; LLVM IR from Shah-Shishir/Codeforces-Solutions :: 1176A. Divide it! (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"

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

6:                                                ; preds = %46, %0
  %7 = load i32, ptr %2, align 4, !tbaa !5
  %8 = add nsw i32 %7, -1
  store i32 %8, ptr %2, align 4, !tbaa !5
  %9 = icmp ne i32 %7, 0
  br i1 %9, label %10, label %49

10:                                               ; preds = %6
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.2, ptr noundef %4)
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %12

12:                                               ; preds = %43, %10
  %13 = load i64, ptr %4, align 8, !tbaa !9
  %14 = icmp sgt i64 %13, 1
  br i1 %14, label %15, label %46

15:                                               ; preds = %12
  %16 = load i64, ptr %4, align 8, !tbaa !9
  %17 = srem i64 %16, 2
  %18 = icmp eq i64 %17, 0
  br i1 %18, label %19, label %22

19:                                               ; preds = %15
  %20 = load i64, ptr %4, align 8, !tbaa !9
  %21 = sdiv i64 %20, 2
  store i64 %21, ptr %4, align 8, !tbaa !9
  br label %43

22:                                               ; preds = %15
  %23 = load i64, ptr %4, align 8, !tbaa !9
  %24 = srem i64 %23, 3
  %25 = icmp eq i64 %24, 0
  br i1 %25, label %26, label %31

26:                                               ; preds = %22
  %27 = load i64, ptr %4, align 8, !tbaa !9
  %28 = sdiv i64 %27, 3
  store i64 %28, ptr %4, align 8, !tbaa !9
  %29 = load i64, ptr %4, align 8, !tbaa !9
  %30 = mul nsw i64 %29, 2
  store i64 %30, ptr %4, align 8, !tbaa !9
  br label %42

31:                                               ; preds = %22
  %32 = load i64, ptr %4, align 8, !tbaa !9
  %33 = srem i64 %32, 5
  %34 = icmp eq i64 %33, 0
  br i1 %34, label %35, label %40

35:                                               ; preds = %31
  %36 = load i64, ptr %4, align 8, !tbaa !9
  %37 = sdiv i64 %36, 5
  store i64 %37, ptr %4, align 8, !tbaa !9
  %38 = load i64, ptr %4, align 8, !tbaa !9
  %39 = mul nsw i64 %38, 4
  store i64 %39, ptr %4, align 8, !tbaa !9
  br label %41

40:                                               ; preds = %31
  store i32 -1, ptr %3, align 4, !tbaa !5
  br label %46

41:                                               ; preds = %35
  br label %42

42:                                               ; preds = %41, %26
  br label %43

43:                                               ; preds = %42, %19
  %44 = load i32, ptr %3, align 4, !tbaa !5
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %3, align 4, !tbaa !5
  br label %12, !llvm.loop !11

46:                                               ; preds = %40, %12
  %47 = load i32, ptr %3, align 4, !tbaa !5
  %48 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i32 noundef %47)
  br label %6, !llvm.loop !13

49:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 4, 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

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

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


; 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 [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.3 = 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 i32, align 4
  %2 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %4 = load i32, ptr %1, align 4, !tbaa !5
  %5 = add nsw i32 %4, -1
  store i32 %5, ptr %1, align 4, !tbaa !5
  %.not6 = icmp eq i32 %4, 0
  br i1 %.not6, label %._crit_edge9, label %.lr.ph8

.lr.ph8:                                          ; preds = %0, %._crit_edge
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.2, ptr noundef nonnull %2)
  %.promoted = load i64, ptr %2, align 8, !tbaa !9
  %7 = icmp sgt i64 %.promoted, 1
  br i1 %7, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %.lr.ph8, %25
  %.03 = phi i32 [ %27, %25 ], [ 0, %.lr.ph8 ]
  %8 = phi i64 [ %26, %25 ], [ %.promoted, %.lr.ph8 ]
  %9 = and i64 %8, 1
  %10 = icmp eq i64 %9, 0
  br i1 %10, label %11, label %13

11:                                               ; preds = %.lr.ph
  %12 = lshr exact i64 %8, 1
  store i64 %12, ptr %2, align 8, !tbaa !9
  br label %25

13:                                               ; preds = %.lr.ph
  %14 = urem i64 %8, 3
  %15 = udiv i64 %8, 3
  %16 = icmp eq i64 %14, 0
  br i1 %16, label %17, label %19

17:                                               ; preds = %13
  %18 = shl nuw nsw i64 %15, 1
  store i64 %18, ptr %2, align 8, !tbaa !9
  br label %25

19:                                               ; preds = %13
  %20 = urem i64 %8, 5
  %21 = udiv i64 %8, 5
  %22 = icmp eq i64 %20, 0
  br i1 %22, label %23, label %._crit_edge

23:                                               ; preds = %19
  %24 = shl nuw nsw i64 %21, 2
  store i64 %24, ptr %2, align 8, !tbaa !9
  br label %25

25:                                               ; preds = %17, %23, %11
  %26 = phi i64 [ %18, %17 ], [ %24, %23 ], [ %12, %11 ]
  %27 = add nuw nsw i32 %.03, 1
  %28 = icmp ugt i64 %26, 1
  br i1 %28, label %.lr.ph, label %._crit_edge, !llvm.loop !11

._crit_edge:                                      ; preds = %25, %19, %.lr.ph8
  %.1 = phi i32 [ 0, %.lr.ph8 ], [ -1, %19 ], [ %27, %25 ]
  %29 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i32 noundef %.1)
  %30 = load i32, ptr %1, align 4, !tbaa !5
  %31 = add nsw i32 %30, -1
  store i32 %31, ptr %1, align 4, !tbaa !5
  %.not = icmp eq i32 %30, 0
  br i1 %.not, label %._crit_edge9, label %.lr.ph8, !llvm.loop !13

._crit_edge9:                                     ; preds = %._crit_edge, %0
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  call void @llvm.lifetime.end.p0(i64 4, 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: nofree nounwind
declare noundef i32 @printf(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

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 = !{!"int", !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: DivRemPairsPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopInstSimplifyPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass