; LLVM IR from DionysiosB/CodeForces :: 0001-0099 (43C-LuckyTickets)

; 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 [4 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
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  store i64 0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store i64 0, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store i64 0, ptr %5, align 8, !tbaa !5
  br label %9

9:                                                ; preds = %37, %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 %38

13:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %6)
  %15 = load i64, ptr %6, align 8, !tbaa !5
  %16 = srem i64 %15, 3
  %17 = icmp eq i64 %16, 0
  br i1 %17, label %18, label %21

18:                                               ; preds = %13
  %19 = load i64, ptr %3, align 8, !tbaa !5
  %20 = add nsw i64 %19, 1
  store i64 %20, ptr %3, align 8, !tbaa !5
  br label %37

21:                                               ; preds = %13
  %22 = load i64, ptr %6, align 8, !tbaa !5
  %23 = srem i64 %22, 3
  %24 = icmp eq i64 %23, 1
  br i1 %24, label %25, label %28

25:                                               ; preds = %21
  %26 = load i64, ptr %4, align 8, !tbaa !5
  %27 = add nsw i64 %26, 1
  store i64 %27, ptr %4, align 8, !tbaa !5
  br label %36

28:                                               ; preds = %21
  %29 = load i64, ptr %6, align 8, !tbaa !5
  %30 = srem i64 %29, 3
  %31 = icmp eq i64 %30, 2
  br i1 %31, label %32, label %35

32:                                               ; preds = %28
  %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 %35

35:                                               ; preds = %32, %28
  br label %36

36:                                               ; preds = %35, %25
  br label %37

37:                                               ; preds = %36, %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %9, !llvm.loop !9

38:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %39 = load i64, ptr %3, align 8, !tbaa !5
  %40 = sdiv i64 %39, 2
  %41 = load i64, ptr %4, align 8, !tbaa !5
  %42 = load i64, ptr %5, align 8, !tbaa !5
  %43 = icmp slt i64 %41, %42
  br i1 %43, label %44, label %46

44:                                               ; preds = %38
  %45 = load i64, ptr %4, align 8, !tbaa !5
  br label %48

46:                                               ; preds = %38
  %47 = load i64, ptr %5, align 8, !tbaa !5
  br label %48

48:                                               ; preds = %46, %44
  %49 = phi i64 [ %45, %44 ], [ %47, %46 ]
  %50 = add nsw i64 %40, %49
  store i64 %50, ptr %7, align 8, !tbaa !5
  %51 = load i64, ptr %7, align 8, !tbaa !5
  %52 = call i32 (ptr, ...) @printf(ptr noundef @.str, i64 noundef %51)
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #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 = distinct !{!9, !10}
!10 = !{!"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 [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 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) #4
  %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
  %.not14 = icmp eq i64 %4, 0
  br i1 %.not14, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %0, %15
  %.017 = phi i64 [ %.1, %15 ], [ 0, %0 ]
  %.0916 = phi i64 [ %.110, %15 ], [ 0, %0 ]
  %.01115 = phi i64 [ %.112, %15 ], [ 0, %0 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #4
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2)
  %7 = load i64, ptr %2, align 8, !tbaa !5
  %8 = srem i64 %7, 3
  switch i64 %8, label %15 [
    i64 0, label %9
    i64 1, label %11
    i64 2, label %13
  ]

9:                                                ; preds = %.lr.ph
  %10 = add nsw i64 %.017, 1
  br label %15

11:                                               ; preds = %.lr.ph
  %12 = add nsw i64 %.01115, 1
  br label %15

13:                                               ; preds = %.lr.ph
  %14 = add nsw i64 %.0916, 1
  br label %15

15:                                               ; preds = %.lr.ph, %11, %13, %9
  %.112 = phi i64 [ %.01115, %9 ], [ %12, %11 ], [ %.01115, %13 ], [ %.01115, %.lr.ph ]
  %.110 = phi i64 [ %.0916, %9 ], [ %.0916, %11 ], [ %14, %13 ], [ %.0916, %.lr.ph ]
  %.1 = phi i64 [ %10, %9 ], [ %.017, %11 ], [ %.017, %13 ], [ %.017, %.lr.ph ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #4
  %16 = load i64, ptr %1, align 8, !tbaa !5
  %17 = add nsw i64 %16, -1
  store i64 %17, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %16, 0
  br i1 %.not, label %._crit_edge.loopexit, label %.lr.ph, !llvm.loop !9

._crit_edge.loopexit:                             ; preds = %15
  %18 = sdiv i64 %.1, 2
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %0
  %.011.lcssa = phi i64 [ 0, %0 ], [ %.112, %._crit_edge.loopexit ]
  %.09.lcssa = phi i64 [ 0, %0 ], [ %.110, %._crit_edge.loopexit ]
  %.0.lcssa = phi i64 [ 0, %0 ], [ %18, %._crit_edge.loopexit ]
  %19 = call i64 @llvm.smin.i64(i64 %.011.lcssa, i64 %.09.lcssa)
  %20 = add nsw i64 %.0.lcssa, %19
  %21 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i64 noundef %20)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #4
  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

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.smin.i64(i64, i64) #3

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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { 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"}


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