; LLVM IR from DionysiosB/CodeForces :: 1957B-ABITofaConstruction (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 [10 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.5 = 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
  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)
  br label %9

9:                                                ; preds = %48, %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 %50

13:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %3, ptr noundef %4)
  %15 = load i64, ptr %3, align 8, !tbaa !5
  %16 = icmp eq i64 %15, 1
  br i1 %16, label %17, label %20

17:                                               ; preds = %13
  %18 = load i64, ptr %4, align 8, !tbaa !5
  %19 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i64 noundef %18)
  br label %37

20:                                               ; preds = %13
  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 1, ptr %6, align 8, !tbaa !5
  br label %21

21:                                               ; preds = %25, %20
  %22 = load i64, ptr %6, align 8, !tbaa !5
  %23 = load i64, ptr %4, align 8, !tbaa !5
  %24 = icmp sle i64 %22, %23
  br i1 %24, label %25, label %29

25:                                               ; preds = %21
  %26 = load i64, ptr %6, align 8, !tbaa !5
  store i64 %26, ptr %5, align 8, !tbaa !5
  %27 = load i64, ptr %6, align 8, !tbaa !5
  %28 = mul nsw i64 %27, 2
  store i64 %28, ptr %6, align 8, !tbaa !5
  br label %21, !llvm.loop !9

29:                                               ; preds = %21
  %30 = load i64, ptr %5, align 8, !tbaa !5
  %31 = sub nsw i64 %30, 1
  %32 = load i64, ptr %4, align 8, !tbaa !5
  %33 = load i64, ptr %5, align 8, !tbaa !5
  %34 = sub nsw i64 %32, %33
  %35 = add nsw i64 %34, 1
  %36 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i64 noundef %31, i64 noundef %35)
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %37

37:                                               ; preds = %29, %17
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  store i64 2, ptr %7, align 8, !tbaa !5
  br label %38

38:                                               ; preds = %45, %37
  %39 = load i64, ptr %7, align 8, !tbaa !5
  %40 = load i64, ptr %3, align 8, !tbaa !5
  %41 = icmp slt i64 %39, %40
  br i1 %41, label %43, label %42

42:                                               ; preds = %38
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  br label %48

43:                                               ; preds = %38
  %44 = call i32 (ptr, ...) @printf(ptr noundef @.str.4)
  br label %45

45:                                               ; preds = %43
  %46 = load i64, ptr %7, align 8, !tbaa !5
  %47 = add nsw i64 %46, 1
  store i64 %47, ptr %7, align 8, !tbaa !5
  br label %38, !llvm.loop !11

48:                                               ; preds = %42
  %49 = call i32 @puts(ptr noundef @.str.5)
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  br label %9, !llvm.loop !12

50:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %51 = load i32, ptr %1, align 4
  ret i32 %51
}

; 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}
!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 [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.5 = 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
  %.not13 = icmp eq i64 %5, 0
  br i1 %.not13, label %._crit_edge16, label %.lr.ph15

.lr.ph15:                                         ; preds = %0, %._crit_edge
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %8 = load i64, ptr %2, align 8, !tbaa !5
  %9 = icmp eq i64 %8, 1
  %10 = load i64, ptr %3, align 8, !tbaa !5
  br i1 %9, label %11, label %.preheader

11:                                               ; preds = %.lr.ph15
  %12 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i64 noundef %10)
  br label %18

.preheader:                                       ; preds = %.lr.ph15, %.preheader
  %.09 = phi i64 [ %.08, %.preheader ], [ 0, %.lr.ph15 ]
  %.08 = phi i64 [ %13, %.preheader ], [ 1, %.lr.ph15 ]
  %.not11 = icmp sgt i64 %.08, %10
  %13 = shl nsw i64 %.08, 1
  br i1 %.not11, label %14, label %.preheader, !llvm.loop !9

14:                                               ; preds = %.preheader
  %15 = add nsw i64 %.09, -1
  %reass.sub = sub i64 %10, %.09
  %16 = add i64 %reass.sub, 1
  %17 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i64 noundef %15, i64 noundef %16)
  br label %18

18:                                               ; preds = %14, %11
  %19 = load i64, ptr %2, align 8, !tbaa !5
  %20 = icmp sgt i64 %19, 2
  br i1 %20, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %18
  %21 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.5)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %22 = load i64, ptr %1, align 8, !tbaa !5
  %23 = add nsw i64 %22, -1
  store i64 %23, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %22, 0
  br i1 %.not, label %._crit_edge16, label %.lr.ph15, !llvm.loop !11

.lr.ph:                                           ; preds = %18, %.lr.ph
  %.012 = phi i64 [ %25, %.lr.ph ], [ 2, %18 ]
  %24 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4)
  %25 = add nuw nsw i64 %.012, 1
  %26 = load i64, ptr %2, align 8, !tbaa !5
  %27 = icmp slt i64 %25, %26
  br i1 %27, label %.lr.ph, label %._crit_edge, !llvm.loop !12

._crit_edge16:                                    ; 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 = distinct !{!12, !10}


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