; LLVM IR from DionysiosB/CodeForces :: 0800-0899 (828A-RestaurantTables)

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

9:                                                ; preds = %57, %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 %58

13:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %7)
  %15 = load i32, ptr %7, align 4, !tbaa !9
  %16 = icmp eq i32 %15, 1
  br i1 %16, label %17, label %43

17:                                               ; preds = %13
  %18 = load i64, ptr %3, align 8, !tbaa !5
  %19 = icmp sgt i64 %18, 0
  br i1 %19, label %20, label %23

20:                                               ; preds = %17
  %21 = load i64, ptr %3, align 8, !tbaa !5
  %22 = add nsw i64 %21, -1
  store i64 %22, ptr %3, align 8, !tbaa !5
  br label %42

23:                                               ; preds = %17
  %24 = load i64, ptr %4, align 8, !tbaa !5
  %25 = icmp sgt i64 %24, 0
  br i1 %25, label %26, label %31

26:                                               ; preds = %23
  %27 = load i64, ptr %4, align 8, !tbaa !5
  %28 = add nsw i64 %27, -1
  store i64 %28, ptr %4, align 8, !tbaa !5
  %29 = load i64, ptr %5, align 8, !tbaa !5
  %30 = add nsw i64 %29, 1
  store i64 %30, ptr %5, align 8, !tbaa !5
  br label %41

31:                                               ; preds = %23
  %32 = load i64, ptr %5, align 8, !tbaa !5
  %33 = icmp sgt i64 %32, 0
  br i1 %33, label %34, label %37

34:                                               ; preds = %31
  %35 = load i64, ptr %5, align 8, !tbaa !5
  %36 = add nsw i64 %35, -1
  store i64 %36, ptr %5, align 8, !tbaa !5
  br label %40

37:                                               ; preds = %31
  %38 = load i64, ptr %6, align 8, !tbaa !5
  %39 = add nsw i64 %38, 1
  store i64 %39, ptr %6, align 8, !tbaa !5
  br label %40

40:                                               ; preds = %37, %34
  br label %41

41:                                               ; preds = %40, %26
  br label %42

42:                                               ; preds = %41, %20
  br label %57

43:                                               ; preds = %13
  %44 = load i32, ptr %7, align 4, !tbaa !9
  %45 = icmp eq i32 %44, 2
  br i1 %45, label %46, label %56

46:                                               ; preds = %43
  %47 = load i64, ptr %4, align 8, !tbaa !5
  %48 = icmp sgt i64 %47, 0
  br i1 %48, label %49, label %52

49:                                               ; preds = %46
  %50 = load i64, ptr %4, align 8, !tbaa !5
  %51 = add nsw i64 %50, -1
  store i64 %51, ptr %4, align 8, !tbaa !5
  br label %55

52:                                               ; preds = %46
  %53 = load i64, ptr %6, align 8, !tbaa !5
  %54 = add nsw i64 %53, 2
  store i64 %54, ptr %6, align 8, !tbaa !5
  br label %55

55:                                               ; preds = %52, %49
  br label %56

56:                                               ; preds = %55, %43
  br label %57

57:                                               ; preds = %56, %42
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %9, !llvm.loop !11

58:                                               ; preds = %9
  %59 = load i64, ptr %6, align 8, !tbaa !5
  %60 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i64 noundef %59)
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  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 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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 [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 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
  %4 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %6 = load i64, ptr %1, align 8, !tbaa !5
  %7 = add nsw i64 %6, -1
  store i64 %7, ptr %1, align 8, !tbaa !5
  %.not12 = icmp eq i64 %6, 0
  br i1 %.not12, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %0, %34
  %.014 = phi i64 [ %.1, %34 ], [ 0, %0 ]
  %.0613 = phi i64 [ %.17, %34 ], [ 0, %0 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #3
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %4)
  %9 = load i32, ptr %4, align 4, !tbaa !9
  switch i32 %9, label %34 [
    i32 1, label %10
    i32 2, label %27
  ]

10:                                               ; preds = %.lr.ph
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %12 = icmp sgt i64 %11, 0
  br i1 %12, label %13, label %15

13:                                               ; preds = %10
  %14 = add nsw i64 %11, -1
  store i64 %14, ptr %2, align 8, !tbaa !5
  br label %34

15:                                               ; preds = %10
  %16 = load i64, ptr %3, align 8, !tbaa !5
  %17 = icmp sgt i64 %16, 0
  br i1 %17, label %18, label %21

18:                                               ; preds = %15
  %19 = add nsw i64 %16, -1
  store i64 %19, ptr %3, align 8, !tbaa !5
  %20 = add nsw i64 %.0613, 1
  br label %34

21:                                               ; preds = %15
  %22 = icmp sgt i64 %.0613, 0
  br i1 %22, label %23, label %25

23:                                               ; preds = %21
  %24 = add nsw i64 %.0613, -1
  br label %34

25:                                               ; preds = %21
  %26 = add nsw i64 %.014, 1
  br label %34

27:                                               ; preds = %.lr.ph
  %28 = load i64, ptr %3, align 8, !tbaa !5
  %29 = icmp sgt i64 %28, 0
  br i1 %29, label %30, label %32

30:                                               ; preds = %27
  %31 = add nsw i64 %28, -1
  store i64 %31, ptr %3, align 8, !tbaa !5
  br label %34

32:                                               ; preds = %27
  %33 = add nsw i64 %.014, 2
  br label %34

34:                                               ; preds = %.lr.ph, %32, %30, %13, %23, %25, %18
  %.17 = phi i64 [ %.0613, %13 ], [ %20, %18 ], [ %24, %23 ], [ %.0613, %25 ], [ %.0613, %30 ], [ %.0613, %32 ], [ %.0613, %.lr.ph ]
  %.1 = phi i64 [ %.014, %13 ], [ %.014, %18 ], [ %.014, %23 ], [ %26, %25 ], [ %.014, %30 ], [ %33, %32 ], [ %.014, %.lr.ph ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #3
  %35 = load i64, ptr %1, align 8, !tbaa !5
  %36 = add nsw i64 %35, -1
  store i64 %36, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %35, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !11

._crit_edge:                                      ; preds = %34, %0
  %.0.lcssa = phi i64 [ 0, %0 ], [ %.1, %34 ]
  %37 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i64 noundef %.0.lcssa)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  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 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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