; LLVM IR from eyangch/competitive-programming :: Codeforces/1392 (e)

; 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" }

@N = external dso_local global i64, align 8
@Q = external dso_local global i64, align 8
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = 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 i64, align 8
  %3 = alloca i32, align 4
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  %9 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %10 = getelementptr i8, ptr %9, i64 -24
  %11 = load i64, ptr %10, align 8
  %12 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %11
  %13 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %12, ptr noundef null)
  %14 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %15 = 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 %16

16:                                               ; preds = %47, %0
  %17 = load i64, ptr %2, align 8, !tbaa !8
  %18 = load i64, ptr @N, align 8, !tbaa !8
  %19 = icmp slt i64 %17, %18
  br i1 %19, label %21, label %20

20:                                               ; preds = %16
  store i32 2, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  br label %50

21:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #6
  store i64 0, ptr %4, align 8, !tbaa !8
  br label %22

22:                                               ; preds = %42, %21
  %23 = load i64, ptr %4, align 8, !tbaa !8
  %24 = load i64, ptr @N, align 8, !tbaa !8
  %25 = icmp slt i64 %23, %24
  br i1 %25, label %27, label %26

26:                                               ; preds = %22
  store i32 5, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #6
  br label %45

27:                                               ; preds = %22
  %28 = load i64, ptr %2, align 8, !tbaa !8
  %29 = srem i64 %28, 2
  %30 = icmp ne i64 %29, 0
  br i1 %30, label %31, label %37

31:                                               ; preds = %27
  %32 = load i64, ptr %2, align 8, !tbaa !8
  %33 = load i64, ptr %4, align 8, !tbaa !8
  %34 = add nsw i64 %32, %33
  %35 = sub nsw i64 %34, 1
  %36 = shl i64 1, %35
  br label %38

37:                                               ; preds = %27
  br label %38

38:                                               ; preds = %37, %31
  %39 = phi i64 [ %36, %31 ], [ 0, %37 ]
  %40 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %39)
  %41 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %40, ptr noundef @.str)
  br label %42

42:                                               ; preds = %38
  %43 = load i64, ptr %4, align 8, !tbaa !8
  %44 = add nsw i64 %43, 1
  store i64 %44, ptr %4, align 8, !tbaa !8
  br label %22, !llvm.loop !11

45:                                               ; preds = %26
  %46 = 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 %47

47:                                               ; preds = %45
  %48 = load i64, ptr %2, align 8, !tbaa !8
  %49 = add nsw i64 %48, 1
  store i64 %49, ptr %2, align 8, !tbaa !8
  br label %16, !llvm.loop !13

50:                                               ; preds = %20
  %51 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSo5flushEv(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout)
  %52 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) @Q)
  br label %53

53:                                               ; preds = %92, %50
  %54 = load i64, ptr @Q, align 8, !tbaa !8
  %55 = add nsw i64 %54, -1
  store i64 %55, ptr @Q, align 8, !tbaa !8
  %56 = icmp ne i64 %54, 0
  br i1 %56, label %57, label %94

57:                                               ; preds = %53
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #6
  %58 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %5)
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #6
  store i64 0, ptr %6, align 8, !tbaa !8
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #6
  store i64 0, ptr %7, align 8, !tbaa !8
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #6
  store i64 0, ptr %8, align 8, !tbaa !8
  br label %59

59:                                               ; preds = %89, %57
  %60 = load i64, ptr %8, align 8, !tbaa !8
  %61 = load i64, ptr @N, align 8, !tbaa !8
  %62 = mul nsw i64 2, %61
  %63 = sub nsw i64 %62, 1
  %64 = icmp slt i64 %60, %63
  br i1 %64, label %66, label %65

65:                                               ; preds = %59
  store i32 10, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #6
  br label %92

66:                                               ; preds = %59
  %67 = load i64, ptr %6, align 8, !tbaa !8
  %68 = add nsw i64 %67, 1
  %69 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %68)
  %70 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %69, ptr noundef @.str)
  %71 = load i64, ptr %7, align 8, !tbaa !8
  %72 = add nsw i64 %71, 1
  %73 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) %70, i64 noundef %72)
  %74 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) %73, i8 noundef signext 10)
  %75 = load i64, ptr %5, align 8, !tbaa !8
  %76 = and i64 %75, 1
  %77 = load i64, ptr %6, align 8, !tbaa !8
  %78 = srem i64 %77, 2
  %79 = icmp eq i64 %76, %78
  br i1 %79, label %80, label %83

80:                                               ; preds = %66
  %81 = load i64, ptr %7, align 8, !tbaa !8
  %82 = add nsw i64 %81, 1
  store i64 %82, ptr %7, align 8, !tbaa !8
  br label %86

83:                                               ; preds = %66
  %84 = load i64, ptr %6, align 8, !tbaa !8
  %85 = add nsw i64 %84, 1
  store i64 %85, ptr %6, align 8, !tbaa !8
  br label %86

86:                                               ; preds = %83, %80
  %87 = load i64, ptr %5, align 8, !tbaa !8
  %88 = ashr i64 %87, 1
  store i64 %88, ptr %5, align 8, !tbaa !8
  br label %89

89:                                               ; preds = %86
  %90 = load i64, ptr %8, align 8, !tbaa !8
  %91 = add nsw i64 %90, 1
  store i64 %91, ptr %8, align 8, !tbaa !8
  br label %59, !llvm.loop !14

92:                                               ; preds = %65
  %93 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSo5flushEv(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout)
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  br label %53, !llvm.loop !15

94:                                               ; preds = %53
  %95 = load i32, ptr %1, align 4
  ret i32 %95
}

; 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: 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

; 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

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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) #5

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSo5flushEv(ptr noundef nonnull align 8 dereferenceable(8)) #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" }

@N = external dso_local global i64, align 8
@Q = external dso_local global i64, align 8
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = 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 i64, align 8
  %2 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %3 = getelementptr i8, ptr %2, i64 -24
  %4 = load i64, ptr %3, align 8
  %5 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %4
  %6 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %5, ptr noundef null)
  %7 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %8 = 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)
  %9 = load i64, ptr @N, align 8, !tbaa !8
  %10 = icmp sgt i64 %9, 0
  br i1 %10, label %.preheader, label %._crit_edge23

.preheader:                                       ; preds = %0, %._crit_edge
  %11 = phi i64 [ %26, %._crit_edge ], [ %9, %0 ]
  %.01922 = phi i64 [ %25, %._crit_edge ], [ 0, %0 ]
  %12 = icmp sgt i64 %11, 0
  br i1 %12, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %.preheader
  %13 = and i64 %.01922, 1
  %.not20 = icmp eq i64 %13, 0
  %14 = add nsw i64 %.01922, -1
  br i1 %.not20, label %.lr.ph.split.us, label %.lr.ph.split

.lr.ph.split.us:                                  ; preds = %.lr.ph, %.lr.ph.split.us
  %.01821.us = phi i64 [ %17, %.lr.ph.split.us ], [ 0, %.lr.ph ]
  %15 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef 0)
  %16 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %15, ptr noundef nonnull @.str)
  %17 = add nuw nsw i64 %.01821.us, 1
  %18 = load i64, ptr @N, align 8, !tbaa !8
  %19 = icmp slt i64 %17, %18
  br i1 %19, label %.lr.ph.split.us, label %._crit_edge, !llvm.loop !11

._crit_edge23:                                    ; preds = %._crit_edge, %0
  %20 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSo5flushEv(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout)
  %21 = 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) @Q)
  %22 = load i64, ptr @Q, align 8, !tbaa !8
  %23 = add nsw i64 %22, -1
  store i64 %23, ptr @Q, align 8, !tbaa !8
  %.not30 = icmp eq i64 %22, 0
  br i1 %.not30, label %._crit_edge33, label %.lr.ph32

._crit_edge:                                      ; preds = %.lr.ph.split, %.lr.ph.split.us, %.preheader
  %24 = 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)
  %25 = add nuw nsw i64 %.01922, 1
  %26 = load i64, ptr @N, align 8, !tbaa !8
  %27 = icmp slt i64 %25, %26
  br i1 %27, label %.preheader, label %._crit_edge23, !llvm.loop !13

.lr.ph.split:                                     ; preds = %.lr.ph, %.lr.ph.split
  %.01821 = phi i64 [ %32, %.lr.ph.split ], [ 0, %.lr.ph ]
  %28 = add nuw i64 %14, %.01821
  %29 = shl nuw i64 1, %28
  %30 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %29)
  %31 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %30, ptr noundef nonnull @.str)
  %32 = add nuw nsw i64 %.01821, 1
  %33 = load i64, ptr @N, align 8, !tbaa !8
  %34 = icmp slt i64 %32, %33
  br i1 %34, label %.lr.ph.split, label %._crit_edge, !llvm.loop !11

.lr.ph32:                                         ; preds = %._crit_edge23, %._crit_edge29
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #6
  %35 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %1)
  %36 = load i64, ptr @N, align 8, !tbaa !8
  %37 = icmp sgt i64 %36, 0
  br i1 %37, label %.lr.ph28, label %._crit_edge29

._crit_edge29:                                    ; preds = %.lr.ph28, %.lr.ph32
  %38 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSo5flushEv(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #6
  %39 = load i64, ptr @Q, align 8, !tbaa !8
  %40 = add nsw i64 %39, -1
  store i64 %40, ptr @Q, align 8, !tbaa !8
  %.not = icmp eq i64 %39, 0
  br i1 %.not, label %._crit_edge33, label %.lr.ph32, !llvm.loop !14

.lr.ph28:                                         ; preds = %.lr.ph32, %.lr.ph28
  %.026 = phi i64 [ %52, %.lr.ph28 ], [ 0, %.lr.ph32 ]
  %.01525 = phi i64 [ %..015, %.lr.ph28 ], [ 0, %.lr.ph32 ]
  %.01624 = phi i64 [ %.016., %.lr.ph28 ], [ 0, %.lr.ph32 ]
  %41 = add nsw i64 %.01624, 1
  %42 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %41)
  %43 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %42, ptr noundef nonnull @.str)
  %44 = add nsw i64 %.01525, 1
  %45 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) %43, i64 noundef %44)
  %46 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) %45, i8 noundef signext 10)
  %47 = load i64, ptr %1, align 8, !tbaa !8
  %48 = and i64 %47, 1
  %49 = srem i64 %.01624, 2
  %50 = icmp eq i64 %48, %49
  %.016. = select i1 %50, i64 %.01624, i64 %41
  %..015 = select i1 %50, i64 %44, i64 %.01525
  %51 = ashr i64 %47, 1
  store i64 %51, ptr %1, align 8, !tbaa !8
  %52 = add nuw nsw i64 %.026, 1
  %53 = load i64, ptr @N, align 8, !tbaa !8
  %54 = shl nsw i64 %53, 1
  %55 = add nsw i64 %54, -1
  %56 = icmp slt i64 %52, %55
  br i1 %56, label %.lr.ph28, label %._crit_edge29, !llvm.loop !15

._crit_edge33:                                    ; preds = %._crit_edge29, %._crit_edge23
  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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #4

; 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

; 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

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 #5

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSo5flushEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #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 = { mustprogress 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}


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