; LLVM IR from DionysiosB/CodeForces :: 1400-1499 (1430A-NumberOfApartments)

; 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 [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [13 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 i32, align 4
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %9

9:                                                ; preds = %75, %73, %0
  %10 = load i64, ptr %2, align 8, !tbaa !5
  %11 = add nsw i64 %10, -1
  store i64 %11, ptr %2, align 8, !tbaa !5
  %12 = icmp ne i64 %10, 0
  br i1 %12, label %13, label %76

13:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  %15 = load i64, ptr %3, align 8, !tbaa !5
  %16 = icmp eq i64 %15, 1
  br i1 %16, label %23, label %17

17:                                               ; preds = %13
  %18 = load i64, ptr %3, align 8, !tbaa !5
  %19 = icmp eq i64 %18, 2
  br i1 %19, label %23, label %20

20:                                               ; preds = %17
  %21 = load i64, ptr %3, align 8, !tbaa !5
  %22 = icmp eq i64 %21, 4
  br i1 %22, label %23, label %25

23:                                               ; preds = %20, %17, %13
  %24 = call i32 @puts(ptr noundef @.str.1)
  store i32 2, ptr %4, align 4
  br label %73, !llvm.loop !9

25:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store i64 0, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 0, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %26 = load i64, ptr %3, align 8, !tbaa !5
  %27 = sdiv i64 %26, 7
  store i64 %27, ptr %7, align 8, !tbaa !5
  %28 = load i64, ptr %3, align 8, !tbaa !5
  %29 = srem i64 %28, 7
  %30 = icmp eq i64 %29, 1
  br i1 %30, label %31, label %34

31:                                               ; preds = %25
  %32 = load i64, ptr %7, align 8, !tbaa !5
  %33 = add nsw i64 %32, -1
  store i64 %33, ptr %7, align 8, !tbaa !5
  store i64 1, ptr %6, align 8, !tbaa !5
  store i64 1, ptr %5, align 8, !tbaa !5
  br label %68

34:                                               ; preds = %25
  %35 = load i64, ptr %3, align 8, !tbaa !5
  %36 = srem i64 %35, 7
  %37 = icmp eq i64 %36, 2
  br i1 %37, label %38, label %41

38:                                               ; preds = %34
  %39 = load i64, ptr %7, align 8, !tbaa !5
  %40 = add nsw i64 %39, -1
  store i64 %40, ptr %7, align 8, !tbaa !5
  store i64 3, ptr %5, align 8, !tbaa !5
  br label %67

41:                                               ; preds = %34
  %42 = load i64, ptr %3, align 8, !tbaa !5
  %43 = srem i64 %42, 7
  %44 = icmp eq i64 %43, 3
  br i1 %44, label %45, label %46

45:                                               ; preds = %41
  store i64 1, ptr %5, align 8, !tbaa !5
  br label %66

46:                                               ; preds = %41
  %47 = load i64, ptr %3, align 8, !tbaa !5
  %48 = srem i64 %47, 7
  %49 = icmp eq i64 %48, 4
  br i1 %49, label %50, label %53

50:                                               ; preds = %46
  %51 = load i64, ptr %7, align 8, !tbaa !5
  %52 = add nsw i64 %51, -1
  store i64 %52, ptr %7, align 8, !tbaa !5
  store i64 2, ptr %5, align 8, !tbaa !5
  store i64 1, ptr %6, align 8, !tbaa !5
  br label %65

53:                                               ; preds = %46
  %54 = load i64, ptr %3, align 8, !tbaa !5
  %55 = srem i64 %54, 7
  %56 = icmp eq i64 %55, 5
  br i1 %56, label %57, label %58

57:                                               ; preds = %53
  store i64 1, ptr %6, align 8, !tbaa !5
  br label %64

58:                                               ; preds = %53
  %59 = load i64, ptr %3, align 8, !tbaa !5
  %60 = srem i64 %59, 7
  %61 = icmp eq i64 %60, 6
  br i1 %61, label %62, label %63

62:                                               ; preds = %58
  store i64 2, ptr %5, align 8, !tbaa !5
  br label %63

63:                                               ; preds = %62, %58
  br label %64

64:                                               ; preds = %63, %57
  br label %65

65:                                               ; preds = %64, %50
  br label %66

66:                                               ; preds = %65, %45
  br label %67

67:                                               ; preds = %66, %38
  br label %68

68:                                               ; preds = %67, %31
  %69 = load i64, ptr %5, align 8, !tbaa !5
  %70 = load i64, ptr %6, align 8, !tbaa !5
  %71 = load i64, ptr %7, align 8, !tbaa !5
  %72 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i64 noundef %69, i64 noundef %70, i64 noundef %71)
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  store i32 0, ptr %4, align 4
  br label %73

73:                                               ; preds = %68, %23
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  %74 = load i32, ptr %4, align 4
  switch i32 %74, label %78 [
    i32 0, label %75
    i32 2, label %9
  ]

75:                                               ; preds = %73
  br label %9, !llvm.loop !9

76:                                               ; preds = %9
  store i32 0, ptr %1, align 4
  store i32 1, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %77 = load i32, ptr %1, align 4
  ret i32 %77

78:                                               ; preds = %73
  unreachable
}

; 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 @puts(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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; 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 [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [13 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
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %4 = load i64, ptr %1, align 8, !tbaa !5
  %5 = add nsw i64 %4, -1
  store i64 %5, ptr %1, align 8, !tbaa !5
  %.not14 = icmp eq i64 %4, 0
  br i1 %.not14, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %0, %23
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  %7 = load i64, ptr %2, align 8
  switch i64 %7, label %10 [
    i64 4, label %8
    i64 2, label %8
    i64 1, label %8
  ]

8:                                                ; preds = %.lr.ph, %.lr.ph, %.lr.ph
  %9 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.1)
  br label %23, !llvm.loop !9

10:                                               ; preds = %.lr.ph
  %11 = sdiv i64 %7, 7
  %12 = srem i64 %7, 7
  switch i64 %12, label %.fold.split [
    i64 1, label %13
    i64 2, label %15
    i64 3, label %21
    i64 4, label %17
    i64 5, label %19
    i64 6, label %20
  ]

13:                                               ; preds = %10
  %14 = add nsw i64 %11, -1
  br label %21

15:                                               ; preds = %10
  %16 = add nsw i64 %11, -1
  br label %21

17:                                               ; preds = %10
  %18 = add nsw i64 %11, -1
  br label %21

19:                                               ; preds = %10
  br label %21

20:                                               ; preds = %10
  br label %21

.fold.split:                                      ; preds = %10
  br label %21

21:                                               ; preds = %10, %.fold.split, %15, %17, %20, %19, %13
  %.011 = phi i64 [ 1, %13 ], [ 3, %15 ], [ 2, %17 ], [ 0, %19 ], [ 2, %20 ], [ 1, %10 ], [ 0, %.fold.split ]
  %.010 = phi i64 [ 1, %13 ], [ 0, %15 ], [ 1, %17 ], [ 1, %19 ], [ 0, %20 ], [ 0, %10 ], [ 0, %.fold.split ]
  %.0 = phi i64 [ %14, %13 ], [ %16, %15 ], [ %18, %17 ], [ %11, %19 ], [ %11, %20 ], [ %11, %10 ], [ %11, %.fold.split ]
  %22 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i64 noundef %.011, i64 noundef %.010, i64 noundef %.0)
  br label %23

23:                                               ; preds = %21, %8
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %24 = load i64, ptr %1, align 8, !tbaa !5
  %25 = add nsw i64 %24, -1
  store i64 %25, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %24, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %23, %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: nofree nounwind
declare noundef i32 @puts(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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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