; LLVM IR from DionysiosB/CodeForces :: 1300-1399 (1338A-PoweredAddition)

; 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 [5 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 i64, align 8
  %10 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %12

12:                                               ; preds = %58, %0
  %13 = load i64, ptr %2, align 8, !tbaa !5
  %14 = add nsw i64 %13, -1
  store i64 %14, ptr %2, align 8, !tbaa !5
  %15 = icmp ne i64 %13, 0
  br i1 %15, label %16, label %61

16:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %17 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %18 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %4)
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %19 = load i64, ptr %4, align 8, !tbaa !5
  store i64 %19, 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
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  store i64 1, ptr %7, align 8, !tbaa !5
  br label %20

20:                                               ; preds = %46, %16
  %21 = load i64, ptr %7, align 8, !tbaa !5
  %22 = load i64, ptr %3, align 8, !tbaa !5
  %23 = icmp slt i64 %21, %22
  br i1 %23, label %25, label %24

24:                                               ; preds = %20
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  br label %49

25:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %26 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %8)
  %27 = load i64, ptr %8, align 8, !tbaa !5
  %28 = load i64, ptr %5, align 8, !tbaa !5
  %29 = icmp sgt i64 %27, %28
  br i1 %29, label %30, label %32

30:                                               ; preds = %25
  %31 = load i64, ptr %8, align 8, !tbaa !5
  store i64 %31, ptr %5, align 8, !tbaa !5
  br label %45

32:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %33 = load i64, ptr %5, align 8, !tbaa !5
  %34 = load i64, ptr %8, align 8, !tbaa !5
  %35 = sub nsw i64 %33, %34
  store i64 %35, ptr %9, align 8, !tbaa !5
  %36 = load i64, ptr %6, align 8, !tbaa !5
  %37 = load i64, ptr %9, align 8, !tbaa !5
  %38 = icmp sgt i64 %36, %37
  br i1 %38, label %39, label %41

39:                                               ; preds = %32
  %40 = load i64, ptr %6, align 8, !tbaa !5
  br label %43

41:                                               ; preds = %32
  %42 = load i64, ptr %9, align 8, !tbaa !5
  br label %43

43:                                               ; preds = %41, %39
  %44 = phi i64 [ %40, %39 ], [ %42, %41 ]
  store i64 %44, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  br label %45

45:                                               ; preds = %43, %30
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br label %46

46:                                               ; preds = %45
  %47 = load i64, ptr %7, align 8, !tbaa !5
  %48 = add nsw i64 %47, 1
  store i64 %48, ptr %7, align 8, !tbaa !5
  br label %20, !llvm.loop !9

49:                                               ; preds = %24
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  store i64 0, ptr %10, align 8, !tbaa !5
  br label %50

50:                                               ; preds = %53, %49
  %51 = load i64, ptr %6, align 8, !tbaa !5
  %52 = icmp ne i64 %51, 0
  br i1 %52, label %53, label %58

53:                                               ; preds = %50
  %54 = load i64, ptr %10, align 8, !tbaa !5
  %55 = add nsw i64 %54, 1
  store i64 %55, ptr %10, align 8, !tbaa !5
  %56 = load i64, ptr %6, align 8, !tbaa !5
  %57 = sdiv i64 %56, 2
  store i64 %57, ptr %6, align 8, !tbaa !5
  br label %50, !llvm.loop !11

58:                                               ; preds = %50
  %59 = load i64, ptr %10, align 8, !tbaa !5
  %60 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef %59)
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #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
  br label %12, !llvm.loop !12

61:                                               ; preds = %12
  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"}
!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 [5 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
  %4 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #4
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %6 = load i64, ptr %1, align 8, !tbaa !5
  %7 = add nsw i64 %6, -1
  store i64 %7, ptr %1, align 8, !tbaa !5
  %.not27 = icmp eq i64 %6, 0
  br i1 %.not27, label %._crit_edge30, label %.lr.ph29

.lr.ph29:                                         ; preds = %0, %._crit_edge
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #4
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %3)
  %10 = load i64, ptr %2, align 8, !tbaa !5
  %11 = icmp sgt i64 %10, 1
  br i1 %11, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %.lr.ph29
  %12 = load i64, ptr %3, align 8, !tbaa !5
  br label %.lr.ph

.preheader:                                       ; preds = %.lr.ph
  %.not1822 = icmp eq i64 %.115, 0
  br i1 %.not1822, label %._crit_edge, label %.lr.ph25

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %.01221 = phi i64 [ %.1, %.lr.ph ], [ %12, %.lr.ph.preheader ]
  %.01320 = phi i64 [ %18, %.lr.ph ], [ 1, %.lr.ph.preheader ]
  %.01419 = phi i64 [ %.115, %.lr.ph ], [ 0, %.lr.ph.preheader ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %4)
  %14 = load i64, ptr %4, align 8, !tbaa !5
  %15 = icmp sgt i64 %14, %.01221
  %16 = sub nsw i64 %.01221, %14
  %17 = call i64 @llvm.smax.i64(i64 %.01419, i64 %16)
  %.115 = select i1 %15, i64 %.01419, i64 %17
  %.1 = call i64 @llvm.smax.i64(i64 %14, i64 %.01221)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  %18 = add nuw nsw i64 %.01320, 1
  %19 = load i64, ptr %2, align 8, !tbaa !5
  %20 = icmp slt i64 %18, %19
  br i1 %20, label %.lr.ph, label %.preheader, !llvm.loop !9

.lr.ph25:                                         ; preds = %.preheader, %.lr.ph25
  %.024 = phi i64 [ %21, %.lr.ph25 ], [ 0, %.preheader ]
  %.223 = phi i64 [ %22, %.lr.ph25 ], [ %.115, %.preheader ]
  %21 = add nuw nsw i64 %.024, 1
  %22 = lshr i64 %.223, 1
  %.not18 = icmp ult i64 %.223, 2
  br i1 %.not18, label %._crit_edge, label %.lr.ph25, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph25, %.lr.ph29, %.preheader
  %.0.lcssa = phi i64 [ 0, %.preheader ], [ 0, %.lr.ph29 ], [ %21, %.lr.ph25 ]
  %23 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef %.0.lcssa)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #4
  %24 = load i64, ptr %1, align 8, !tbaa !5
  %25 = add nsw i64 %24, -1
  store i64 %25, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %24, 0
  br i1 %.not, label %._crit_edge30, label %.lr.ph29, !llvm.loop !12

._crit_edge30:                                    ; preds = %._crit_edge, %0
  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.smax.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"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


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