; LLVM IR from DionysiosB/CodeForces :: 1300-1399 (1370C-NumberGame)

; 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 [14 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [10 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 i8, align 1
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  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 = %61, %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 %66

13:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %14 = 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
  br label %15

15:                                               ; preds = %19, %13
  %16 = load i64, ptr %3, align 8, !tbaa !5
  %17 = srem i64 %16, 2
  %18 = icmp eq i64 %17, 0
  br i1 %18, label %19, label %24

19:                                               ; preds = %15
  %20 = load i64, ptr %3, align 8, !tbaa !5
  %21 = sdiv i64 %20, 2
  store i64 %21, ptr %3, align 8, !tbaa !5
  %22 = load i64, ptr %4, align 8, !tbaa !5
  %23 = add nsw i64 %22, 1
  store i64 %23, ptr %4, align 8, !tbaa !5
  br label %15, !llvm.loop !9

24:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 1, ptr %5) #3
  store i8 0, ptr %5, align 1, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 2, ptr %6, align 8, !tbaa !5
  br label %25

25:                                               ; preds = %39, %24
  %26 = load i64, ptr %6, align 8, !tbaa !5
  %27 = load i64, ptr %6, align 8, !tbaa !5
  %28 = mul nsw i64 %26, %27
  %29 = load i64, ptr %3, align 8, !tbaa !5
  %30 = icmp sle i64 %28, %29
  br i1 %30, label %32, label %31

31:                                               ; preds = %25
  store i32 6, ptr %7, align 4
  br label %42

32:                                               ; preds = %25
  %33 = load i64, ptr %3, align 8, !tbaa !5
  %34 = load i64, ptr %6, align 8, !tbaa !5
  %35 = srem i64 %33, %34
  %36 = icmp eq i64 %35, 0
  br i1 %36, label %37, label %38

37:                                               ; preds = %32
  store i8 1, ptr %5, align 1, !tbaa !11
  store i32 6, ptr %7, align 4
  br label %42

38:                                               ; preds = %32
  br label %39

39:                                               ; preds = %38
  %40 = load i64, ptr %6, align 8, !tbaa !5
  %41 = add nsw i64 %40, 1
  store i64 %41, ptr %6, align 8, !tbaa !5
  br label %25, !llvm.loop !13

42:                                               ; preds = %37, %31
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %43

43:                                               ; preds = %42
  %44 = load i64, ptr %3, align 8, !tbaa !5
  %45 = icmp eq i64 %44, 1
  br i1 %45, label %46, label %49

46:                                               ; preds = %43
  %47 = load i64, ptr %4, align 8, !tbaa !5
  %48 = icmp ne i64 %47, 1
  br i1 %48, label %61, label %49

49:                                               ; preds = %46, %43
  %50 = load i64, ptr %3, align 8, !tbaa !5
  %51 = icmp ne i64 %50, 1
  br i1 %51, label %52, label %59

52:                                               ; preds = %49
  %53 = load i64, ptr %4, align 8, !tbaa !5
  %54 = icmp eq i64 %53, 1
  br i1 %54, label %55, label %59

55:                                               ; preds = %52
  %56 = load i8, ptr %5, align 1, !tbaa !11, !range !14, !noundef !15
  %57 = trunc i8 %56 to i1
  %58 = xor i1 %57, true
  br label %59

59:                                               ; preds = %55, %52, %49
  %60 = phi i1 [ false, %52 ], [ false, %49 ], [ %58, %55 ]
  br label %61

61:                                               ; preds = %59, %46
  %62 = phi i1 [ true, %46 ], [ %60, %59 ]
  %63 = zext i1 %62 to i64
  %64 = select i1 %62, ptr @.str.1, ptr @.str.2
  %65 = call i32 @puts(ptr noundef %64)
  call void @llvm.lifetime.end.p0(i64 1, 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 %9, !llvm.loop !16

66:                                               ; preds = %9
  store i32 0, ptr %1, align 4
  store i32 1, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %67 = load i32, ptr %1, align 4
  ret i32 %67
}

; 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 @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", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"bool", !7, i64 0}
!13 = distinct !{!13, !10}
!14 = !{i8 0, i8 2}
!15 = !{}
!16 = distinct !{!16, !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 [14 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [10 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
  %.not27 = icmp eq i64 %4, 0
  br i1 %.not27, label %._crit_edge30, label %.lr.ph29

.lr.ph29:                                         ; preds = %0, %24
  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)
  %.promoted = load i64, ptr %2, align 8, !tbaa !5
  %7 = and i64 %.promoted, 1
  %8 = icmp eq i64 %7, 0
  br i1 %8, label %.lr.ph, label %.preheader

..preheader_crit_edge:                            ; preds = %.lr.ph
  store i64 %10, ptr %2, align 8, !tbaa !5
  br label %.preheader

.preheader:                                       ; preds = %..preheader_crit_edge, %.lr.ph29
  %.013.lcssa = phi i64 [ %11, %..preheader_crit_edge ], [ 0, %.lr.ph29 ]
  %.lcssa = phi i64 [ %10, %..preheader_crit_edge ], [ %.promoted, %.lr.ph29 ]
  %.not15.not20 = icmp slt i64 %.lcssa, 4
  br i1 %.not15.not20, label %._crit_edge, label %.lr.ph23

.lr.ph:                                           ; preds = %.lr.ph29, %.lr.ph
  %.01317 = phi i64 [ %11, %.lr.ph ], [ 0, %.lr.ph29 ]
  %9 = phi i64 [ %10, %.lr.ph ], [ %.promoted, %.lr.ph29 ]
  %10 = ashr exact i64 %9, 1
  %11 = add nuw nsw i64 %.01317, 1
  %12 = and i64 %9, 2
  %13 = icmp eq i64 %12, 0
  br i1 %13, label %.lr.ph, label %..preheader_crit_edge, !llvm.loop !9

14:                                               ; preds = %.lr.ph23
  %15 = add nuw nsw i64 %.021, 1
  %16 = mul nuw nsw i64 %15, %15
  %.not15.not = icmp sgt i64 %16, %.lcssa
  br i1 %.not15.not, label %._crit_edge, label %.lr.ph23, !llvm.loop !11

.lr.ph23:                                         ; preds = %.preheader, %14
  %.021 = phi i64 [ %15, %14 ], [ 2, %.preheader ]
  %17 = urem i64 %.lcssa, %.021
  %.not35 = icmp ne i64 %17, 0
  br i1 %.not35, label %14, label %._crit_edge

._crit_edge:                                      ; preds = %14, %.lr.ph23, %.preheader
  %.not15.not.lcssa = phi i1 [ true, %.preheader ], [ %.not35, %.lr.ph23 ], [ %.not35, %14 ]
  %18 = icmp eq i64 %.lcssa, 1
  %19 = icmp ne i64 %.013.lcssa, 1
  %or.cond = select i1 %18, i1 %19, i1 false
  br i1 %or.cond, label %.thread, label %20

20:                                               ; preds = %._crit_edge
  %21 = icmp ne i64 %.lcssa, 1
  %22 = icmp eq i64 %.013.lcssa, 1
  %or.cond3 = select i1 %21, i1 %22, i1 false
  %or.cond3.fr = freeze i1 %or.cond3
  %23 = and i1 %or.cond3.fr, %.not15.not.lcssa
  br i1 %23, label %.thread, label %24

.thread:                                          ; preds = %._crit_edge, %20
  br label %24

24:                                               ; preds = %20, %.thread
  %25 = phi ptr [ @.str.1, %.thread ], [ @.str.2, %20 ]
  %26 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %25)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %27 = load i64, ptr %1, align 8, !tbaa !5
  %28 = add nsw i64 %27, -1
  store i64 %28, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %27, 0
  br i1 %.not, label %._crit_edge30, label %.lr.ph29, !llvm.loop !12

._crit_edge30:                                    ; preds = %24, %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: 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", !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,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopInstSimplifyPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass