !tbaa !5
  %50 = sext i32 %49 to i64
  %51 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %7, i64 noundef %50)
          to label %52 unwind label %68

52:                                               ; preds = %46
  %53 = load i8, ptr %51, align 1, !tbaa !9
  %54 = sext i8 %53 to i32
  %55 = icmp ne i32 %48, %54
  call void @llvm.lifetime.start.p0(i64 16, ptr %11) #4
  %56 = load i32, ptr %10, align 4, !tbaa !5
  %57 = sext i32 %56 to i64
  %58 = invoke { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40) %8, i64 noundef %57)
          to label %59 unwind label %72

59:                                               ; preds = %52
  %60 = getelementptr inbounds { ptr, i64 }, ptr %11, i32 0, i32 0
  %61 = extractvalue { ptr, i64 } %58, 0
  store ptr %61, ptr %60, align 8
  %62 = getelementptr inbounds { ptr, i64 }, ptr %11, i32 0, i32 1
  %63 = extractvalue { ptr, i64 } %58, 1
  store i64 %63, ptr %62, align 8
  %64 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt14_Bit_referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16) %11, i1 noundef zeroext %55) #4
  call void @llvm.lifetime.end.p0(i64 16, ptr %11) #4
  br label %65

65:                                               ; preds = %59
  %66 = load i32, ptr %10, align 4, !tbaa !5
  %67 = add nsw i32 %66, 1
  store i32 %67, ptr %10, align 4, !tbaa !5
  br label %20, !llvm.loop !10

68:                                               ; preds = %46, %42
  %69 = landingpad { ptr, i32 }
          cleanup
  %70 = extractvalue { ptr, i32 } %69, 0
  store ptr %70, ptr %4, align 8
  %71 = extractvalue { ptr, i32 } %69, 1
  store i32 %71, ptr %5, align 4
  br label %76

72:                                               ; preds = %52
  %73 = landingpad { ptr, i32 }
          cleanup
  %74 = extractvalue { ptr, i32 } %73, 0
  store ptr %74, ptr %4, align 8
  %75 = extractvalue { ptr, i32 } %73, 1
  store i32 %75, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 16, ptr %11) #4
  br label %76

76:                                               ; preds = %72, %68
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #4
  br label %139

77:                                               ; preds = %24
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #4
  store i32 0, ptr %12, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #4
  store i32 0, ptr %13, align 4, !tbaa !5
  br label %78

78:                                               ; preds = %130, %97, %77
  %79 = load i32, ptr %13, align 4, !tbaa !5
  %80 = load i32, ptr @N, align 4, !tbaa !5
  %81 = icmp slt i32 %79, %80
  br i1 %81, label %83, label %82

82:                                               ; preds = %78
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #4
  br label %131

83:                                               ; preds = %78
  %84 = load i32, ptr %13, align 4, !tbaa !5
  %85 = sext i32 %84 to i64
  %86 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %6, i64 noundef %85)
          to label %87 unwind label %100

87:                                               ; preds = %83
  %88 = load i8, ptr %86, align 1, !tbaa !9
  %89 = sext i8 %88 to i32
  %90 = load i32, ptr %13, align 4, !tbaa !5
  %91 = sext i32 %90 to i64
  %92 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %7, i64 noundef %91)
          to label %93 unwind label %100

93:                                               ; preds = %87
  %94 = load i8, ptr %92, align 1, !tbaa !9
  %95 = sext i8 %94 to i32
  %96 = icmp eq i32 %89, %95
  br i1 %96, label %97, label %104

97:                                               ; preds = %93
  %98 = load i32, ptr %13, align 4, !tbaa !5
  %99 = add nsw i32 %98, 1
  store i32 %99, ptr %13, align 4, !tbaa !5
  br label %78, !llvm.loop !12

100:                                              ; preds = %115, %111, %87, %83
  %101 = landingpad { ptr, i32 }
          cleanup
  %102 = extractvalue { ptr, i32 } %101, 0
  store ptr %102, ptr %4, align 8
  %103 = extractvalue { ptr, i32 } %101, 1
  store i32 %103, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #4
  br label %138

104:                                              ; preds = %93
  %105 = load i32, ptr %12, align 4, !tbaa !5
  %106 = add nsw i32 %105, 1
  store i32 %106, ptr %12, align 4, !tbaa !5
  br label %107

