; LLVM IR from eyangch/competitive-programming :: AdventOfCode/2020/day1 (reportrepair2)

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

%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<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::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.__gnu_cxx::__normal_iterator" = type { ptr }

@N = external dso_local global i32, align 4
@a = external dso_local global %"class.std::vector", align 8
@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@stdin = external global ptr, align 8
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %4 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %10 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %11 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %12 = alloca i32, align 4
  %13 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  store i32 0, ptr %1, align 4
  %14 = load ptr, ptr @stdin, align 8, !tbaa !5
  %15 = call ptr @freopen(ptr noundef @.str, ptr noundef @.str.2, ptr noundef %14)
  %16 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %17 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !9
  %18 = getelementptr i8, ptr %17, i64 -24
  %19 = load i64, ptr %18, align 8
  %20 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %19
  %21 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %20, ptr noundef null)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #7
  br label %22

22:                                               ; preds = %29, %0
  %23 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %24 = load ptr, ptr %23, align 8, !tbaa !9
  %25 = getelementptr i8, ptr %24, i64 -24
  %26 = load i64, ptr %25, align 8
  %27 = getelementptr inbounds i8, ptr %23, i64 %26
  %28 = call noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264) %27)
  br i1 %28, label %29, label %32

29:                                               ; preds = %22
  %30 = load i32, ptr @N, align 4, !tbaa !11
  %31 = add nsw i32 %30, 1
  store i32 %31, ptr @N, align 4, !tbaa !11
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) @a, ptr noundef nonnull align 4 dereferenceable(4) %2)
  br label %22, !llvm.loop !13

32:                                               ; preds = %22
  %33 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) @a) #7
  %34 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %3, i32 0, i32 0
  store ptr %33, ptr %34, align 8
  %35 = call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) @a) #7
  %36 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %4, i32 0, i32 0
  store ptr %35, ptr %36, align 8
  %37 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %3, i32 0, i32 0
  %38 = load ptr, ptr %37, align 8
  %39 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %4, i32 0, i32 0
  %40 = load ptr, ptr %39, align 8
  call void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEEvT_S7_(ptr %38, ptr %40)
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #7
  store i32 0, ptr %5, align 4, !tbaa !11
  br label %41

41:                                               ; preds = %131, %32
  %42 = load i32, ptr %5, align 4, !tbaa !11
  %43 = load i32, ptr @N, align 4, !tbaa !11
  %44 = icmp slt i32 %42, %43
  br i1 %44, label %46, label %45

45:                                               ; preds = %41
  store i32 4, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #7
  br label %134

46:                                               ; preds = %41
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #7
  %47 = load i32, ptr %5, align 4, !tbaa !11
  %48 = add nsw i32 %47, 1
  store i32 %48, ptr %7, align 4, !tbaa !11
  br label %49

49:                                               ; preds = %127, %46
  %50 = load i32, ptr %7, align 4, !tbaa !11
  %51 = load i32, ptr @N, align 4, !tbaa !11
  %52 = icmp slt i32 %50, %51
  br i1 %52, label %54, label %53

53:                                               ; preds = %49
  store i32 7, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #7
  br label %130

54:                                               ; preds = %49
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #7
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #7
  %55 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) @a) #7
  %56 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %10, i32 0, i32 0
  store ptr %55, ptr %56, align 8
  %57 = call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) @a) #7
  %58 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %11, i32 0, i32 0
  store ptr %57, ptr %58, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #7
  %59 = load i32, ptr %5, align 4, !tbaa !11
  %60 = sext i32 %59 to i64
  %61 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @a, i64 noundef %60) #7
  %62 = load i32, ptr %61, align 4, !tbaa !11
  %63 = sub nsw i32 2020, %62
  %64 = load i32, ptr %7, align 4, !tbaa !11
  %65 = sext i32 %64 to i64
  %66 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @a, i64 noundef %65) #7
  %67 = load i32, ptr %66, align 4, !tbaa !11
  %68 = sub nsw i32 %63, %67
  store i32 %68, ptr %12, align 4, !tbaa !11
  %69 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %10, i32 0, i32 0
  %70 = load ptr, ptr %69, align 8
  %71 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %11, i32 0, i32 0
  %72 = load ptr, ptr %71, align 8
  %73 = call ptr @_ZSt11lower_boundIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEiET_S7_S7_RKT0_(ptr %70, ptr %72, ptr noundef nonnull align 4 dereferenceable(4) %12)
  %74 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %9, i32 0, i32 0
  store ptr %73, ptr %74, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #7
  %75 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) @a) #7
  %76 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %13, i32 0, i32 0
  store ptr %75, ptr %76, align 8
  %77 = call noundef i64 @_ZN9__gnu_cxxmiIPiSt6vectorIiSaIiEEEENS_17__normal_iteratorIT_T0_E15difference_typeERKS8_SB_(ptr noundef nonnull align 8 dereferenceable(8) %9, ptr noundef nonnull align 8 dereferenceable(8) %13) #7
  %78 = trunc i64 %77 to i32
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #7
  store i32 %78, ptr %8, align 4, !tbaa !11
  %79 = load i32, ptr %8, align 4, !tbaa !11
  %80 = load i32, ptr @N, align 4, !tbaa !11
  %81 = icmp eq i32 %79, %80
  br i1 %81, label %106, label %82

