; LLVM IR from tangjz/acm-icpc :: codeforces/complete (1059C)

; 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 [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 1, ptr %3, align 4, !tbaa !5
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %7

7:                                                ; preds = %32, %0
  %8 = load i32, ptr %2, align 4, !tbaa !5
  %9 = icmp sgt i32 %8, 1
  br i1 %9, label %10, label %39

10:                                               ; preds = %7
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  %11 = load i32, ptr %2, align 4, !tbaa !5
  %12 = load i32, ptr %2, align 4, !tbaa !5
  %13 = ashr i32 %12, 1
  %14 = sdiv i32 %11, %13
  store i32 %14, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 1, ptr %5, align 4, !tbaa !5
  br label %15

15:                                               ; preds = %29, %10
  %16 = load i32, ptr %5, align 4, !tbaa !5
  %17 = load i32, ptr %2, align 4, !tbaa !5
  %18 = icmp sle i32 %16, %17
  br i1 %18, label %20, label %19

19:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %32

20:                                               ; preds = %15
  %21 = load i32, ptr %5, align 4, !tbaa !5
  %22 = load i32, ptr %4, align 4, !tbaa !5
  %23 = srem i32 %21, %22
  %24 = icmp sgt i32 %23, 0
  br i1 %24, label %25, label %28

25:                                               ; preds = %20
  %26 = load i32, ptr %3, align 4, !tbaa !5
  %27 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %26)
  br label %28

28:                                               ; preds = %25, %20
  br label %29

29:                                               ; preds = %28
  %30 = load i32, ptr %5, align 4, !tbaa !5
  %31 = add nsw i32 %30, 1
  store i32 %31, ptr %5, align 4, !tbaa !5
  br label %15, !llvm.loop !9

32:                                               ; preds = %19
  %33 = load i32, ptr %4, align 4, !tbaa !5
  %34 = load i32, ptr %2, align 4, !tbaa !5
  %35 = sdiv i32 %34, %33
  store i32 %35, ptr %2, align 4, !tbaa !5
  %36 = load i32, ptr %4, align 4, !tbaa !5
  %37 = load i32, ptr %3, align 4, !tbaa !5
  %38 = mul nsw i32 %37, %36
  store i32 %38, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  br label %7, !llvm.loop !11

39:                                               ; preds = %7
  %40 = load i32, ptr %3, align 4, !tbaa !5
  %41 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %40)
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 4, 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 @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

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 = !{!"int", !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}


; 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 [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress nofree norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #3
  %2 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %.pr = load i32, ptr %1, align 4, !tbaa !5
  %3 = icmp sgt i32 %.pr, 1
  br i1 %3, label %.lr.ph.preheader, label %._crit_edge18

.lr.ph.preheader:                                 ; preds = %0, %._crit_edge
  %.0915 = phi i32 [ %8, %._crit_edge ], [ 1, %0 ]
  %4 = phi i32 [ %7, %._crit_edge ], [ %.pr, %0 ]
  %5 = lshr i32 %4, 1
  %6 = udiv i32 %4, %5
  br label %.lr.ph

._crit_edge:                                      ; preds = %14
  %7 = sdiv i32 %15, %6
  store i32 %7, ptr %1, align 4, !tbaa !5
  %8 = mul nuw nsw i32 %6, %.0915
  %9 = icmp sgt i32 %7, 1
  br i1 %9, label %.lr.ph.preheader, label %._crit_edge18, !llvm.loop !9

.lr.ph:                                           ; preds = %.lr.ph.preheader, %14
  %10 = phi i32 [ %15, %14 ], [ %4, %.lr.ph.preheader ]
  %.014 = phi i32 [ %16, %14 ], [ 1, %.lr.ph.preheader ]
  %11 = urem i32 %.014, %6
  %.not12 = icmp eq i32 %11, 0
  br i1 %.not12, label %14, label %12

12:                                               ; preds = %.lr.ph
  %13 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %.0915)
  %.pre = load i32, ptr %1, align 4, !tbaa !5
  br label %14

14:                                               ; preds = %.lr.ph, %12
  %15 = phi i32 [ %10, %.lr.ph ], [ %.pre, %12 ]
  %16 = add nuw nsw i32 %.014, 1
  %.not.not = icmp slt i32 %.014, %15
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !11

._crit_edge18:                                    ; preds = %._crit_edge, %0
  %.09.lcssa = phi i32 [ 1, %0 ], [ %8, %._crit_edge ]
  %17 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %.09.lcssa)
  call void @llvm.lifetime.end.p0(i64 4, 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

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 = !{!"int", !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: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass