; LLVM IR from DionysiosB/CodeForces :: 1600-1699 (1688B-PtchoulisMagicalTalisman)

; 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 = %57, %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 %68

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
  store i64 0, ptr %4, align 8, !tbaa !5
  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 1000, 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 %18

18:                                               ; preds = %54, %16
  %19 = load i64, ptr %7, align 8, !tbaa !5
  %20 = load i64, ptr %3, align 8, !tbaa !5
  %21 = icmp slt i64 %19, %20
  br i1 %21, label %23, label %22

22:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  br label %57

23:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %24 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %8)
  %25 = load i64, ptr %8, align 8, !tbaa !5
  %26 = srem i64 %25, 2
  %27 = icmp ne i64 %26, 0
  br i1 %27, label %28, label %31

28:                                               ; preds = %23
  %29 = load i64, ptr %4, align 8, !tbaa !5
  %30 = add nsw i64 %29, 1
  store i64 %30, ptr %4, align 8, !tbaa !5
  br label %53

31:                                               ; preds = %23
  %32 = load i64, ptr %5, align 8, !tbaa !5
  %33 = add nsw i64 %32, 1
  store i64 %33, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  store i64 0, ptr %9, align 8, !tbaa !5
  br label %34

34:                                               ; preds = %38, %31
  %35 = load i64, ptr %8, align 8, !tbaa !5
  %36 = srem i64 %35, 2
  %37 = icmp eq i64 %36, 0
  br i1 %37, label %38, label %43

38:                                               ; preds = %34
  %39 = load i64, ptr %8, align 8, !tbaa !5
  %40 = sdiv i64 %39, 2
  store i64 %40, ptr %8, align 8, !tbaa !5
  %41 = load i64, ptr %9, align 8, !tbaa !5
  %42 = add nsw i64 %41, 1
  store i64 %42, ptr %9, align 8, !tbaa !5
  br label %34, !llvm.loop !9

43:                                               ; preds = %34
  %44 = load i64, ptr %6, align 8, !tbaa !5
  %45 = load i64, ptr %9, align 8, !tbaa !5
  %46 = icmp slt i64 %44, %45
  br i1 %46, label %47, label %49

47:                                               ; preds = %43
  %48 = load i64, ptr %6, align 8, !tbaa !5
  br label %51

49:                                               ; preds = %43
  %50 = load i64, ptr %9, align 8, !tbaa !5
  br label %51

51:                                               ; preds = %49, %47
  %52 = phi i64 [ %48, %47 ], [ %50, %49 ]
  store i64 %52, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  br label %53

53:                                               ; preds = %51, %28
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br label %54

54:                                               ; preds = %53
  %55 = load i64, ptr %7, align 8, !tbaa !5
  %56 = add nsw i64 %55, 1
  store i64 %56, ptr %7, align 8, !tbaa !5
  br label %18, !llvm.loop !11

57:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %58 = load i64, ptr %5, align 8, !tbaa !5
  %59 = load i64, ptr %4, align 8, !tbaa !5
  %60 = icmp eq i64 %59, 0
  %61 = zext i1 %60 to i64
  %62 = load i64, ptr %6, align 8, !tbaa !5
  %63 = sub nsw i64 %62, 1
  %64 = mul nsw i64 %61, %63
  %65 = add nsw i64 %58, %64
  store i64 %65, ptr %10, align 8, !tbaa !5
  %66 = load i64, ptr %10, align 8, !tbaa !5
  %67 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef %66)
  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

68:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %69 = load i32, ptr %1, align 4
  ret i32 %69
}

; 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
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #4
  %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
  %.not32 = icmp eq i64 %5, 0
  br i1 %.not32, label %._crit_edge35, label %.lr.ph34

.lr.ph34:                                         ; preds = %0, %._crit_edge28.thread
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #4
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  %8 = load i64, ptr %2, align 8, !tbaa !5
  %9 = icmp sgt i64 %8, 0
  br i1 %9, label %.lr.ph27, label %._crit_edge28.thread

._crit_edge28:                                    ; preds = %30
  %10 = icmp eq i64 %.1.fr, 0
  %11 = add nsw i64 %.117, -1
  %spec.select = select i1 %10, i64 %11, i64 0
  %12 = add nsw i64 %spec.select, %.119
  br label %._crit_edge28.thread

._crit_edge28.thread:                             ; preds = %._crit_edge28, %.lr.ph34
  %13 = phi i64 [ 999, %.lr.ph34 ], [ %12, %._crit_edge28 ]
  %14 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef %13)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #4
  %15 = load i64, ptr %1, align 8, !tbaa !5
  %16 = add nsw i64 %15, -1
  store i64 %16, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %15, 0
  br i1 %.not, label %._crit_edge35, label %.lr.ph34, !llvm.loop !9

.lr.ph27:                                         ; preds = %.lr.ph34, %30
  %.025 = phi i64 [ %.1.fr, %30 ], [ 0, %.lr.ph34 ]
  %.01524 = phi i64 [ %31, %30 ], [ 0, %.lr.ph34 ]
  %.01623 = phi i64 [ %.117, %30 ], [ 1000, %.lr.ph34 ]
  %.01822 = phi i64 [ %.119, %30 ], [ 0, %.lr.ph34 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  %17 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %3)
  %18 = load i64, ptr %3, align 8, !tbaa !5
  %19 = and i64 %18, 1
  %.not20 = icmp eq i64 %19, 0
  br i1 %.not20, label %.lr.ph.preheader, label %20

20:                                               ; preds = %.lr.ph27
  %21 = add nsw i64 %.025, 1
  br label %30

.lr.ph.preheader:                                 ; preds = %.lr.ph27
  %22 = add nsw i64 %.01822, 1
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %.01421 = phi i64 [ %25, %.lr.ph ], [ 0, %.lr.ph.preheader ]
  %23 = phi i64 [ %24, %.lr.ph ], [ %18, %.lr.ph.preheader ]
  %24 = ashr exact i64 %23, 1
  %25 = add nuw nsw i64 %.01421, 1
  %26 = and i64 %23, 2
  %27 = icmp eq i64 %26, 0
  br i1 %27, label %.lr.ph, label %28, !llvm.loop !11

28:                                               ; preds = %.lr.ph
  %29 = call i64 @llvm.smin.i64(i64 %.01623, i64 %25)
  br label %30

30:                                               ; preds = %28, %20
  %.119 = phi i64 [ %.01822, %20 ], [ %22, %28 ]
  %.117 = phi i64 [ %.01623, %20 ], [ %29, %28 ]
  %.1 = phi i64 [ %21, %20 ], [ %.025, %28 ]
  %.1.fr = freeze i64 %.1
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  %31 = add nuw nsw i64 %.01524, 1
  %32 = load i64, ptr %2, align 8, !tbaa !5
  %33 = icmp slt i64 %31, %32
  br i1 %33, label %.lr.ph27, label %._crit_edge28, !llvm.loop !12

._crit_edge35:                                    ; preds = %._crit_edge28.thread, %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.smin.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,DSEPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SCCPPass,SROAPass,SimplifyCFGPass