82:                                               ; preds = %54
  %83 = load i32, ptr %8, align 4, !tbaa !11
  %84 = load i32, ptr %5, align 4, !tbaa !11
  %85 = icmp eq i32 %83, %84
  br i1 %85, label %106, label %86

86:                                               ; preds = %82
  %87 = load i32, ptr %8, align 4, !tbaa !11
  %88 = load i32, ptr %7, align 4, !tbaa !11
  %89 = icmp eq i32 %87, %88
  br i1 %89, label %106, label %90

90:                                               ; preds = %86
  %91 = load i32, ptr %5, align 4, !tbaa !11
  %92 = sext i32 %91 to i64
  %93 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @a, i64 noundef %92) #7
  %94 = load i32, ptr %93, align 4, !tbaa !11
  %95 = load i32, ptr %7, align 4, !tbaa !11
  %96 = sext i32 %95 to i64
  %97 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @a, i64 noundef %96) #7
  %98 = load i32, ptr %97, align 4, !tbaa !11
  %99 = add nsw i32 %94, %98
  %100 = load i32, ptr %8, align 4, !tbaa !11
  %101 = sext i32 %100 to i64
  %102 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @a, i64 noundef %101) #7
  %103 = load i32, ptr %102, align 4, !tbaa !11
  %104 = add nsw i32 %99, %103
  %105 = icmp ne i32 %104, 2020
  br i1 %105, label %106, label %107

106:                                              ; preds = %90, %86, %82, %54
  store i32 9, ptr %6, align 4
  br label %124

107:                                              ; preds = %90
  %108 = load i32, ptr %5, align 4, !tbaa !11
  %109 = sext i32 %108 to i64
  %110 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @a, i64 noundef %109) #7
  %111 = load i32, ptr %110, align 4, !tbaa !11
  %112 = load i32, ptr %7, align 4, !tbaa !11
  %113 = sext i32 %112 to i64
  %114 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @a, i64 noundef %113) #7
  %115 = load i32, ptr %114, align 4, !tbaa !11
  %116 = mul nsw i32 %111, %115
  %117 = load i32, ptr %8, align 4, !tbaa !11
  %118 = sext i32 %117 to i64
  %119 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @a, i64 noundef %118) #7
  %120 = load i32, ptr %119, align 4, !tbaa !11
  %121 = mul nsw i32 %116, %120
  %122 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %121)
  %123 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %122, ptr noundef @.str.3)
  store i32 0, ptr %6, align 4
  br label %124

124:                                              ; preds = %107, %106
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #7
  %125 = load i32, ptr %6, align 4
  switch i32 %125, label %136 [
    i32 0, label %126
    i32 9, label %127
  ]

126:                                              ; preds = %124
  br label %127

127:                                              ; preds = %126, %124
  %128 = load i32, ptr %7, align 4, !tbaa !11
  %129 = add nsw i32 %128, 1
  store i32 %129, ptr %7, align 4, !tbaa !11
  br label %49, !llvm.loop !15

130:                                              ; preds = %53
  br label %131

131:                                              ; preds = %130
  %132 = load i32, ptr %5, align 4, !tbaa !11
  %133 = add nsw i32 %132, 1
  store i32 %133, ptr %5, align 4, !tbaa !11
  br label %41, !llvm.loop !16

134:                                              ; preds = %45
  store i32 0, ptr %1, align 4
  store i32 1, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  %135 = load i32, ptr %1, align 4
  ret i32 %135

136:                                              ; preds = %124
  unreachable
}

declare ptr @freopen(ptr noundef, ptr noundef, ptr noundef) #1

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) #1

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

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #1

; Function Attrs: mustprogress uwtable
declare noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264)) #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) #4 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEEvT_S7_(ptr, ptr) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZN9__gnu_cxxmiIPiSt6vectorIiSaIiEEEENS_17__normal_iteratorIT_T0_E15difference_typeERKS8_SB_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #6

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local ptr @_ZSt11lower_boundIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEiET_S7_S7_RKT0_(ptr, ptr, ptr noundef nonnull align 4 dereferenceable(4)) #5

; 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) #2 align 2

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

; 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

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #1

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 = { "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 nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { 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 = { inlinehint 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 #7 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"vtable pointer", !8, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}
!16 = distinct !{!16, !14}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<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::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.__gnu_cxx::__normal_iterator" = type { ptr }

@N = external dso_local local_unnamed_addr global i32, align 4
@a = external dso_local global %"class.std::vector", align 8
@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@stdin = external local_unnamed_addr global ptr, align 8
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.3 = 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 {
  %1 = alloca i32, align 4
  %2 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %3 = alloca i32, align 4
  %4 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %5 = load ptr, ptr @stdin, align 8, !tbaa !5
  %6 = tail call ptr @freopen(ptr noundef nonnull @.str, ptr noundef nonnull @.str.2, ptr noundef %5)
  %7 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %8 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !9
  %9 = getelementptr i8, ptr %8, i64 -24
  %10 = load i64, ptr %9, align 8
  %11 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %10
  %12 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %11, ptr noundef null)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #7
  %13 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %14 = load ptr, ptr %13, align 8, !tbaa !9
  %15 = getelementptr i8, ptr %14, i64 -24
  %16 = load i64, ptr %15, align 8
  %17 = getelementptr inbounds i8, ptr %13, i64 %16
  %18 = call noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264) %17)
  br i1 %18, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %19 = load i32, ptr @N, align 4, !tbaa !11
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr @N, align 4, !tbaa !11
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) @a, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %21 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %22 = load ptr, ptr %21, align 8, !tbaa !9
  %23 = getelementptr i8, ptr %22, i64 -24
  %24 = load i64, ptr %23, align 8
  %25 = getelementptr inbounds i8, ptr %21, i64 %24
  %26 = call noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264) %25)
  br i1 %26, label %.lr.ph, label %._crit_edge, !llvm.loop !13

._crit_edge:                                      ; preds = %.lr.ph, %0
  %27 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) @a) #7
  %28 = call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) @a) #7
  call void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEEvT_S7_(ptr %27, ptr %28)
  %29 = load i32, ptr @N, align 4, !tbaa !11
  %30 = icmp sgt i32 %29, 0
  br i1 %30, label %.lr.ph32, label %._crit_edge33

.loopexit.loopexit:                               ; preds = %74
  %.pre = sext i32 %75 to i64
  br label %.loopexit

.loopexit:                                        ; preds = %.loopexit.loopexit, %.lr.ph32
  %.pre-phi = phi i64 [ %.pre, %.loopexit.loopexit ], [ %34, %.lr.ph32 ]
  %31 = phi i32 [ %75, %.loopexit.loopexit ], [ %33, %.lr.ph32 ]
  %32 = icmp slt i64 %indvars.iv.next38, %.pre-phi
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  br i1 %32, label %.lr.ph32, label %._crit_edge33, !llvm.loop !15

._crit_edge33:                                    ; preds = %.loopexit, %._crit_edge
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #7
  ret i32 0

.lr.ph32:                                         ; preds = %._crit_edge, %.loopexit
  %33 = phi i32 [ %31, %.loopexit ], [ %29, %._crit_edge ]
  %indvars.iv37 = phi i64 [ %indvars.iv.next38, %.loopexit ], [ 0, %._crit_edge ]
  %indvars.iv = phi i64 [ %indvars.iv.next, %.loopexit ], [ 1, %._crit_edge ]
  %indvars.iv.next38 = add nuw nsw i64 %indvars.iv37, 1
  %34 = sext i32 %33 to i64
  %35 = icmp slt i64 %indvars.iv.next38, %34
  br i1 %35, label %.lr.ph29, label %.loopexit

.lr.ph29:                                         ; preds = %.lr.ph32, %74
  %indvars.iv34 = phi i64 [ %indvars.iv.next35, %74 ], [ %indvars.iv, %.lr.ph32 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #7
  %36 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) @a) #7
  %37 = call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) @a) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #7
  %38 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @a, i64 noundef %indvars.iv37) #7
  %39 = load i32, ptr %38, align 4, !tbaa !11
  %40 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @a, i64 noundef %indvars.iv34) #7
  %41 = load i32, ptr %40, align 4, !tbaa !11
  %42 = add i32 %39, %41
  %43 = sub i32 2020, %42
  store i32 %43, ptr %3, align 4, !tbaa !11
  %44 = call ptr @_ZSt11lower_boundIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEiET_S7_S7_RKT0_(ptr %36, ptr %37, ptr noundef nonnull align 4 dereferenceable(4) %3)
  store ptr %44, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #7
  %45 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) @a) #7
  store ptr %45, ptr %4, align 8
  %46 = call noundef i64 @_ZN9__gnu_cxxmiIPiSt6vectorIiSaIiEEEENS_17__normal_iteratorIT_T0_E15difference_typeERKS8_SB_(ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 8 dereferenceable(8) %4) #7
  %47 = trunc i64 %46 to i32
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #7
  %48 = load i32, ptr @N, align 4, !tbaa !11
  %49 = icmp eq i32 %48, %47
  %50 = and i64 %46, 4294967295
  %51 = icmp eq i64 %indvars.iv37, %50
  %or.cond = or i1 %51, %49
  %52 = icmp eq i64 %indvars.iv34, %50
  %or.cond24 = or i1 %52, %or.cond
  br i1 %or.cond24, label %74, label %53

53:                                               ; preds = %.lr.ph29
  %54 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @a, i64 noundef %indvars.iv37) #7
  %55 = load i32, ptr %54, align 4, !tbaa !11
  %56 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @a, i64 noundef %indvars.iv34) #7
  %57 = load i32, ptr %56, align 4, !tbaa !11
  %58 = add nsw i32 %57, %55
  %sext = shl i64 %46, 32
  %59 = ashr exact i64 %sext, 32
  %60 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @a, i64 noundef %59) #7
  %61 = load i32, ptr %60, align 4, !tbaa !11
  %62 = add nsw i32 %58, %61
  %.not = icmp eq i32 %62, 2020
  br i1 %.not, label %63, label %74

63:                                               ; preds = %53
  %64 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @a, i64 noundef %indvars.iv37) #7
  %65 = load i32, ptr %64, align 4, !tbaa !11
  %66 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @a, i64 noundef %indvars.iv34) #7
  %67 = load i32, ptr %66, align 4, !tbaa !11
  %68 = mul nsw i32 %67, %65
  %69 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @a, i64 noundef %59) #7
  %70 = load i32, ptr %69, align 4, !tbaa !11
  %71 = mul nsw i32 %68, %70
  %72 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %71)
  %73 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %72, ptr noundef nonnull @.str.3)
  br label %74

74:                                               ; preds = %.lr.ph29, %53, %63
  %indvars.iv.next35 = add nuw nsw i64 %indvars.iv34, 1
  %75 = load i32, ptr @N, align 4, !tbaa !11
  %76 = trunc nuw i64 %indvars.iv.next35 to i32
  %77 = icmp sgt i32 %75, %76
  br i1 %77, label %.lr.ph29, label %.loopexit.loopexit, !llvm.loop !16
}

declare ptr @freopen(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) local_unnamed_addr #1

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

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

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 #1

; Function Attrs: mustprogress uwtable
declare noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #4 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEEvT_S7_(ptr, ptr) local_unnamed_addr #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZN9__gnu_cxxmiIPiSt6vectorIiSaIiEEEENS_17__normal_iteratorIT_T0_E15difference_typeERKS8_SB_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #6

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local ptr @_ZSt11lower_boundIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEiET_S7_S7_RKT0_(ptr, ptr, ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #5

; 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 #2 align 2

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

; 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

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #1

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 = { "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 nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress 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 = { inlinehint 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 #7 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"vtable pointer", !8, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}
!16 = distinct !{!16, !14}


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