; LLVM IR from tangjz/acm-icpc :: codeforces/complete (535A)

; 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"

@out = external dso_local global [20 x ptr], align 16
@buf = external dso_local global [10 x ptr], align 16
@.str.29 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.30 = external hidden unnamed_addr constant [7 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
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.29, ptr noundef %2)
  %4 = load i32, ptr %2, align 4, !tbaa !5
  %5 = icmp slt i32 %4, 20
  br i1 %5, label %6, label %12

6:                                                ; preds = %0
  %7 = load i32, ptr %2, align 4, !tbaa !5
  %8 = sext i32 %7 to i64
  %9 = getelementptr inbounds [20 x ptr], ptr @out, i64 0, i64 %8
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  %11 = call i32 @puts(ptr noundef %10)
  br label %36

12:                                               ; preds = %0
  %13 = load i32, ptr %2, align 4, !tbaa !5
  %14 = srem i32 %13, 10
  %15 = icmp eq i32 %14, 0
  br i1 %15, label %16, label %23

16:                                               ; preds = %12
  %17 = load i32, ptr %2, align 4, !tbaa !5
  %18 = sdiv i32 %17, 10
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds [10 x ptr], ptr @buf, i64 0, i64 %19
  %21 = load ptr, ptr %20, align 8, !tbaa !9
  %22 = call i32 @puts(ptr noundef %21)
  br label %35

23:                                               ; preds = %12
  %24 = load i32, ptr %2, align 4, !tbaa !5
  %25 = sdiv i32 %24, 10
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds [10 x ptr], ptr @buf, i64 0, i64 %26
  %28 = load ptr, ptr %27, align 8, !tbaa !9
  %29 = load i32, ptr %2, align 4, !tbaa !5
  %30 = srem i32 %29, 10
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds [20 x ptr], ptr @out, i64 0, i64 %31
  %33 = load ptr, ptr %32, align 8, !tbaa !9
  %34 = call i32 (ptr, ...) @printf(ptr noundef @.str.30, ptr noundef %28, ptr noundef %33)
  br label %35

35:                                               ; preds = %23, %16
  br label %36

36:                                               ; preds = %35, %6
  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 @puts(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 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}


; 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"

@out = external dso_local local_unnamed_addr global [20 x ptr], align 16
@buf = external dso_local local_unnamed_addr global [10 x ptr], align 16
@.str.29 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.30 = external hidden unnamed_addr constant [7 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.29, ptr noundef nonnull %1)
  %3 = load i32, ptr %1, align 4, !tbaa !5
  %4 = icmp slt i32 %3, 20
  br i1 %4, label %5, label %10

5:                                                ; preds = %0
  %6 = sext i32 %3 to i64
  %7 = getelementptr inbounds [20 x ptr], ptr @out, i64 0, i64 %6
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  %9 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %8)
  br label %24

10:                                               ; preds = %0
  %11 = urem i32 %3, 10
  %12 = icmp eq i32 %11, 0
  %13 = udiv i32 %3, 10
  %14 = zext nneg i32 %13 to i64
  %15 = getelementptr inbounds [10 x ptr], ptr @buf, i64 0, i64 %14
  %16 = load ptr, ptr %15, align 8, !tbaa !9
  br i1 %12, label %17, label %19

17:                                               ; preds = %10
  %18 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %16)
  br label %24

19:                                               ; preds = %10
  %20 = zext nneg i32 %11 to i64
  %21 = getelementptr inbounds [20 x ptr], ptr @out, i64 0, i64 %20
  %22 = load ptr, ptr %21, align 8, !tbaa !9
  %23 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.30, ptr noundef %16, ptr noundef %22)
  br label %24

24:                                               ; preds = %17, %19, %5
  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 @puts(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 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass