; LLVM IR from DionysiosB/CodeForces :: 1600-1699 (1658B-MarinAndAntiCoprimePermutation)

; 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 [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 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 i32, align 4
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  store i64 998244353, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  br label %10

10:                                               ; preds = %46, %44, %0
  %11 = load i64, ptr %3, align 8, !tbaa !5
  %12 = add nsw i64 %11, -1
  store i64 %12, ptr %3, align 8, !tbaa !5
  %13 = icmp ne i64 %11, 0
  br i1 %13, label %14, label %47

14:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %4)
  %16 = load i64, ptr %4, align 8, !tbaa !5
  %17 = srem i64 %16, 2
  %18 = icmp ne i64 %17, 0
  br i1 %18, label %19, label %21

19:                                               ; preds = %14
  %20 = call i32 @puts(ptr noundef @.str.1)
  store i32 2, ptr %5, align 4
  br label %44, !llvm.loop !9

21:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %22 = load i64, ptr %4, align 8, !tbaa !5
  %23 = sdiv i64 %22, 2
  store i64 %23, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  store i64 1, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  store i64 2, ptr %8, align 8, !tbaa !5
  br label %24

24:                                               ; preds = %35, %21
  %25 = load i64, ptr %8, align 8, !tbaa !5
  %26 = load i64, ptr %6, align 8, !tbaa !5
  %27 = icmp sle i64 %25, %26
  br i1 %27, label %29, label %28

28:                                               ; preds = %24
  store i32 4, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br label %38

29:                                               ; preds = %24
  %30 = load i64, ptr %8, align 8, !tbaa !5
  %31 = load i64, ptr %7, align 8, !tbaa !5
  %32 = mul nsw i64 %31, %30
  store i64 %32, ptr %7, align 8, !tbaa !5
  %33 = load i64, ptr %7, align 8, !tbaa !5
  %34 = srem i64 %33, 998244353
  store i64 %34, ptr %7, align 8, !tbaa !5
  br label %35

35:                                               ; preds = %29
  %36 = load i64, ptr %8, align 8, !tbaa !5
  %37 = add nsw i64 %36, 1
  store i64 %37, ptr %8, align 8, !tbaa !5
  br label %24, !llvm.loop !11

38:                                               ; preds = %28
  %39 = load i64, ptr %7, align 8, !tbaa !5
  %40 = load i64, ptr %7, align 8, !tbaa !5
  %41 = mul nsw i64 %39, %40
  %42 = srem i64 %41, 998244353
  %43 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i64 noundef %42)
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  store i32 0, ptr %5, align 4
  br label %44

44:                                               ; preds = %38, %19
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  %45 = load i32, ptr %5, align 4
  switch i32 %45, label %49 [
    i32 0, label %46
    i32 2, label %10
  ]

46:                                               ; preds = %44
  br label %10, !llvm.loop !9

47:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %48 = load i32, ptr %1, align 4
  ret i32 %48

49:                                               ; preds = %44
  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

; 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 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}


; 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 [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 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, %34
  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, 1
  %.not10 = icmp eq i64 %8, 0
  br i1 %.not10, label %11, label %9

9:                                                ; preds = %.lr.ph17
  %10 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.1)
  br label %34, !llvm.loop !9

11:                                               ; preds = %.lr.ph17
  %12 = ashr exact i64 %7, 1
  %.not1112 = icmp slt i64 %12, 2
  br i1 %.not1112, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %11
  %13 = add nsw i64 %12, -1
  %14 = add nsw i64 %12, -2
  %xtraiter = and i64 %13, 3
  %15 = icmp ult i64 %14, 3
  br i1 %15, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %13, -4
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %.lcssa.ph = phi i64 [ poison, %.lr.ph.preheader ], [ %32, %.lr.ph ]
  %.014.unr = phi i64 [ 2, %.lr.ph.preheader ], [ %33, %.lr.ph ]
  %.0913.unr = phi i64 [ 1, %.lr.ph.preheader ], [ %32, %.lr.ph ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil
  %.014.epil = phi i64 [ %18, %.lr.ph.epil ], [ %.014.unr, %._crit_edge.loopexit.unr-lcssa ]
  %.0913.epil = phi i64 [ %17, %.lr.ph.epil ], [ %.0913.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.lr.ph.epil ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %16 = mul nsw i64 %.014.epil, %.0913.epil
  %17 = srem i64 %16, 998244353
  %18 = add nuw nsw i64 %.014.epil, 1
  %epil.iter.next = add i64 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i64 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %._crit_edge, label %.lr.ph.epil, !llvm.loop !11

._crit_edge:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil, %11
  %.09.lcssa = phi i64 [ 1, %11 ], [ %.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %17, %.lr.ph.epil ]
  %19 = mul nsw i64 %.09.lcssa, %.09.lcssa
  %20 = urem i64 %19, 998244353
  %21 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i64 noundef %20)
  br label %34

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %.014 = phi i64 [ 2, %.lr.ph.preheader.new ], [ %33, %.lr.ph ]
  %.0913 = phi i64 [ 1, %.lr.ph.preheader.new ], [ %32, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.3, %.lr.ph ]
  %22 = mul nsw i64 %.014, %.0913
  %23 = srem i64 %22, 998244353
  %24 = or disjoint i64 %.014, 1
  %25 = mul nsw i64 %24, %23
  %26 = srem i64 %25, 998244353
  %27 = add nuw nsw i64 %.014, 2
  %28 = mul nsw i64 %27, %26
  %29 = srem i64 %28, 998244353
  %30 = add nuw nsw i64 %.014, 3
  %31 = mul nsw i64 %30, %29
  %32 = srem i64 %31, 998244353
  %33 = add nuw nsw i64 %.014, 4
  %niter.next.3 = add i64 %niter, 4
  %niter.ncmp.3 = icmp eq i64 %niter.next.3, %unroll_iter
  br i1 %niter.ncmp.3, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !13

34:                                               ; preds = %._crit_edge, %9
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #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_edge18, label %.lr.ph17

._crit_edge18:                                    ; preds = %34, %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: 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 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, !12}
!12 = !{!"llvm.loop.unroll.disable"}
!13 = distinct !{!13, !10}


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