; LLVM IR from DionysiosB/CodeForces :: 1300-1399 (1352G-SpecialPermutation)

; 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 [5 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [1 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 = %52, %50, %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 %53

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 = icmp slt i64 %14, 4
  br i1 %15, label %16, label %18

16:                                               ; preds = %12
  %17 = call i32 @puts(ptr noundef @.str.1)
  store i32 2, ptr %4, align 4
  br label %50, !llvm.loop !9

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

20:                                               ; preds = %32, %18
  %21 = load i64, ptr %5, align 8, !tbaa !5
  %22 = icmp sgt i64 %21, 0
  br i1 %22, label %24, label %23

23:                                               ; preds = %20
  store i32 4, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %35

24:                                               ; preds = %20
  %25 = load i64, ptr %5, align 8, !tbaa !5
  %26 = and i64 %25, 1
  %27 = icmp ne i64 %26, 0
  br i1 %27, label %28, label %31

28:                                               ; preds = %24
  %29 = load i64, ptr %5, align 8, !tbaa !5
  %30 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i64 noundef %29)
  br label %31

31:                                               ; preds = %28, %24
  br label %32

32:                                               ; preds = %31
  %33 = load i64, ptr %5, align 8, !tbaa !5
  %34 = add nsw i64 %33, -1
  store i64 %34, ptr %5, align 8, !tbaa !5
  br label %20, !llvm.loop !11

35:                                               ; preds = %23
  %36 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i32 noundef 4, i32 noundef 2)
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 6, ptr %6, align 8, !tbaa !5
  br label %37

37:                                               ; preds = %45, %35
  %38 = load i64, ptr %6, align 8, !tbaa !5
  %39 = load i64, ptr %3, align 8, !tbaa !5
  %40 = icmp sle i64 %38, %39
  br i1 %40, label %42, label %41

41:                                               ; preds = %37
  store i32 7, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %48

42:                                               ; preds = %37
  %43 = load i64, ptr %6, align 8, !tbaa !5
  %44 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i64 noundef %43)
  br label %45

45:                                               ; preds = %42
  %46 = load i64, ptr %6, align 8, !tbaa !5
  %47 = add nsw i64 %46, 2
  store i64 %47, ptr %6, align 8, !tbaa !5
  br label %37, !llvm.loop !12

48:                                               ; preds = %41
  %49 = call i32 @puts(ptr noundef @.str.4)
  store i32 0, ptr %4, align 4
  br label %50

50:                                               ; preds = %48, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  %51 = load i32, ptr %4, align 4
  switch i32 %51, label %55 [
    i32 0, label %52
    i32 2, label %8
  ]

52:                                               ; preds = %50
  br label %8, !llvm.loop !9

53:                                               ; 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
  %54 = load i32, ptr %1, align 4
  ret i32 %54

55:                                               ; preds = %50
  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 [5 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [1 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
  %.not15 = icmp eq i64 %4, 0
  br i1 %.not15, label %._crit_edge18, label %.lr.ph17

.lr.ph17:                                         ; preds = %0, %._crit_edge
  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 = icmp slt i64 %7, 4
  br i1 %8, label %._crit_edge, label %.preheader, !llvm.loop !9

9:                                                ; preds = %15
  %10 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i32 noundef 4, i32 noundef 2)
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %.not1013 = icmp slt i64 %11, 6
  br i1 %.not1013, label %._crit_edge, label %.lr.ph

.preheader:                                       ; preds = %.lr.ph17, %15
  %.0812 = phi i64 [ %16, %15 ], [ %7, %.lr.ph17 ]
  %12 = and i64 %.0812, 1
  %.not11 = icmp eq i64 %12, 0
  br i1 %.not11, label %15, label %13

13:                                               ; preds = %.preheader
  %14 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i64 noundef %.0812)
  br label %15

15:                                               ; preds = %.preheader, %13
  %16 = add nsw i64 %.0812, -1
  %17 = icmp sgt i64 %.0812, 1
  br i1 %17, label %.preheader, label %9, !llvm.loop !11

.lr.ph:                                           ; preds = %9, %.lr.ph
  %.014 = phi i64 [ %19, %.lr.ph ], [ 6, %9 ]
  %18 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i64 noundef %.014)
  %19 = add nuw nsw i64 %.014, 2
  %20 = load i64, ptr %2, align 8, !tbaa !5
  %.not10 = icmp sgt i64 %19, %20
  br i1 %.not10, label %._crit_edge, label %.lr.ph, !llvm.loop !12

._crit_edge:                                      ; preds = %.lr.ph, %9, %.lr.ph17
  %.str.4.sink = phi ptr [ @.str.1, %.lr.ph17 ], [ @.str.4, %9 ], [ @.str.4, %.lr.ph ]
  %21 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %.str.4.sink)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %22 = load i64, ptr %1, align 8, !tbaa !5
  %23 = add nsw i64 %22, -1
  store i64 %23, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %22, 0
  br i1 %.not, label %._crit_edge18, label %.lr.ph17

._crit_edge18:                                    ; 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: 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: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass