; LLVM IR from DionysiosB/CodeForces :: 1300-1399 (1326C-PermutationPartitions)

; 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 [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [11 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 i64, align 8
  %8 = alloca i64, align 8
  %9 = alloca i32, align 4
  %10 = 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
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3, ptr noundef %4)
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %12 = load i64, ptr %4, align 8, !tbaa !5
  %13 = load i64, ptr %3, align 8, !tbaa !5
  %14 = mul nsw i64 %12, %13
  %15 = load i64, ptr %4, align 8, !tbaa !5
  %16 = load i64, ptr %4, align 8, !tbaa !5
  %17 = sub nsw i64 %16, 1
  %18 = mul nsw i64 %15, %17
  %19 = sdiv i64 %18, 2
  %20 = sub nsw i64 %14, %19
  store i64 %20, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 1, 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 0, ptr %8, align 8, !tbaa !9
  br label %21

21:                                               ; preds = %55, %0
  %22 = load i64, ptr %8, align 8, !tbaa !9
  %23 = load i64, ptr %3, align 8, !tbaa !5
  %24 = icmp slt i64 %22, %23
  br i1 %24, label %26, label %25

25:                                               ; preds = %21
  store i32 2, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br label %58

26:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %27 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %10)
  %28 = load i64, ptr %10, align 8, !tbaa !5
  %29 = load i64, ptr %4, align 8, !tbaa !5
  %30 = add nsw i64 %28, %29
  %31 = load i64, ptr %3, align 8, !tbaa !5
  %32 = icmp sle i64 %30, %31
  br i1 %32, label %33, label %34

33:                                               ; preds = %26
  store i32 4, ptr %9, align 4
  br label %52

34:                                               ; preds = %26
  %35 = load i64, ptr %7, align 8, !tbaa !5
  %36 = icmp sge i64 %35, 0
  br i1 %36, label %37, label %39

37:                                               ; preds = %34
  %38 = load i64, ptr %7, align 8, !tbaa !5
  br label %42

39:                                               ; preds = %34
  %40 = load i64, ptr %8, align 8, !tbaa !9
  %41 = sub nsw i64 %40, 1
  br label %42

42:                                               ; preds = %39, %37
  %43 = phi i64 [ %38, %37 ], [ %41, %39 ]
  store i64 %43, ptr %7, align 8, !tbaa !5
  %44 = load i64, ptr %8, align 8, !tbaa !9
  %45 = load i64, ptr %7, align 8, !tbaa !5
  %46 = sub nsw i64 %44, %45
  %47 = load i64, ptr %6, align 8, !tbaa !5
  %48 = mul nsw i64 %47, %46
  store i64 %48, ptr %6, align 8, !tbaa !5
  %49 = load i64, ptr %6, align 8, !tbaa !5
  %50 = srem i64 %49, 998244353
  store i64 %50, ptr %6, align 8, !tbaa !5
  %51 = load i64, ptr %8, align 8, !tbaa !9
  store i64 %51, ptr %7, align 8, !tbaa !5
  store i32 0, ptr %9, align 4
  br label %52

52:                                               ; preds = %42, %33
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  %53 = load i32, ptr %9, align 4
  switch i32 %53, label %63 [
    i32 0, label %54
    i32 4, label %55
  ]

54:                                               ; preds = %52
  br label %55

55:                                               ; preds = %54, %52
  %56 = load i64, ptr %8, align 8, !tbaa !9
  %57 = add nsw i64 %56, 1
  store i64 %57, ptr %8, align 8, !tbaa !9
  br label %21, !llvm.loop !11

58:                                               ; preds = %25
  %59 = load i64, ptr %5, align 8, !tbaa !5
  %60 = load i64, ptr %6, align 8, !tbaa !5
  %61 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i64 noundef %59, i64 noundef %60)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %9, align 4
  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
  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
  %62 = load i32, ptr %1, align 4
  ret i32 %62

63:                                               ; preds = %52
  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

; 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 = !{!10, !10, i64 0}
!10 = !{!"long", !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 [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [11 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
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2)
  %5 = load i64, ptr %2, align 8, !tbaa !5
  %6 = load i64, ptr %1, align 8, !tbaa !5
  %7 = icmp sgt i64 %6, 0
  br i1 %7, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %25, %0
  %.014.lcssa = phi i64 [ 1, %0 ], [ %.115, %25 ]
  %8 = mul nsw i64 %6, %5
  %9 = add nsw i64 %5, -1
  %10 = mul nsw i64 %9, %5
  %.neg = sdiv i64 %10, -2
  %11 = add i64 %.neg, %8
  %12 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i64 noundef %11, i64 noundef %.014.lcssa)
  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

.lr.ph:                                           ; preds = %0, %25
  %.018 = phi i64 [ %26, %25 ], [ 0, %0 ]
  %.01317 = phi i64 [ %.1, %25 ], [ -1, %0 ]
  %.01416 = phi i64 [ %.115, %25 ], [ 1, %0 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %3)
  %14 = load i64, ptr %3, align 8, !tbaa !5
  %15 = load i64, ptr %2, align 8, !tbaa !5
  %16 = add nsw i64 %15, %14
  %17 = load i64, ptr %1, align 8, !tbaa !5
  %.not = icmp sgt i64 %16, %17
  br i1 %.not, label %18, label %25

18:                                               ; preds = %.lr.ph
  %19 = add nsw i64 %.018, -1
  %20 = icmp slt i64 %.01317, 0
  %21 = select i1 %20, i64 %19, i64 %.01317
  %22 = sub nsw i64 %.018, %21
  %23 = mul nsw i64 %22, %.01416
  %24 = srem i64 %23, 998244353
  br label %25

25:                                               ; preds = %.lr.ph, %18
  %.115 = phi i64 [ %24, %18 ], [ %.01416, %.lr.ph ]
  %.1 = phi i64 [ %.018, %18 ], [ %.01317, %.lr.ph ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  %26 = add nuw nsw i64 %.018, 1
  %27 = icmp slt i64 %26, %17
  br i1 %27, label %.lr.ph, label %._crit_edge, !llvm.loop !9
}

; 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 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,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass