; LLVM IR from DionysiosB/CodeForces :: 1300-1399 (1343B-BalancedArray)

; 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 [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.4 = 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 i32, align 4
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  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 = %58, %56, %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 %59

12:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  %14 = load i64, ptr %3, align 8, !tbaa !5
  %15 = srem i64 %14, 4
  %16 = icmp ne i64 %15, 0
  br i1 %16, label %17, label %19

17:                                               ; preds = %12
  %18 = call i32 @puts(ptr noundef @.str.1)
  store i32 2, ptr %4, align 4
  br label %56, !llvm.loop !9

19:                                               ; preds = %12
  %20 = call i32 @puts(ptr noundef @.str.2)
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store i64 1, ptr %5, align 8, !tbaa !5
  br label %21

21:                                               ; preds = %31, %19
  %22 = load i64, ptr %5, align 8, !tbaa !5
  %23 = mul nsw i64 2, %22
  %24 = load i64, ptr %3, align 8, !tbaa !5
  %25 = icmp sle i64 %23, %24
  br i1 %25, label %27, label %26

26:                                               ; preds = %21
  store i32 4, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %34

27:                                               ; preds = %21
  %28 = load i64, ptr %5, align 8, !tbaa !5
  %29 = mul nsw i64 2, %28
  %30 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i64 noundef %29)
  br label %31

31:                                               ; preds = %27
  %32 = load i64, ptr %5, align 8, !tbaa !5
  %33 = add nsw i64 %32, 1
  store i64 %33, ptr %5, align 8, !tbaa !5
  br label %21, !llvm.loop !11

34:                                               ; preds = %26
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 0, ptr %6, align 8, !tbaa !5
  br label %35

35:                                               ; preds = %47, %34
  %36 = load i64, ptr %6, align 8, !tbaa !5
  %37 = add nsw i64 %36, 1
  %38 = load i64, ptr %3, align 8, !tbaa !5
  %39 = sdiv i64 %38, 2
  %40 = icmp slt i64 %37, %39
  br i1 %40, label %42, label %41

41:                                               ; preds = %35
  store i32 7, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %50

42:                                               ; preds = %35
  %43 = load i64, ptr %6, align 8, !tbaa !5
  %44 = mul nsw i64 2, %43
  %45 = add nsw i64 %44, 1
  %46 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i64 noundef %45)
  br label %47

47:                                               ; preds = %42
  %48 = load i64, ptr %6, align 8, !tbaa !5
  %49 = add nsw i64 %48, 1
  store i64 %49, ptr %6, align 8, !tbaa !5
  br label %35, !llvm.loop !12

50:                                               ; preds = %41
  %51 = load i64, ptr %3, align 8, !tbaa !5
  %52 = mul nsw i64 3, %51
  %53 = sdiv i64 %52, 2
  %54 = sub nsw i64 %53, 1
  %55 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i64 noundef %54)
  store i32 0, ptr %4, align 4
  br label %56

56:                                               ; preds = %50, %17
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  %57 = load i32, ptr %4, align 4
  switch i32 %57, label %61 [
    i32 0, label %58
    i32 2, label %8
  ]

58:                                               ; preds = %56
  br label %8, !llvm.loop !9

59:                                               ; preds = %8
  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
  %60 = load i32, ptr %1, align 4
  ret i32 %60

61:                                               ; preds = %56
  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"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


; 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 [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.4 = 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
  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
  %.not16 = icmp eq i64 %4, 0
  br i1 %.not16, label %._crit_edge19, label %.lr.ph18

.lr.ph18:                                         ; preds = %0, %32
  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, !tbaa !5
  %8 = and i64 %7, 3
  %.not10 = icmp eq i64 %8, 0
  br i1 %.not10, label %11, label %9

9:                                                ; preds = %.lr.ph18
  %10 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.1)
  br label %32, !llvm.loop !9

11:                                               ; preds = %.lr.ph18
  %12 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.2)
  %13 = load i64, ptr %2, align 8, !tbaa !5
  %.not1112 = icmp slt i64 %13, 2
  br i1 %.not1112, label %._crit_edge, label %.lr.ph

.preheader:                                       ; preds = %.lr.ph
  %14 = icmp sgt i64 %19, 3
  br i1 %14, label %.lr.ph15, label %._crit_edge

.lr.ph:                                           ; preds = %11, %.lr.ph
  %15 = phi i64 [ %18, %.lr.ph ], [ 2, %11 ]
  %.0713 = phi i64 [ %17, %.lr.ph ], [ 1, %11 ]
  %16 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i64 noundef %15)
  %17 = add nuw nsw i64 %.0713, 1
  %18 = shl nuw nsw i64 %17, 1
  %19 = load i64, ptr %2, align 8, !tbaa !5
  %.not11 = icmp sgt i64 %18, %19
  br i1 %.not11, label %.preheader, label %.lr.ph, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph15, %11, %.preheader
  %.lcssa = phi i64 [ %19, %.preheader ], [ %13, %11 ], [ %29, %.lr.ph15 ]
  %20 = mul nsw i64 %.lcssa, 3
  %21 = sdiv i64 %20, 2
  %22 = add nsw i64 %21, -1
  %23 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i64 noundef %22)
  br label %32

.lr.ph15:                                         ; preds = %.preheader, %.lr.ph15
  %24 = phi i64 [ %28, %.lr.ph15 ], [ 1, %.preheader ]
  %.014 = phi i64 [ %24, %.lr.ph15 ], [ 0, %.preheader ]
  %25 = shl nuw nsw i64 %.014, 1
  %26 = or disjoint i64 %25, 1
  %27 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i64 noundef %26)
  %28 = add nuw nsw i64 %24, 1
  %29 = load i64, ptr %2, align 8, !tbaa !5
  %30 = sdiv i64 %29, 2
  %31 = icmp slt i64 %28, %30
  br i1 %31, label %.lr.ph15, label %._crit_edge, !llvm.loop !12

32:                                               ; preds = %._crit_edge, %9
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %33 = load i64, ptr %1, align 8, !tbaa !5
  %34 = add nsw i64 %33, -1
  store i64 %34, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %33, 0
  br i1 %.not, label %._crit_edge19, label %.lr.ph18

._crit_edge19:                                    ; preds = %32, %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"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


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