; LLVM IR from DionysiosB/CodeForces :: 1300-1399 (1337B-KanaAndDragonQuestGame)

; 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 [12 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [3 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
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %7

7:                                                ; preds = %41, %0
  %8 = load i64, ptr %2, align 8, !tbaa !5
  %9 = add nsw i64 %8, -1
  store i64 %9, ptr %2, align 8, !tbaa !5
  %10 = icmp ne i64 %8, 0
  br i1 %10, label %11, label %47

11:                                               ; preds = %7
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %12 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %3, ptr noundef %4, ptr noundef %5)
  br label %13

13:                                               ; preds = %21, %11
  %14 = load i64, ptr %4, align 8, !tbaa !5
  %15 = icmp sgt i64 %14, 0
  br i1 %15, label %16, label %19

16:                                               ; preds = %13
  %17 = load i64, ptr %3, align 8, !tbaa !5
  %18 = icmp sgt i64 %17, 20
  br label %19

19:                                               ; preds = %16, %13
  %20 = phi i1 [ false, %13 ], [ %18, %16 ]
  br i1 %20, label %21, label %27

21:                                               ; preds = %19
  %22 = load i64, ptr %3, align 8, !tbaa !5
  %23 = sdiv i64 %22, 2
  %24 = add nsw i64 %23, 10
  store i64 %24, ptr %3, align 8, !tbaa !5
  %25 = load i64, ptr %4, align 8, !tbaa !5
  %26 = add nsw i64 %25, -1
  store i64 %26, ptr %4, align 8, !tbaa !5
  br label %13, !llvm.loop !9

27:                                               ; preds = %19
  br label %28

28:                                               ; preds = %36, %27
  %29 = load i64, ptr %5, align 8, !tbaa !5
  %30 = icmp sgt i64 %29, 0
  br i1 %30, label %31, label %34

31:                                               ; preds = %28
  %32 = load i64, ptr %3, align 8, !tbaa !5
  %33 = icmp sgt i64 %32, 0
  br label %34

34:                                               ; preds = %31, %28
  %35 = phi i1 [ false, %28 ], [ %33, %31 ]
  br i1 %35, label %36, label %41

36:                                               ; preds = %34
  %37 = load i64, ptr %3, align 8, !tbaa !5
  %38 = sub nsw i64 %37, 10
  store i64 %38, ptr %3, align 8, !tbaa !5
  %39 = load i64, ptr %5, align 8, !tbaa !5
  %40 = add nsw i64 %39, -1
  store i64 %40, ptr %5, align 8, !tbaa !5
  br label %28, !llvm.loop !11

41:                                               ; preds = %34
  %42 = load i64, ptr %3, align 8, !tbaa !5
  %43 = icmp sle i64 %42, 0
  %44 = zext i1 %43 to i64
  %45 = select i1 %43, ptr @.str.2, ptr @.str.3
  %46 = call i32 @puts(ptr noundef %45)
  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 %7, !llvm.loop !12

47:                                               ; preds = %7
  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

declare i32 @puts(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 [12 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [3 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
  %.not10 = icmp eq i64 %6, 0
  br i1 %.not10, label %._crit_edge13, label %.lr.ph12

.lr.ph12:                                         ; preds = %0, %30
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2, ptr noundef nonnull %3, ptr noundef nonnull %4)
  %.promoted = load i64, ptr %3, align 8, !tbaa !5
  %.promoted2 = load i64, ptr %2, align 8
  %9 = icmp sgt i64 %.promoted, 0
  %10 = icmp sgt i64 %.promoted2, 20
  %11 = select i1 %9, i1 %10, i1 false
  br i1 %11, label %.lr.ph, label %.preheader

..preheader_crit_edge:                            ; preds = %.lr.ph
  store i64 %25, ptr %2, align 8, !tbaa !5
  store i64 %26, ptr %3, align 8, !tbaa !5
  br label %.preheader

.preheader:                                       ; preds = %..preheader_crit_edge, %.lr.ph12
  %.promoted6 = phi i64 [ %25, %..preheader_crit_edge ], [ %.promoted2, %.lr.ph12 ]
  %.promoted6.fr = freeze i64 %.promoted6
  %.promoted5 = load i64, ptr %4, align 8, !tbaa !5
  %12 = icmp sgt i64 %.promoted5, 0
  %13 = icmp sgt i64 %.promoted6.fr, 0
  %14 = and i1 %12, %13
  br i1 %14, label %.lr.ph7.preheader, label %30

.lr.ph7.preheader:                                ; preds = %.preheader
  %15 = add nsw i64 %.promoted6.fr, -10
  %16 = call i64 @llvm.usub.sat.i64(i64 %.promoted6.fr, i64 10)
  %17 = add nuw i64 %16, 9
  %18 = udiv i64 %17, 10
  %19 = add nsw i64 %.promoted5, -1
  %umin = call i64 @llvm.umin.i64(i64 %18, i64 %19)
  %.neg = mul i64 %umin, -10
  %20 = add i64 %.neg, %15
  %21 = sub nsw i64 %19, %umin
  store i64 %20, ptr %2, align 8, !tbaa !5
  store i64 %21, ptr %4, align 8, !tbaa !5
  br label %30

.lr.ph:                                           ; preds = %.lr.ph12, %.lr.ph
  %22 = phi i64 [ %26, %.lr.ph ], [ %.promoted, %.lr.ph12 ]
  %23 = phi i64 [ %25, %.lr.ph ], [ %.promoted2, %.lr.ph12 ]
  %24 = lshr i64 %23, 1
  %25 = add nuw nsw i64 %24, 10
  %26 = add nsw i64 %22, -1
  %27 = icmp ugt i64 %22, 1
  %28 = icmp ugt i64 %23, 21
  %29 = select i1 %27, i1 %28, i1 false
  br i1 %29, label %.lr.ph, label %..preheader_crit_edge, !llvm.loop !9

30:                                               ; preds = %.lr.ph7.preheader, %.preheader
  %.lcssa = phi i64 [ %20, %.lr.ph7.preheader ], [ %.promoted6.fr, %.preheader ]
  %31 = icmp slt i64 %.lcssa, 1
  %32 = select i1 %31, ptr @.str.2, ptr @.str.3
  %33 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %32)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #4
  %34 = load i64, ptr %1, align 8, !tbaa !5
  %35 = add nsw i64 %34, -1
  store i64 %35, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %34, 0
  br i1 %.not, label %._crit_edge13, label %.lr.ph12, !llvm.loop !11

._crit_edge13:                                    ; preds = %30, %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: nofree nounwind
declare noundef i32 @puts(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: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.umin.i64(i64, i64) #3

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.usub.sat.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}


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