; LLVM IR from DionysiosB/CodeForces :: 1916C-TrainingBeforeTheOlympiad (main)

; 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 [6 x i8], align 1
@.str.2 = 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 i64, align 8
  %5 = alloca i64, align 8
  %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
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %10

10:                                               ; preds = %63, %0
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %12 = add nsw i64 %11, -1
  store i64 %12, ptr %2, align 8, !tbaa !5
  %13 = icmp ne i64 %11, 0
  br i1 %13, label %14, label %65

14:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  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
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 0, ptr %6, align 8, !tbaa !5
  br label %16

16:                                               ; preds = %60, %14
  %17 = load i64, ptr %6, align 8, !tbaa !5
  %18 = load i64, ptr %3, align 8, !tbaa !5
  %19 = icmp slt i64 %17, %18
  br i1 %19, label %21, label %20

20:                                               ; preds = %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %63

21:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %22 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %7)
  %23 = load i64, ptr %7, align 8, !tbaa !5
  %24 = load i64, ptr %4, align 8, !tbaa !5
  %25 = add nsw i64 %24, %23
  store i64 %25, ptr %4, align 8, !tbaa !5
  %26 = load i64, ptr %7, align 8, !tbaa !5
  %27 = srem i64 %26, 2
  %28 = load i64, ptr %5, align 8, !tbaa !5
  %29 = add nsw i64 %28, %27
  store i64 %29, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %30 = load i64, ptr %4, align 8, !tbaa !5
  store i64 %30, ptr %8, align 8, !tbaa !5
  %31 = load i64, ptr %5, align 8, !tbaa !5
  %32 = srem i64 %31, 3
  %33 = icmp eq i64 %32, 0
  br i1 %33, label %38, label %34

34:                                               ; preds = %21
  %35 = load i64, ptr %5, align 8, !tbaa !5
  %36 = srem i64 %35, 3
  %37 = icmp eq i64 %36, 2
  br i1 %37, label %38, label %43

38:                                               ; preds = %34, %21
  %39 = load i64, ptr %5, align 8, !tbaa !5
  %40 = sdiv i64 %39, 3
  %41 = load i64, ptr %8, align 8, !tbaa !5
  %42 = sub nsw i64 %41, %40
  store i64 %42, ptr %8, align 8, !tbaa !5
  br label %57

43:                                               ; preds = %34
  %44 = load i64, ptr %5, align 8, !tbaa !5
  %45 = srem i64 %44, 3
  %46 = icmp eq i64 %45, 1
  br i1 %46, label %47, label %56

47:                                               ; preds = %43
  %48 = load i64, ptr %6, align 8, !tbaa !5
  %49 = icmp sgt i64 %48, 0
  br i1 %49, label %50, label %56

50:                                               ; preds = %47
  %51 = load i64, ptr %5, align 8, !tbaa !5
  %52 = sdiv i64 %51, 3
  %53 = add nsw i64 %52, 1
  %54 = load i64, ptr %8, align 8, !tbaa !5
  %55 = sub nsw i64 %54, %53
  store i64 %55, ptr %8, align 8, !tbaa !5
  br label %56

56:                                               ; preds = %50, %47, %43
  br label %57

57:                                               ; preds = %56, %38
  %58 = load i64, ptr %8, align 8, !tbaa !5
  %59 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef %58)
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  br label %60

60:                                               ; preds = %57
  %61 = load i64, ptr %6, align 8, !tbaa !5
  %62 = add nsw i64 %61, 1
  store i64 %62, ptr %6, align 8, !tbaa !5
  br label %16, !llvm.loop !9

63:                                               ; preds = %20
  %64 = call i32 @puts(ptr noundef @.str.2)
  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
  br label %10, !llvm.loop !11

65:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %66 = load i32, ptr %1, align 4
  ret i32 %66
}

; 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 @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

declare i32 @puts(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 [6 x i8], align 1
@.str.2 = 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
  %3 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %5 = load i64, ptr %1, align 8, !tbaa !5
  %6 = add nsw i64 %5, -1
  store i64 %6, ptr %1, align 8, !tbaa !5
  %.not24 = icmp eq i64 %5, 0
  br i1 %.not24, label %._crit_edge27, label %.lr.ph26

.lr.ph26:                                         ; preds = %0, %._crit_edge
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  %8 = load i64, ptr %2, align 8, !tbaa !5
  %9 = icmp sgt i64 %8, 0
  br i1 %9, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %.lr.ph26
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %10 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %3)
  %11 = load i64, ptr %3, align 8, !tbaa !5
  %12 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef %11)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  %13 = load i64, ptr %2, align 8, !tbaa !5
  %14 = icmp sgt i64 %13, 1
  br i1 %14, label %.lr.ph.preheader29, label %._crit_edge

.lr.ph.preheader29:                               ; preds = %.lr.ph.preheader
  %15 = srem i64 %11, 2
  br label %.lr.ph

._crit_edge:                                      ; preds = %30, %.lr.ph.preheader, %.lr.ph26
  %16 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.2)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %17 = load i64, ptr %1, align 8, !tbaa !5
  %18 = add nsw i64 %17, -1
  store i64 %18, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %17, 0
  br i1 %.not, label %._crit_edge27, label %.lr.ph26, !llvm.loop !9

.lr.ph:                                           ; preds = %.lr.ph.preheader29, %30
  %.01623 = phi i64 [ %32, %30 ], [ 1, %.lr.ph.preheader29 ]
  %.01722 = phi i64 [ %23, %30 ], [ %15, %.lr.ph.preheader29 ]
  %.01821 = phi i64 [ %21, %30 ], [ %11, %.lr.ph.preheader29 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %19 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %3)
  %20 = load i64, ptr %3, align 8, !tbaa !5
  %21 = add nsw i64 %20, %.01821
  %22 = srem i64 %20, 2
  %23 = add nsw i64 %22, %.01722
  %24 = srem i64 %23, 3
  %25 = sdiv i64 %23, 3
  switch i64 %24, label %30 [
    i64 0, label %26
    i64 2, label %26
    i64 1, label %28
  ]

26:                                               ; preds = %.lr.ph, %.lr.ph
  %.neg20 = sdiv i64 %23, -3
  %27 = add i64 %.neg20, %21
  br label %30

28:                                               ; preds = %.lr.ph
  %.neg = xor i64 %25, -1
  %29 = add i64 %21, %.neg
  br label %30

30:                                               ; preds = %.lr.ph, %28, %26
  %.0 = phi i64 [ %27, %26 ], [ %29, %28 ], [ %21, %.lr.ph ]
  %31 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef %.0)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  %32 = add nuw nsw i64 %.01623, 1
  %33 = load i64, ptr %2, align 8, !tbaa !5
  %34 = icmp slt i64 %32, %33
  br i1 %34, label %.lr.ph, label %._crit_edge, !llvm.loop !11

._crit_edge27:                                    ; 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 @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

; Function Attrs: nofree nounwind
declare noundef i32 @puts(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, !10, !12}
!12 = !{!"llvm.loop.peeled.count", i32 1}


; Effective O3 passes: BDCEPass,CorrelatedValuePropagationPass,DivRemPairsPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopFullUnrollPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SCCPPass,SROAPass,SimplifyCFGPass