107:                                              ; preds = %127, %104
  %108 = load i32, ptr %13, align 4, !tbaa !5
  %109 = load i32, ptr @N, align 4, !tbaa !5
  %110 = icmp slt i32 %108, %109
  br i1 %110, label %111, label %125

111:                                              ; preds = %107
  %112 = load i32, ptr %13, align 4, !tbaa !5
  %113 = sext i32 %112 to i64
  %114 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %6, i64 noundef %113)
          to label %115 unwind label %100

115:                                              ; preds = %111
  %116 = load i8, ptr %114, align 1, !tbaa !9
  %117 = sext i8 %116 to i32
  %118 = load i32, ptr %13, align 4, !tbaa !5
  %119 = sext i32 %118 to i64
  %120 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %7, i64 noundef %119)
          to label %121 unwind label %100

121:                                              ; preds = %115
  %122 = load i8, ptr %120, align 1, !tbaa !9
  %123 = sext i8 %122 to i32
  %124 = icmp ne i32 %117, %123
  br label %125

125:                                              ; preds = %121, %107
  %126 = phi i1 [ false, %107 ], [ %124, %121 ]
  br i1 %126, label %127, label %130

127:                                              ; preds = %125
  %128 = load i32, ptr %13, align 4, !tbaa !5
  %129 = add nsw i32 %128, 1
  store i32 %129, ptr %13, align 4, !tbaa !5
  br label %107, !llvm.loop !13

130:                                              ; preds = %125
  br label %78, !llvm.loop !12

131:                                              ; preds = %82
  invoke void @_ZN6output2psIiJEEEvRKT_DpRKT0_(ptr noundef nonnull align 4 dereferenceable(4) %12)
          to label %132 unwind label %134

132:                                              ; preds = %131
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  call void @_ZNSt13_Bvector_baseISaIbEED2Ev(ptr noundef nonnull align 8 dereferenceable(40) %8) #4
  call void @llvm.lifetime.end.p0(i64 40, ptr %8) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr %7) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr %6) #4
  %133 = load i32, ptr %1, align 4
  ret i32 %133

134:                                              ; preds = %131
  %135 = landingpad { ptr, i32 }
          cleanup
  %136 = extractvalue { ptr, i32 } %135, 0
  store ptr %136, ptr %4, align 8
  %137 = extractvalue { ptr, i32 } %135, 1
  store i32 %137, ptr %5, align 4
  br label %138

138:                                              ; preds = %134, %100
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  br label %139

139:                                              ; preds = %138, %76
  call void @_ZNSt13_Bvector_baseISaIbEED2Ev(ptr noundef nonnull align 8 dereferenceable(40) %8) #4
  br label %140

140:                                              ; preds = %139, %38
  call void @llvm.lifetime.end.p0(i64 40, ptr %8) #4
  br label %141

141:                                              ; preds = %140, %34
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr %7) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr %6) #4
  br label %142

142:                                              ; preds = %141, %33
  %143 = load ptr, ptr %4, align 8
  %144 = load i32, ptr %5, align 4
  %145 = insertvalue { ptr, i32 } poison, ptr %143, 0
  %146 = insertvalue { ptr, i32 } %145, i32 %144, 1
  resume { ptr, i32 } %146
}

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN5input2reIiEEvRT_(ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN5input2reINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEJS6_EEEvRT_DpRT0_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaIbEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 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 #2 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40), i64 noundef) #2 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) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN6output2psIiJEEEvRKT_DpRKT0_(ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt13_Bvector_baseISaIbEED2Ev(ptr noundef nonnull align 8 dereferenceable(40)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #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 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}
!12 = distinct !{!12, !11}
!13 = distinct !{!13, !11}


; 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::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }
%"class.std::allocator" = type { i8 }
%"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.3" = type { i8 }
%"struct.std::_Bit_reference" = type { ptr, i64 }

@N = external dso_local global i32, align 4
@.str.10 = external hidden unnamed_addr constant [1 x i8], align 1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN2io5setIOENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef) local_unnamed_addr #2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 personality ptr @__gxx_personality_v0 {
  %1 = alloca %"class.std::__cxx11::basic_string", align 8
  %2 = alloca %"class.std::allocator", align 1
  %3 = alloca %"class.std::__cxx11::basic_string", align 8
  %4 = alloca %"class.std::__cxx11::basic_string", align 8
  %5 = alloca %"class.std::vector", align 8
  %6 = alloca %"class.std::allocator.3", align 1
  %7 = alloca %"struct.std::_Bit_reference", align 8
  %8 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %2) #4
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %2) #4
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %1, ptr noundef nonnull @.str.10, ptr noundef nonnull align 1 dereferenceable(1) %2)
          to label %9 unwind label %19

9:                                                ; preds = %0
  invoke void @_ZN2io5setIOENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull %1)
          to label %10 unwind label %21

10:                                               ; preds = %9
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %1) #4
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %2) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %2) #4
  call void @_ZN5input2reIiEEvRT_(ptr noundef nonnull align 4 dereferenceable(4) @N)
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %3) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #4
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %4) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #4
  invoke void @_ZN5input2reINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEJS6_EEEvRT_DpRT0_(ptr noundef nonnull align 8 dereferenceable(32) %3, ptr noundef nonnull align 8 dereferenceable(32) %4)
          to label %11 unwind label %24

11:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 40, ptr nonnull %5) #4
  %12 = load i32, ptr @N, align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %6) #4
  call void @_ZNSaIbEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #4
  invoke void @_ZNSt6vectorIbSaIbEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(40) %5, i64 noundef %13, ptr noundef nonnull align 1 dereferenceable(1) %6)
          to label %14 unwind label %26

14:                                               ; preds = %11
  call void @_ZNSt15__new_allocatorIbED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %6) #4
  %15 = load i32, ptr @N, align 4, !tbaa !5
  %16 = icmp sgt i32 %15, 0
  br i1 %16, label %.lr.ph, label %._crit_edge.thread

._crit_edge.thread:                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %8) #4
  store i32 0, ptr %8, align 4, !tbaa !5
  br label %._crit_edge38

.lr.ph:                                           ; preds = %14
  %17 = getelementptr inbounds i8, ptr %7, i64 8
  br label %28

._crit_edge:                                      ; preds = %34
  %18 = icmp sgt i32 %39, 0
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %8) #4
  store i32 0, ptr %8, align 4, !tbaa !5
  br i1 %18, label %.lr.ph37, label %._crit_edge38

19:                                               ; preds = %0
  %20 = landingpad { ptr, i32 }
          cleanup
  br label %23

21:                                               ; preds = %9
  %22 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %1) #4
  br label %23

23:                                               ; preds = %21, %19
  %.pn = phi { ptr, i32 } [ %22, %21 ], [ %20, %19 ]
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %2) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %2) #4
  br label %74

24:                                               ; preds = %10
  %25 = landingpad { ptr, i32 }
          cleanup
  br label %73

26:                                               ; preds = %11
  %27 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIbED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %6) #4
  br label %72

28:                                               ; preds = %.lr.ph, %34
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %34 ]
  %29 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %3, i64 noundef %indvars.iv)
  %30 = load i8, ptr %29, align 1, !tbaa !9
  %31 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %4, i64 noundef %indvars.iv)
  %32 = load i8, ptr %31, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %7) #4
  %33 = invoke { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40) %5, i64 noundef %indvars.iv)
          to label %34 unwind label %42

34:                                               ; preds = %28
  %35 = icmp ne i8 %30, %32
  %36 = extractvalue { ptr, i64 } %33, 0
  store ptr %36, ptr %7, align 8
  %37 = extractvalue { ptr, i64 } %33, 1
  store i64 %37, ptr %17, 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) #4
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %7) #4
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %39 = load i32, ptr @N, align 4, !tbaa !5
  %40 = sext i32 %39 to i64
  %41 = icmp slt i64 %indvars.iv.next, %40
  br i1 %41, label %28, label %._crit_edge, !llvm.loop !10

42:                                               ; preds = %28
  %43 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %7) #4
  br label %71

._crit_edge38:                                    ; preds = %.backedge, %._crit_edge.thread, %._crit_edge
  invoke void @_ZN6output2psIiJEEEvRKT_DpRKT0_(ptr noundef nonnull align 4 dereferenceable(4) %8)
          to label %68 unwind label %69

.lr.ph37:                                         ; preds = %._crit_edge, %.backedge
  %44 = phi i32 [ %53, %.backedge ], [ 0, %._crit_edge ]
  %.035 = phi i32 [ %.0.be, %.backedge ], [ 0, %._crit_edge ]
  %45 = sext i32 %.035 to i64
  %46 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %3, i64 noundef %45)
  %47 = load i8, ptr %46, align 1, !tbaa !9
  %48 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %4, i64 noundef %45)
  %49 = load i8, ptr %48, align 1, !tbaa !9
  %50 = icmp eq i8 %47, %49
  br i1 %50, label %51, label %56

