; LLVM IR from DionysiosB/CodeForces :: 1779B-MKnezsConstructiveForces (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 [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [5 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
  %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 = %73, %71, %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 %74

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)
  %16 = load i64, ptr %3, align 8, !tbaa !5
  %17 = icmp eq i64 %16, 3
  br i1 %17, label %18, label %20

18:                                               ; preds = %14
  %19 = call i32 @puts(ptr noundef @.str.1)
  store i32 2, ptr %4, align 4
  br label %71, !llvm.loop !9

20:                                               ; preds = %14
  %21 = call i32 @puts(ptr noundef @.str.2)
  %22 = load i64, ptr %3, align 8, !tbaa !5
  %23 = srem i64 %22, 2
  %24 = icmp ne i64 %23, 0
  br i1 %24, label %25, label %52

25:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %26 = load i64, ptr %3, align 8, !tbaa !5
  %27 = sdiv i64 %26, 2
  %28 = sub nsw i64 %27, 1
  store i64 %28, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %29 = load i64, ptr %3, align 8, !tbaa !5
  %30 = sub nsw i64 0, %29
  %31 = sdiv i64 %30, 2
  store i64 %31, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  store i64 0, ptr %7, align 8, !tbaa !5
  br label %32

32:                                               ; preds = %48, %25
  %33 = load i64, ptr %7, align 8, !tbaa !5
  %34 = load i64, ptr %3, align 8, !tbaa !5
  %35 = icmp slt i64 %33, %34
  br i1 %35, label %37, label %36

36:                                               ; preds = %32
  store i32 4, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  br label %51

37:                                               ; preds = %32
  %38 = load i64, ptr %7, align 8, !tbaa !5
  %39 = srem i64 %38, 2
  %40 = icmp ne i64 %39, 0
  br i1 %40, label %41, label %43

41:                                               ; preds = %37
  %42 = load i64, ptr %6, align 8, !tbaa !5
  br label %45

43:                                               ; preds = %37
  %44 = load i64, ptr %5, align 8, !tbaa !5
  br label %45

45:                                               ; preds = %43, %41
  %46 = phi i64 [ %42, %41 ], [ %44, %43 ]
  %47 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i64 noundef %46)
  br label %48

48:                                               ; preds = %45
  %49 = load i64, ptr %7, align 8, !tbaa !5
  %50 = add nsw i64 %49, 1
  store i64 %50, ptr %7, align 8, !tbaa !5
  br label %32, !llvm.loop !11

51:                                               ; preds = %36
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %68

52:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  store i64 0, ptr %8, align 8, !tbaa !5
  br label %53

53:                                               ; preds = %64, %52
  %54 = load i64, ptr %8, align 8, !tbaa !5
  %55 = load i64, ptr %3, align 8, !tbaa !5
  %56 = icmp slt i64 %54, %55
  br i1 %56, label %58, label %57

57:                                               ; preds = %53
  store i32 7, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br label %67

58:                                               ; preds = %53
  %59 = load i64, ptr %8, align 8, !tbaa !5
  %60 = srem i64 %59, 2
  %61 = mul nsw i64 2, %60
  %62 = sub nsw i64 1, %61
  %63 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i64 noundef %62)
  br label %64

64:                                               ; preds = %58
  %65 = load i64, ptr %8, align 8, !tbaa !5
  %66 = add nsw i64 %65, 1
  store i64 %66, ptr %8, align 8, !tbaa !5
  br label %53, !llvm.loop !12

67:                                               ; preds = %57
  br label %68

68:                                               ; preds = %67, %51
  %69 = call i32 @puts(ptr noundef @.str.4)
  br label %70

70:                                               ; preds = %68
  store i32 0, ptr %4, align 4
  br label %71

71:                                               ; preds = %70, %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  %72 = load i32, ptr %4, align 4
  switch i32 %72, label %76 [
    i32 0, label %73
    i32 2, label %10
  ]

73:                                               ; preds = %71
  br label %10, !llvm.loop !9

74:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %75 = load i32, ptr %1, align 4
  ret i32 %75

76:                                               ; preds = %71
  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 [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [5 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
  %.not16 = icmp eq i64 %4, 0
  br i1 %.not16, label %._crit_edge, label %.lr.ph17

.lr.ph17:                                         ; preds = %0, %.loopexit
  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 eq i64 %7, 3
  br i1 %8, label %.loopexit, label %9, !llvm.loop !9

9:                                                ; preds = %.lr.ph17
  %10 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.2)
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %12 = and i64 %11, 1
  %.not10 = icmp eq i64 %12, 0
  br i1 %.not10, label %.preheader, label %14

.preheader:                                       ; preds = %9
  %13 = icmp sgt i64 %11, 0
  br i1 %13, label %.lr.ph15, label %.loopexit

14:                                               ; preds = %9
  %15 = sdiv i64 %11, 2
  %16 = add nsw i64 %15, -1
  %17 = sdiv i64 %11, -2
  %18 = icmp sgt i64 %11, 0
  br i1 %18, label %.lr.ph, label %.loopexit

.lr.ph:                                           ; preds = %14, %.lr.ph
  %.0913 = phi i64 [ %22, %.lr.ph ], [ 0, %14 ]
  %19 = and i64 %.0913, 1
  %.not11 = icmp eq i64 %19, 0
  %20 = select i1 %.not11, i64 %16, i64 %17
  %21 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i64 noundef %20)
  %22 = add nuw nsw i64 %.0913, 1
  %23 = load i64, ptr %2, align 8, !tbaa !5
  %24 = icmp slt i64 %22, %23
  br i1 %24, label %.lr.ph, label %.loopexit, !llvm.loop !11

.lr.ph15:                                         ; preds = %.preheader, %.lr.ph15
  %.014 = phi i64 [ %29, %.lr.ph15 ], [ 0, %.preheader ]
  %25 = shl nuw i64 %.014, 1
  %26 = and i64 %25, 2
  %27 = sub nsw i64 1, %26
  %28 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i64 noundef %27)
  %29 = add nuw nsw i64 %.014, 1
  %30 = load i64, ptr %2, align 8, !tbaa !5
  %31 = icmp slt i64 %29, %30
  br i1 %31, label %.lr.ph15, label %.loopexit, !llvm.loop !12

.loopexit:                                        ; preds = %.lr.ph, %.lr.ph15, %.preheader, %14, %.lr.ph17
  %.str.4.sink = phi ptr [ @.str.1, %.lr.ph17 ], [ @.str.4, %14 ], [ @.str.4, %.preheader ], [ @.str.4, %.lr.ph15 ], [ @.str.4, %.lr.ph ]
  %32 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %.str.4.sink)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %33 = load i64, ptr %1, align 8, !tbaa !5
  %34 = add nsw i64 %33, -1
  store i64 %34, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %33, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph17

._crit_edge:                                      ; preds = %.loopexit, %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,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass