; LLVM IR from eyangch/competitive-programming :: Codeforces/1746 (c)

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

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%class.anon = type { i8 }

@T = external dso_local global i64, align 8
@N = external dso_local global i64, align 8
@A = external dso_local global [100000 x i64], align 16
@D = external dso_local global [100000 x i64], align 16
@I = external dso_local global [100000 x i64], align 16
@_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 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca %class.anon, align 1
  %5 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  %6 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %7 = getelementptr i8, ptr %6, i64 -24
  %8 = load i64, ptr %7, align 8
  %9 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %8
  %10 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %9, ptr noundef null)
  %11 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %12 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) @T)
  br label %13

13:                                               ; preds = %77, %0
  %14 = load i64, ptr @T, align 8, !tbaa !8
  %15 = add nsw i64 %14, -1
  store i64 %15, ptr @T, align 8, !tbaa !8
  %16 = icmp ne i64 %14, 0
  br i1 %16, label %17, label %79

17:                                               ; preds = %13
  %18 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) @N)
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #6
  store i64 0, ptr %2, align 8, !tbaa !8
  br label %19

19:                                               ; preds = %28, %17
  %20 = load i64, ptr %2, align 8, !tbaa !8
  %21 = load i64, ptr @N, align 8, !tbaa !8
  %22 = icmp slt i64 %20, %21
  br i1 %22, label %24, label %23

23:                                               ; preds = %19
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  br label %31

24:                                               ; preds = %19
  %25 = load i64, ptr %2, align 8, !tbaa !8
  %26 = getelementptr inbounds [100000 x i64], ptr @A, i64 0, i64 %25
  %27 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %26)
  br label %28

28:                                               ; preds = %24
  %29 = load i64, ptr %2, align 8, !tbaa !8
  %30 = add nsw i64 %29, 1
  store i64 %30, ptr %2, align 8, !tbaa !8
  br label %19, !llvm.loop !11

31:                                               ; preds = %23
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #6
  store i64 0, ptr %3, align 8, !tbaa !8
  br label %32

32:                                               ; preds = %49, %31
  %33 = load i64, ptr %3, align 8, !tbaa !8
  %34 = load i64, ptr @N, align 8, !tbaa !8
  %35 = sub nsw i64 %34, 1
  %36 = icmp slt i64 %33, %35
  br i1 %36, label %38, label %37

37:                                               ; preds = %32
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #6
  br label %52

38:                                               ; preds = %32
  %39 = load i64, ptr %3, align 8, !tbaa !8
  %40 = getelementptr inbounds [100000 x i64], ptr @A, i64 0, i64 %39
  %41 = load i64, ptr %40, align 8, !tbaa !8
  %42 = load i64, ptr %3, align 8, !tbaa !8
  %43 = add nsw i64 %42, 1
  %44 = getelementptr inbounds [100000 x i64], ptr @A, i64 0, i64 %43
  %45 = load i64, ptr %44, align 8, !tbaa !8
  %46 = sub nsw i64 %41, %45
  %47 = load i64, ptr %3, align 8, !tbaa !8
  %48 = getelementptr inbounds [100000 x i64], ptr @D, i64 0, i64 %47
  store i64 %46, ptr %48, align 8, !tbaa !8
  br label %49

49:                                               ; preds = %38
  %50 = load i64, ptr %3, align 8, !tbaa !8
  %51 = add nsw i64 %50, 1
  store i64 %51, ptr %3, align 8, !tbaa !8
  br label %32, !llvm.loop !13

52:                                               ; preds = %37
  %53 = load i64, ptr @N, align 8, !tbaa !8
  %54 = getelementptr inbounds i64, ptr @I, i64 %53
  %55 = getelementptr inbounds i64, ptr %54, i64 -1
  call void @_ZSt4iotaIPxiEvT_S1_T0_(ptr noundef @I, ptr noundef %55, i32 noundef 0)
  %56 = load i64, ptr @N, align 8, !tbaa !8
  %57 = getelementptr inbounds i64, ptr @I, i64 %56
  %58 = getelementptr inbounds i64, ptr %57, i64 -1
  call void @"_ZSt4sortIPxZ4mainE3$_0EvT_S2_T0_"(ptr noundef @I, ptr noundef %58)
  %59 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef 1)
  %60 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) %59, i8 noundef signext 32)
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #6
  store i64 0, ptr %5, align 8, !tbaa !8
  br label %61

61:                                               ; preds = %74, %52
  %62 = load i64, ptr %5, align 8, !tbaa !8
  %63 = load i64, ptr @N, align 8, !tbaa !8
  %64 = sub nsw i64 %63, 1
  %65 = icmp slt i64 %62, %64
  br i1 %65, label %67, label %66

66:                                               ; preds = %61
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  br label %77

67:                                               ; preds = %61
  %68 = load i64, ptr %5, align 8, !tbaa !8
  %69 = getelementptr inbounds [100000 x i64], ptr @I, i64 0, i64 %68
  %70 = load i64, ptr %69, align 8, !tbaa !8
  %71 = add nsw i64 %70, 2
  %72 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %71)
  %73 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) %72, i8 noundef signext 32)
  br label %74

74:                                               ; preds = %67
  %75 = load i64, ptr %5, align 8, !tbaa !8
  %76 = add nsw i64 %75, 1
  store i64 %76, ptr %5, align 8, !tbaa !8
  br label %61, !llvm.loop !14

77:                                               ; preds = %66
  %78 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i8 noundef signext 10)
  br label %13, !llvm.loop !15

79:                                               ; preds = %13
  %80 = load i32, ptr %1, align 4
  ret i32 %80
}

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

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

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) #3 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #4

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZSt4iotaIPxiEvT_S1_T0_(ptr noundef, ptr noundef, i32 noundef) #1

; Function Attrs: inlinehint mustprogress uwtable
declare hidden void @"_ZSt4sortIPxZ4mainE3$_0EvT_S2_T0_"(ptr noundef, ptr noundef) #5

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

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

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #3 align 2

attributes #0 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"long long", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !12}
!15 = distinct !{!15, !12}


; 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" }

@T = external dso_local global i64, align 8
@N = external dso_local global i64, align 8
@A = external dso_local global [100000 x i64], align 16
@D = external dso_local local_unnamed_addr global [100000 x i64], align 16
@I = external dso_local global [100000 x i64], align 16
@_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 {
  %1 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %2 = getelementptr i8, ptr %1, i64 -24
  %3 = load i64, ptr %2, align 8
  %4 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %3
  %5 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %4, ptr noundef null)
  %6 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %7 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) @T)
  %8 = load i64, ptr @T, align 8, !tbaa !8
  %9 = add nsw i64 %8, -1
  store i64 %9, ptr @T, align 8, !tbaa !8
  %.not22 = icmp eq i64 %8, 0
  br i1 %.not22, label %._crit_edge25, label %.lr.ph24

.lr.ph24:                                         ; preds = %0, %._crit_edge20
  %10 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) @N)
  %11 = load i64, ptr @N, align 8, !tbaa !8
  %12 = icmp sgt i64 %11, 0
  br i1 %12, label %.lr.ph, label %._crit_edge

.preheader:                                       ; preds = %.lr.ph
  %13 = icmp sgt i64 %29, 1
  br i1 %13, label %.lr.ph16.preheader, label %._crit_edge

.lr.ph16.preheader:                               ; preds = %.preheader
  %.pre = load i64, ptr @A, align 16, !tbaa !8
  %14 = add nsw i64 %29, -2
  %15 = add nsw i64 %29, -1
  %min.iters.check = icmp ult i64 %29, 5
  br i1 %min.iters.check, label %.lr.ph16.preheader30, label %vector.ph

.lr.ph16.preheader30:                             ; preds = %middle.block, %.lr.ph16.preheader
  %.ph = phi i64 [ %.pre, %.lr.ph16.preheader ], [ %vector.recur.extract, %middle.block ]
  %.01215.ph = phi i64 [ 0, %.lr.ph16.preheader ], [ %n.vec, %middle.block ]
  br label %.lr.ph16

vector.ph:                                        ; preds = %.lr.ph16.preheader
  %n.vec = and i64 %15, -4
  %vector.recur.init = insertelement <2 x i64> poison, i64 %.pre, i64 1
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %vector.recur = phi <2 x i64> [ %vector.recur.init, %vector.ph ], [ %wide.load29, %vector.body ]
  %16 = or disjoint i64 %index, 1
  %17 = getelementptr inbounds [100000 x i64], ptr @A, i64 0, i64 %16
  %18 = getelementptr inbounds i8, ptr %17, i64 16
  %wide.load = load <2 x i64>, ptr %17, align 8, !tbaa !8
  %wide.load29 = load <2 x i64>, ptr %18, align 8, !tbaa !8
  %19 = shufflevector <2 x i64> %vector.recur, <2 x i64> %wide.load, <2 x i32> <i32 1, i32 2>
  %20 = shufflevector <2 x i64> %wide.load, <2 x i64> %wide.load29, <2 x i32> <i32 1, i32 2>
  %21 = sub nsw <2 x i64> %19, %wide.load
  %22 = sub nsw <2 x i64> %20, %wide.load29
  %23 = getelementptr inbounds [100000 x i64], ptr @D, i64 0, i64 %index
  %24 = getelementptr inbounds i8, ptr %23, i64 16
  store <2 x i64> %21, ptr %23, align 16, !tbaa !8
  store <2 x i64> %22, ptr %24, align 16, !tbaa !8
  %index.next = add nuw i64 %index, 4
  %25 = icmp eq i64 %index.next, %n.vec
  br i1 %25, label %middle.block, label %vector.body, !llvm.loop !11

middle.block:                                     ; preds = %vector.body
  %vector.recur.extract = extractelement <2 x i64> %wide.load29, i64 1
  %cmp.n = icmp eq i64 %15, %n.vec
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph16.preheader30

.lr.ph:                                           ; preds = %.lr.ph24, %.lr.ph
  %.01314 = phi i64 [ %28, %.lr.ph ], [ 0, %.lr.ph24 ]
  %26 = getelementptr inbounds [100000 x i64], ptr @A, i64 0, i64 %.01314
  %27 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %26)
  %28 = add nuw nsw i64 %.01314, 1
  %29 = load i64, ptr @N, align 8, !tbaa !8
  %30 = icmp slt i64 %28, %29
  br i1 %30, label %.lr.ph, label %.preheader, !llvm.loop !15

._crit_edge:                                      ; preds = %.lr.ph16, %middle.block, %.lr.ph24, %.preheader
  %.lcssa28 = phi i64 [ %29, %.preheader ], [ %11, %.lr.ph24 ], [ %29, %middle.block ], [ %29, %.lr.ph16 ]
  %gep = getelementptr i64, ptr getelementptr (i8, ptr @I, i64 -8), i64 %.lcssa28
  tail call void @_ZSt4iotaIPxiEvT_S1_T0_(ptr noundef nonnull @I, ptr noundef nonnull %gep, i32 noundef 0)
  %31 = load i64, ptr @N, align 8, !tbaa !8
  %gep21 = getelementptr i64, ptr getelementptr (i8, ptr @I, i64 -8), i64 %31
  tail call void @"_ZSt4sortIPxZ4mainE3$_0EvT_S2_T0_"(ptr noundef nonnull @I, ptr noundef nonnull %gep21)
  %32 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef 1)
  %33 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) %32, i8 noundef signext 32)
  %34 = load i64, ptr @N, align 8, !tbaa !8
  %35 = icmp sgt i64 %34, 1
  br i1 %35, label %.lr.ph19, label %._crit_edge20

.lr.ph16:                                         ; preds = %.lr.ph16.preheader30, %.lr.ph16
  %36 = phi i64 [ %39, %.lr.ph16 ], [ %.ph, %.lr.ph16.preheader30 ]
  %.01215 = phi i64 [ %37, %.lr.ph16 ], [ %.01215.ph, %.lr.ph16.preheader30 ]
  %37 = add nuw nsw i64 %.01215, 1
  %38 = getelementptr inbounds [100000 x i64], ptr @A, i64 0, i64 %37
  %39 = load i64, ptr %38, align 8, !tbaa !8
  %40 = sub nsw i64 %36, %39
  %41 = getelementptr inbounds [100000 x i64], ptr @D, i64 0, i64 %.01215
  store i64 %40, ptr %41, align 8, !tbaa !8
  %exitcond.not = icmp eq i64 %.01215, %14
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph16, !llvm.loop !16

._crit_edge20:                                    ; preds = %.lr.ph19, %._crit_edge
  %42 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i8 noundef signext 10)
  %43 = load i64, ptr @T, align 8, !tbaa !8
  %44 = add nsw i64 %43, -1
  store i64 %44, ptr @T, align 8, !tbaa !8
  %.not = icmp eq i64 %43, 0
  br i1 %.not, label %._crit_edge25, label %.lr.ph24, !llvm.loop !17

.lr.ph19:                                         ; preds = %._crit_edge, %.lr.ph19
  %.017 = phi i64 [ %50, %.lr.ph19 ], [ 0, %._crit_edge ]
  %45 = getelementptr inbounds [100000 x i64], ptr @I, i64 0, i64 %.017
  %46 = load i64, ptr %45, align 8, !tbaa !8
  %47 = add nsw i64 %46, 2
  %48 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %47)
  %49 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) %48, i8 noundef signext 32)
  %50 = add nuw nsw i64 %.017, 1
  %51 = load i64, ptr @N, align 8, !tbaa !8
  %52 = add nsw i64 %51, -1
  %53 = icmp slt i64 %50, %52
  br i1 %53, label %.lr.ph19, label %._crit_edge20, !llvm.loop !18

._crit_edge25:                                    ; preds = %._crit_edge20, %0
  ret i32 0
}

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

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

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZSt4iotaIPxiEvT_S1_T0_(ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: inlinehint mustprogress uwtable
declare hidden void @"_ZSt4sortIPxZ4mainE3$_0EvT_S2_T0_"(ptr noundef, ptr noundef) local_unnamed_addr #4

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8), i8 noundef signext) local_unnamed_addr #4

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

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) local_unnamed_addr #3 align 2

attributes #0 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress 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 = { 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" }

!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 = !{!"long long", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12, !13, !14}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!"llvm.loop.isvectorized", i32 1}
!14 = !{!"llvm.loop.unroll.runtime.disable"}
!15 = distinct !{!15, !12}
!16 = distinct !{!16, !12, !14, !13}
!17 = distinct !{!17, !12}
!18 = distinct !{!18, !12}


; Effective O3 passes: BDCEPass,CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,SROAPass,SimplifyCFGPass,TailCallElimPass