; LLVM IR from AnneLivia/Competitive-Programming :: Online Judges/URI/2543 (main)

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

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

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca %"class.std::vector", align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca %"struct.std::pair", align 4
  %10 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.start.p0(i64 24, ptr %6) #6
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #6
  br label %11

11:                                               ; preds = %78, %0
  %12 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
          to label %13 unwind label %35

13:                                               ; preds = %11
  %14 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %12, ptr noundef nonnull align 4 dereferenceable(4) %3)
          to label %15 unwind label %35

15:                                               ; preds = %13
  %16 = load ptr, ptr %14, align 8, !tbaa !5
  %17 = getelementptr i8, ptr %16, i64 -24
  %18 = load i64, ptr %17, align 8
  %19 = getelementptr inbounds i8, ptr %14, i64 %18
  %20 = invoke noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264) %19)
          to label %21 unwind label %35

21:                                               ; preds = %15
  br i1 %20, label %22, label %79

22:                                               ; preds = %21
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) %6) #6
  br label %23

23:                                               ; preds = %34, %22
  %24 = load i32, ptr %2, align 4, !tbaa !8
  %25 = add nsw i32 %24, -1
  store i32 %25, ptr %2, align 4, !tbaa !8
  %26 = icmp ne i32 %24, 0
  br i1 %26, label %27, label %43

27:                                               ; preds = %23
  %28 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %4)
          to label %29 unwind label %35

29:                                               ; preds = %27
  %30 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %28, ptr noundef nonnull align 4 dereferenceable(4) %5)
          to label %31 unwind label %35

31:                                               ; preds = %29
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #6
  %32 = invoke i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) %4, ptr noundef nonnull align 4 dereferenceable(4) %5)
          to label %33 unwind label %39

33:                                               ; preds = %31
  store i64 %32, ptr %9, align 4
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %6, ptr noundef nonnull align 4 dereferenceable(8) %9)
          to label %34 unwind label %39

34:                                               ; preds = %33
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #6
  br label %23, !llvm.loop !11

35:                                               ; preds = %76, %73, %29, %27, %15, %13, %11
  %36 = landingpad { ptr, i32 }
          cleanup
  %37 = extractvalue { ptr, i32 } %36, 0
  store ptr %37, ptr %7, align 8
  %38 = extractvalue { ptr, i32 } %36, 1
  store i32 %38, ptr %8, align 4
  br label %81

39:                                               ; preds = %33, %31
  %40 = landingpad { ptr, i32 }
          cleanup
  %41 = extractvalue { ptr, i32 } %40, 0
  store ptr %41, ptr %7, align 8
  %42 = extractvalue { ptr, i32 } %40, 1
  store i32 %42, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #6
  br label %81

43:                                               ; preds = %23
  store i32 0, ptr %5, align 4, !tbaa !8
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #6
  store i32 0, ptr %10, align 4, !tbaa !8
  br label %44

44:                                               ; preds = %70, %43
  %45 = load i32, ptr %10, align 4, !tbaa !8
  %46 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %6) #6
  %47 = trunc i64 %46 to i32
  %48 = icmp slt i32 %45, %47
  br i1 %48, label %50, label %49

49:                                               ; preds = %44
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #6
  br label %73

50:                                               ; preds = %44
  %51 = load i32, ptr %10, align 4, !tbaa !8
  %52 = sext i32 %51 to i64
  %53 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %6, i64 noundef %52) #6
  %54 = getelementptr inbounds %"struct.std::pair", ptr %53, i32 0, i32 0
  %55 = load i32, ptr %54, align 4, !tbaa !13
  %56 = load i32, ptr %3, align 4, !tbaa !8
  %57 = icmp eq i32 %55, %56
  br i1 %57, label %58, label %69

58:                                               ; preds = %50
  %59 = load i32, ptr %10, align 4, !tbaa !8
  %60 = sext i32 %59 to i64
  %61 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %6, i64 noundef %60) #6
  %62 = getelementptr inbounds %"struct.std::pair", ptr %61, i32 0, i32 1
  %63 = load i32, ptr %62, align 4, !tbaa !15
  %64 = icmp eq i32 %63, 0
  br i1 %64, label %65, label %68

65:                                               ; preds = %58
  %66 = load i32, ptr %5, align 4, !tbaa !8
  %67 = add nsw i32 %66, 1
  store i32 %67, ptr %5, align 4, !tbaa !8
  br label %68

68:                                               ; preds = %65, %58
  br label %69

69:                                               ; preds = %68, %50
  br label %70

70:                                               ; preds = %69
  %71 = load i32, ptr %10, align 4, !tbaa !8
  %72 = add nsw i32 %71, 1
  store i32 %72, ptr %10, align 4, !tbaa !8
  br label %44, !llvm.loop !16

73:                                               ; preds = %49
  %74 = load i32, ptr %5, align 4, !tbaa !8
  %75 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %74)
          to label %76 unwind label %35

76:                                               ; preds = %73
  %77 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %75, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %78 unwind label %35

78:                                               ; preds = %76
  br label %11, !llvm.loop !17

79:                                               ; preds = %21
  store i32 0, ptr %1, align 4
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  %80 = load i32, ptr %1, align 4
  ret i32 %80

81:                                               ; preds = %39, %35
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  br label %82

82:                                               ; preds = %81
  %83 = load ptr, ptr %7, align 8
  %84 = load i32, ptr %8, align 4
  %85 = insertvalue { ptr, i32 } poison, ptr %83, 0
  %86 = insertvalue { ptr, i32 } %85, i32 %84, 1
  resume { ptr, i32 } %86
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #3

declare i32 @__gxx_personality_v0(...)

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(8)) #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #4

; 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 noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #3

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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 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 = { 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 = { "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 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #6 = { nounwind }

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

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!14, !9, i64 0}
!14 = !{!"_ZTSSt4pairIiiE", !9, i64 0, !9, i64 4}
!15 = !{!14, !9, i64 4}
!16 = distinct !{!16, !12}
!17 = distinct !{!17, !12}


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

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

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca %"class.std::vector", align 8
  %6 = alloca %"struct.std::pair", align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #6
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %5) #6
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #6
  br label %7

7:                                                ; preds = %53, %0
  %8 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
          to label %9 unwind label %.loopexit.split-lp

9:                                                ; preds = %7
  %10 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %8, ptr noundef nonnull align 4 dereferenceable(4) %2)
          to label %11 unwind label %.loopexit.split-lp

11:                                               ; preds = %9
  %12 = load ptr, ptr %10, align 8, !tbaa !5
  %13 = getelementptr i8, ptr %12, i64 -24
  %14 = load i64, ptr %13, align 8
  %15 = getelementptr inbounds i8, ptr %10, i64 %14
  %16 = invoke noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264) %15)
          to label %17 unwind label %.loopexit.split-lp

17:                                               ; preds = %11
  br i1 %16, label %18, label %55

18:                                               ; preds = %17
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #6
  %19 = load i32, ptr %1, align 4, !tbaa !8
  %20 = add nsw i32 %19, -1
  store i32 %20, ptr %1, align 4, !tbaa !8
  %.not9 = icmp eq i32 %19, 0
  br i1 %.not9, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %18, %27
  %21 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %3)
          to label %22 unwind label %.loopexit

22:                                               ; preds = %.lr.ph
  %23 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %21, ptr noundef nonnull align 4 dereferenceable(4) %4)
          to label %24 unwind label %.loopexit

24:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #6
  %25 = invoke i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) %3, ptr noundef nonnull align 4 dereferenceable(4) %4)
          to label %26 unwind label %30

26:                                               ; preds = %24
  store i64 %25, ptr %6, align 8
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %5, ptr noundef nonnull align 4 dereferenceable(8) %6)
          to label %27 unwind label %30

27:                                               ; preds = %26
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #6
  %28 = load i32, ptr %1, align 4, !tbaa !8
  %29 = add nsw i32 %28, -1
  store i32 %29, ptr %1, align 4, !tbaa !8
  %.not = icmp eq i32 %28, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !11

.loopexit:                                        ; preds = %.lr.ph, %22
  %lpad.loopexit = landingpad { ptr, i32 }
          cleanup
  br label %56

.loopexit.split-lp:                               ; preds = %7, %9, %11, %._crit_edge13, %53
  %lpad.loopexit.split-lp = landingpad { ptr, i32 }
          cleanup
  br label %56

30:                                               ; preds = %26, %24
  %31 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #6
  br label %56

._crit_edge:                                      ; preds = %27, %18
  store i32 0, ptr %4, align 4, !tbaa !8
  %32 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #6
  %33 = trunc i64 %32 to i32
  %34 = icmp sgt i32 %33, 0
  br i1 %34, label %.lr.ph12, label %._crit_edge13

._crit_edge13:                                    ; preds = %49, %._crit_edge
  %35 = load i32, ptr %4, align 4, !tbaa !8
  %36 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %35)
          to label %53 unwind label %.loopexit.split-lp

.lr.ph12:                                         ; preds = %._crit_edge, %49
  %indvars.iv = phi i64 [ %indvars.iv.next, %49 ], [ 0, %._crit_edge ]
  %37 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %indvars.iv) #6
  %38 = load i32, ptr %37, align 4, !tbaa !13
  %39 = load i32, ptr %2, align 4, !tbaa !8
  %40 = icmp eq i32 %38, %39
  br i1 %40, label %41, label %49

41:                                               ; preds = %.lr.ph12
  %42 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %indvars.iv) #6
  %43 = getelementptr inbounds i8, ptr %42, i64 4
  %44 = load i32, ptr %43, align 4, !tbaa !15
  %45 = icmp eq i32 %44, 0
  br i1 %45, label %46, label %49

46:                                               ; preds = %41
  %47 = load i32, ptr %4, align 4, !tbaa !8
  %48 = add nsw i32 %47, 1
  store i32 %48, ptr %4, align 4, !tbaa !8
  br label %49

49:                                               ; preds = %.lr.ph12, %46, %41
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %50 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #6
  %sext = shl i64 %50, 32
  %51 = ashr exact i64 %sext, 32
  %52 = icmp slt i64 %indvars.iv.next, %51
  br i1 %52, label %.lr.ph12, label %._crit_edge13, !llvm.loop !16

53:                                               ; preds = %._crit_edge13
  %54 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %36, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %7 unwind label %.loopexit.split-lp, !llvm.loop !17

55:                                               ; preds = %17
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  ret i32 0

56:                                               ; preds = %.loopexit, %.loopexit.split-lp, %30
  %.pn = phi { ptr, i32 } [ %31, %30 ], [ %lpad.loopexit, %.loopexit ], [ %lpad.loopexit.split-lp, %.loopexit.split-lp ]
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  resume { ptr, i32 } %.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: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #3

declare i32 @__gxx_personality_v0(...)

; 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 nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #4

; 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 noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #3

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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 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 = { 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 = { "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 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #6 = { nounwind }

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

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!14, !9, i64 0}
!14 = !{!"_ZTSSt4pairIiiE", !9, i64 0, !9, i64 4}
!15 = !{!14, !9, i64 4}
!16 = distinct !{!16, !12}
!17 = distinct !{!17, !12}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass