; LLVM IR from seikhchilli/codeforces-solution :: 443A (main)

; 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"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i8, align 1
  %4 = alloca [1000 x i8], align 16
  %5 = alloca i32, align 4
  %6 = alloca i8, align 1
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  store i32 1000, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %3) #4
  call void @llvm.lifetime.start.p0(i64 1000, ptr %4) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %9

9:                                                ; preds = %29, %0
  %10 = load i8, ptr %3, align 1, !tbaa !9
  %11 = sext i8 %10 to i32
  %12 = icmp ne i32 %11, 125
  br i1 %12, label %13, label %30

13:                                               ; preds = %9
  %14 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_RS3_(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 1 dereferenceable(1) %3)
  %15 = load i8, ptr %3, align 1, !tbaa !9
  %16 = sext i8 %15 to i32
  %17 = icmp sge i32 %16, 97
  br i1 %17, label %18, label %29

18:                                               ; preds = %13
  %19 = load i8, ptr %3, align 1, !tbaa !9
  %20 = sext i8 %19 to i32
  %21 = icmp sle i32 %20, 122
  br i1 %21, label %22, label %29

22:                                               ; preds = %18
  %23 = load i8, ptr %3, align 1, !tbaa !9
  %24 = load i32, ptr %5, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [1000 x i8], ptr %4, i64 0, i64 %25
  store i8 %23, ptr %26, align 1, !tbaa !9
  %27 = load i32, ptr %5, align 4, !tbaa !5
  %28 = add nsw i32 %27, 1
  store i32 %28, ptr %5, align 4, !tbaa !5
  br label %29

29:                                               ; preds = %22, %18, %13
  br label %9, !llvm.loop !10

30:                                               ; preds = %9
  %31 = load i32, ptr %5, align 4, !tbaa !5
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds [1000 x i8], ptr %4, i64 0, i64 %32
  store i8 0, ptr %33, align 1, !tbaa !9
  %34 = getelementptr inbounds [1000 x i8], ptr %4, i64 0, i64 0
  %35 = getelementptr inbounds [1000 x i8], ptr %4, i64 0, i64 0
  %36 = load i32, ptr %5, align 4, !tbaa !5
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds i8, ptr %35, i64 %37
  call void @_ZSt4sortIPcEvT_S1_(ptr noundef %34, ptr noundef %38)
  call void @llvm.lifetime.start.p0(i64 1, ptr %6) #4
  store i8 65, ptr %6, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 0, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  store i32 0, ptr %8, align 4, !tbaa !5
  br label %39

39:                                               ; preds = %61, %30
  %40 = load i32, ptr %8, align 4, !tbaa !5
  %41 = load i32, ptr %5, align 4, !tbaa !5
  %42 = icmp slt i32 %40, %41
  br i1 %42, label %44, label %43

43:                                               ; preds = %39
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %64

44:                                               ; preds = %39
  %45 = load i32, ptr %8, align 4, !tbaa !5
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds [1000 x i8], ptr %4, i64 0, i64 %46
  %48 = load i8, ptr %47, align 1, !tbaa !9
  %49 = sext i8 %48 to i32
  %50 = load i8, ptr %6, align 1, !tbaa !9
  %51 = sext i8 %50 to i32
  %52 = icmp ne i32 %49, %51
  br i1 %52, label %53, label %60

53:                                               ; preds = %44
  %54 = load i32, ptr %7, align 4, !tbaa !5
  %55 = add nsw i32 %54, 1
  store i32 %55, ptr %7, align 4, !tbaa !5
  %56 = load i32, ptr %8, align 4, !tbaa !5
  %57 = sext i32 %56 to i64
  %58 = getelementptr inbounds [1000 x i8], ptr %4, i64 0, i64 %57
  %59 = load i8, ptr %58, align 1, !tbaa !9
  store i8 %59, ptr %6, align 1, !tbaa !9
  br label %60

60:                                               ; preds = %53, %44
  br label %61

61:                                               ; preds = %60
  %62 = load i32, ptr %8, align 4, !tbaa !5
  %63 = add nsw i32 %62, 1
  store i32 %63, ptr %8, align 4, !tbaa !5
  br label %39, !llvm.loop !12

64:                                               ; preds = %43
  %65 = load i32, ptr %7, align 4, !tbaa !5
  %66 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %65)
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 1000, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  %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 noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_RS3_(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 1 dereferenceable(1)) #2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIPcEvT_S1_(ptr noundef, ptr noundef) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 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 = { inlinehint mustprogress 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 #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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}
!12 = distinct !{!12, !11}


; 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"

; Function Attrs: mustprogress nofree norecurse noreturn nosync nounwind willreturn memory(none) uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  unreachable
}

attributes #0 = { mustprogress nofree norecurse noreturn nosync nounwind willreturn memory(none) 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" }

!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)"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,PostOrderFunctionAttrsPass,ReassociatePass,SCCPPass,SROAPass,SimplifyCFGPass