51:                                               ; preds = %.lr.ph37
  %52 = add nsw i32 %.035, 1
  br label %.backedge

.backedge.loopexit:                               ; preds = %.lr.ph32, %64
  %.0.be.ph.in = phi i64 [ %indvars.iv40, %.lr.ph32 ], [ %indvars.iv.next41, %64 ]
  %.0.be.ph = trunc i64 %.0.be.ph.in to i32
  br label %.backedge

.backedge:                                        ; preds = %.backedge.loopexit, %56, %51
  %53 = phi i32 [ %44, %51 ], [ %57, %56 ], [ %57, %.backedge.loopexit ]
  %.0.be = phi i32 [ %52, %51 ], [ %.035, %56 ], [ %.0.be.ph, %.backedge.loopexit ]
  %54 = load i32, ptr @N, align 4, !tbaa !5
  %55 = icmp slt i32 %.0.be, %54
  br i1 %55, label %.lr.ph37, label %._crit_edge38, !llvm.loop !12

56:                                               ; preds = %.lr.ph37
  %57 = add nsw i32 %44, 1
  store i32 %57, ptr %8, align 4, !tbaa !5
  %58 = load i32, ptr @N, align 4, !tbaa !5
  %59 = icmp slt i32 %.035, %58
  br i1 %59, label %.lr.ph32, label %.backedge

.lr.ph32:                                         ; preds = %56, %64
  %indvars.iv40 = phi i64 [ %indvars.iv.next41, %64 ], [ %45, %56 ]
  %60 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %3, i64 noundef %indvars.iv40)
  %61 = load i8, ptr %60, align 1, !tbaa !9
  %62 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %4, i64 noundef %indvars.iv40)
  %63 = load i8, ptr %62, align 1, !tbaa !9
  %.not = icmp eq i8 %61, %63
  br i1 %.not, label %.backedge.loopexit, label %64

64:                                               ; preds = %.lr.ph32
  %indvars.iv.next41 = add nsw i64 %indvars.iv40, 1
  %65 = load i32, ptr @N, align 4, !tbaa !5
  %66 = sext i32 %65 to i64
  %67 = icmp slt i64 %indvars.iv.next41, %66
  br i1 %67, label %.lr.ph32, label %.backedge.loopexit, !llvm.loop !13

68:                                               ; preds = %._crit_edge38
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %8) #4
  call void @_ZNSt13_Bvector_baseISaIbEED2Ev(ptr noundef nonnull align 8 dereferenceable(40) %5) #4
  call void @llvm.lifetime.end.p0(i64 40, ptr nonnull %5) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %3) #4
  ret i32 0

69:                                               ; preds = %._crit_edge38
  %70 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %8) #4
  br label %71

71:                                               ; preds = %69, %42
  %.pn24 = phi { ptr, i32 } [ %43, %42 ], [ %70, %69 ]
  call void @_ZNSt13_Bvector_baseISaIbEED2Ev(ptr noundef nonnull align 8 dereferenceable(40) %5) #4
  br label %72

72:                                               ; preds = %71, %26
  %.pn24.pn = phi { ptr, i32 } [ %.pn24, %71 ], [ %27, %26 ]
  call void @llvm.lifetime.end.p0(i64 40, ptr nonnull %5) #4
  br label %73

73:                                               ; preds = %72, %24
  %.pn24.pn.pn = phi { ptr, i32 } [ %.pn24.pn, %72 ], [ %25, %24 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %3) #4
  br label %74

74:                                               ; preds = %73, %23
  %.pn24.pn.pn.pn = phi { ptr, i32 } [ %.pn24.pn.pn, %73 ], [ %.pn, %23 ]
  resume { ptr, i32 } %.pn24.pn.pn.pn
}

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN5input2reIiEEvRT_(ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN5input2reINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEJS6_EEEvRT_DpRT0_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaIbEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 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 #2 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40), i64 noundef) local_unnamed_addr #2 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 #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN6output2psIiJEEEvRKT_DpRKT0_(ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt13_Bvector_baseISaIbEED2Ev(ptr noundef nonnull align 8 dereferenceable(40)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #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 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}
!12 = distinct !{!12, !11}
!13 = distinct !{!13, !11}


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