; LLVM IR from DionysiosB/CodeForces :: 1300-1399 (1362A-JohnnyAndAncientComputer)

; 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"

@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 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 i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %8

8:                                                ; preds = %75, %0
  %9 = load i64, ptr %2, align 8, !tbaa !5
  %10 = add nsw i64 %9, -1
  store i64 %10, ptr %2, align 8, !tbaa !5
  %11 = icmp ne i64 %9, 0
  br i1 %11, label %12, label %78

12:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %3, ptr noundef %4)
  %14 = load i64, ptr %3, align 8, !tbaa !9
  %15 = load i64, ptr %4, align 8, !tbaa !9
  %16 = icmp sgt i64 %14, %15
  br i1 %16, label %17, label %21

17:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %18 = load i64, ptr %3, align 8, !tbaa !9
  store i64 %18, ptr %5, align 8, !tbaa !9
  %19 = load i64, ptr %4, align 8, !tbaa !9
  store i64 %19, ptr %3, align 8, !tbaa !9
  %20 = load i64, ptr %5, align 8, !tbaa !9
  store i64 %20, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %21

21:                                               ; preds = %17, %12
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !11
  br label %22

22:                                               ; preds = %65, %21
  %23 = load i64, ptr %3, align 8, !tbaa !9
  %24 = load i64, ptr %4, align 8, !tbaa !9
  %25 = icmp slt i64 %23, %24
  br i1 %25, label %26, label %68

26:                                               ; preds = %22
  %27 = load i64, ptr %4, align 8, !tbaa !9
  %28 = srem i64 %27, 8
  %29 = icmp eq i64 %28, 0
  br i1 %29, label %30, label %38

30:                                               ; preds = %26
  %31 = load i64, ptr %4, align 8, !tbaa !9
  %32 = sdiv i64 %31, 8
  %33 = load i64, ptr %3, align 8, !tbaa !9
  %34 = icmp sge i64 %32, %33
  br i1 %34, label %35, label %38

35:                                               ; preds = %30
  %36 = load i64, ptr %4, align 8, !tbaa !9
  %37 = sdiv i64 %36, 8
  store i64 %37, ptr %4, align 8, !tbaa !9
  br label %65

38:                                               ; preds = %30, %26
  %39 = load i64, ptr %4, align 8, !tbaa !9
  %40 = srem i64 %39, 4
  %41 = icmp eq i64 %40, 0
  br i1 %41, label %42, label %50

42:                                               ; preds = %38
  %43 = load i64, ptr %4, align 8, !tbaa !9
  %44 = sdiv i64 %43, 4
  %45 = load i64, ptr %3, align 8, !tbaa !9
  %46 = icmp sge i64 %44, %45
  br i1 %46, label %47, label %50

47:                                               ; preds = %42
  %48 = load i64, ptr %4, align 8, !tbaa !9
  %49 = sdiv i64 %48, 4
  store i64 %49, ptr %4, align 8, !tbaa !9
  br label %64

50:                                               ; preds = %42, %38
  %51 = load i64, ptr %4, align 8, !tbaa !9
  %52 = srem i64 %51, 2
  %53 = icmp eq i64 %52, 0
  br i1 %53, label %54, label %62

54:                                               ; preds = %50
  %55 = load i64, ptr %4, align 8, !tbaa !9
  %56 = sdiv i64 %55, 2
  %57 = load i64, ptr %3, align 8, !tbaa !9
  %58 = icmp sge i64 %56, %57
  br i1 %58, label %59, label %62

59:                                               ; preds = %54
  %60 = load i64, ptr %4, align 8, !tbaa !9
  %61 = sdiv i64 %60, 2
  store i64 %61, ptr %4, align 8, !tbaa !9
  br label %63

62:                                               ; preds = %54, %50
  br label %68

63:                                               ; preds = %59
  br label %64

64:                                               ; preds = %63, %47
  br label %65

65:                                               ; preds = %64, %35
  %66 = load i32, ptr %6, align 4, !tbaa !11
  %67 = add nsw i32 %66, 1
  store i32 %67, ptr %6, align 4, !tbaa !11
  br label %22, !llvm.loop !13

68:                                               ; preds = %62, %22
  %69 = load i64, ptr %3, align 8, !tbaa !9
  %70 = load i64, ptr %4, align 8, !tbaa !9
  %71 = icmp eq i64 %69, %70
  br i1 %71, label %72, label %74

72:                                               ; preds = %68
  %73 = load i32, ptr %6, align 4, !tbaa !11
  br label %75

74:                                               ; preds = %68
  br label %75

75:                                               ; preds = %74, %72
  %76 = phi i32 [ %73, %72 ], [ -1, %74 ]
  %77 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %76)
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  br label %8, !llvm.loop !15

78:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  ret i32 0
}

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

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

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

declare i32 @printf(ptr noundef, ...) #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 = { "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 = { 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !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"

@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress nofree norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %5 = load i64, ptr %1, align 8, !tbaa !5
  %6 = add nsw i64 %5, -1
  store i64 %6, ptr %1, align 8, !tbaa !5
  %.not25 = icmp eq i64 %5, 0
  br i1 %.not25, label %._crit_edge28, label %.lr.ph27

.lr.ph27:                                         ; preds = %0, %._crit_edge
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %8 = load i64, ptr %2, align 8, !tbaa !9
  %9 = load i64, ptr %3, align 8, !tbaa !9
  %10 = icmp sgt i64 %8, %9
  br i1 %10, label %11, label %12

11:                                               ; preds = %.lr.ph27
  store i64 %9, ptr %2, align 8, !tbaa !9
  store i64 %8, ptr %3, align 8, !tbaa !9
  br label %12

12:                                               ; preds = %11, %.lr.ph27
  %.promoted = phi i64 [ %8, %11 ], [ %9, %.lr.ph27 ]
  %13 = phi i64 [ %9, %11 ], [ %8, %.lr.ph27 ]
  %14 = icmp slt i64 %13, %.promoted
  br i1 %14, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %12, %33
  %.014 = phi i32 [ %35, %33 ], [ 0, %12 ]
  %15 = phi i64 [ %34, %33 ], [ %.promoted, %12 ]
  %16 = and i64 %15, 7
  %17 = icmp eq i64 %16, 0
  br i1 %17, label %18, label %21

18:                                               ; preds = %.lr.ph
  %19 = ashr exact i64 %15, 3
  %.not10 = icmp slt i64 %19, %13
  br i1 %.not10, label %21, label %20

20:                                               ; preds = %18
  store i64 %19, ptr %3, align 8, !tbaa !9
  br label %33

21:                                               ; preds = %18, %.lr.ph
  %22 = and i64 %15, 3
  %23 = icmp eq i64 %22, 0
  br i1 %23, label %24, label %27

24:                                               ; preds = %21
  %25 = ashr exact i64 %15, 2
  %.not11 = icmp slt i64 %25, %13
  br i1 %.not11, label %27, label %26

26:                                               ; preds = %24
  store i64 %25, ptr %3, align 8, !tbaa !9
  br label %33

27:                                               ; preds = %24, %21
  %28 = and i64 %15, 1
  %29 = icmp eq i64 %28, 0
  br i1 %29, label %30, label %._crit_edge

30:                                               ; preds = %27
  %31 = ashr exact i64 %15, 1
  %.not12 = icmp slt i64 %31, %13
  br i1 %.not12, label %._crit_edge, label %32

32:                                               ; preds = %30
  store i64 %31, ptr %3, align 8, !tbaa !9
  br label %33

33:                                               ; preds = %26, %32, %20
  %34 = phi i64 [ %25, %26 ], [ %31, %32 ], [ %19, %20 ]
  %35 = add nuw nsw i32 %.014, 1
  %36 = icmp slt i64 %13, %34
  br i1 %36, label %.lr.ph, label %._crit_edge, !llvm.loop !11

._crit_edge:                                      ; preds = %33, %30, %27, %12
  %.0.lcssa = phi i32 [ 0, %12 ], [ %.014, %27 ], [ %.014, %30 ], [ %35, %33 ]
  %.lcssa = phi i64 [ %.promoted, %12 ], [ %15, %27 ], [ %15, %30 ], [ %34, %33 ]
  %37 = icmp eq i64 %13, %.lcssa
  %38 = select i1 %37, i32 %.0.lcssa, i32 -1
  %39 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %38)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %40 = load i64, ptr %1, align 8, !tbaa !5
  %41 = add nsw i64 %40, -1
  store i64 %41, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %40, 0
  br i1 %.not, label %._crit_edge28, label %.lr.ph27, !llvm.loop !13

._crit_edge28:                                    ; preds = %._crit_edge, %0
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #3
  ret i32 0
}

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

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

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

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

attributes #0 = { mustprogress nofree norecurse 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nofree nounwind "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 = { 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


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