; LLVM IR from Izaron/ACM-ICPC :: Timus Online Judge/Volume 8/1785. Lost in Localization (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
@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [8 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.8 = 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) #4
  %3 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %4 = load i32, ptr %2, align 4, !tbaa !5
  %5 = icmp sge i32 %4, 1
  br i1 %5, label %6, label %11

6:                                                ; preds = %0
  %7 = load i32, ptr %2, align 4, !tbaa !5
  %8 = icmp sle i32 %7, 4
  br i1 %8, label %9, label %11

9:                                                ; preds = %6
  %10 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str)
  br label %11

11:                                               ; preds = %9, %6, %0
  %12 = load i32, ptr %2, align 4, !tbaa !5
  %13 = icmp sge i32 %12, 5
  br i1 %13, label %14, label %19

14:                                               ; preds = %11
  %15 = load i32, ptr %2, align 4, !tbaa !5
  %16 = icmp sle i32 %15, 9
  br i1 %16, label %17, label %19

17:                                               ; preds = %14
  %18 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.1)
  br label %19

19:                                               ; preds = %17, %14, %11
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = icmp sge i32 %20, 10
  br i1 %21, label %22, label %27

22:                                               ; preds = %19
  %23 = load i32, ptr %2, align 4, !tbaa !5
  %24 = icmp sle i32 %23, 19
  br i1 %24, label %25, label %27

25:                                               ; preds = %22
  %26 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.2)
  br label %27

27:                                               ; preds = %25, %22, %19
  %28 = load i32, ptr %2, align 4, !tbaa !5
  %29 = icmp sge i32 %28, 20
  br i1 %29, label %30, label %35

30:                                               ; preds = %27
  %31 = load i32, ptr %2, align 4, !tbaa !5
  %32 = icmp sle i32 %31, 49
  br i1 %32, label %33, label %35

33:                                               ; preds = %30
  %34 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.3)
  br label %35

35:                                               ; preds = %33, %30, %27
  %36 = load i32, ptr %2, align 4, !tbaa !5
  %37 = icmp sge i32 %36, 50
  br i1 %37, label %38, label %43

38:                                               ; preds = %35
  %39 = load i32, ptr %2, align 4, !tbaa !5
  %40 = icmp sle i32 %39, 99
  br i1 %40, label %41, label %43

41:                                               ; preds = %38
  %42 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.4)
  br label %43

43:                                               ; preds = %41, %38, %35
  %44 = load i32, ptr %2, align 4, !tbaa !5
  %45 = icmp sge i32 %44, 100
  br i1 %45, label %46, label %51

46:                                               ; preds = %43
  %47 = load i32, ptr %2, align 4, !tbaa !5
  %48 = icmp sle i32 %47, 249
  br i1 %48, label %49, label %51

49:                                               ; preds = %46
  %50 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.5)
  br label %51

51:                                               ; preds = %49, %46, %43
  %52 = load i32, ptr %2, align 4, !tbaa !5
  %53 = icmp sge i32 %52, 250
  br i1 %53, label %54, label %59

54:                                               ; preds = %51
  %55 = load i32, ptr %2, align 4, !tbaa !5
  %56 = icmp sle i32 %55, 499
  br i1 %56, label %57, label %59

57:                                               ; preds = %54
  %58 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.6)
  br label %59

59:                                               ; preds = %57, %54, %51
  %60 = load i32, ptr %2, align 4, !tbaa !5
  %61 = icmp sge i32 %60, 500
  br i1 %61, label %62, label %67

62:                                               ; preds = %59
  %63 = load i32, ptr %2, align 4, !tbaa !5
  %64 = icmp sle i32 %63, 999
  br i1 %64, label %65, label %67

65:                                               ; preds = %62
  %66 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.7)
  br label %67

67:                                               ; preds = %65, %62, %59
  %68 = load i32, ptr %2, align 4, !tbaa !5
  %69 = icmp sge i32 %68, 1000
  br i1 %69, label %70, label %72

70:                                               ; preds = %67
  %71 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.8)
  br label %72

72:                                               ; preds = %70, %67
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  %73 = load i32, ptr %1, align 4
  ret i32 %73
}

; 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 @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #3

; 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 = { 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"}


; 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"

%"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
@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [8 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [7 x i8], align 1

; Function Attrs: mustprogress norecurse 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) #4
  %2 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %3 = load i32, ptr %1, align 4
  %4 = add i32 %3, -1
  %or.cond = icmp ult i32 %4, 4
  br i1 %or.cond, label %5, label %7

5:                                                ; preds = %0
  %6 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str)
  %.pre = load i32, ptr %1, align 4
  br label %7

7:                                                ; preds = %5, %0
  %8 = phi i32 [ %.pre, %5 ], [ %3, %0 ]
  %9 = add i32 %8, -5
  %or.cond3 = icmp ult i32 %9, 5
  br i1 %or.cond3, label %10, label %12

10:                                               ; preds = %7
  %11 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.1)
  %.pre16 = load i32, ptr %1, align 4
  br label %12

12:                                               ; preds = %10, %7
  %13 = phi i32 [ %.pre16, %10 ], [ %8, %7 ]
  %14 = add i32 %13, -10
  %or.cond5 = icmp ult i32 %14, 10
  br i1 %or.cond5, label %15, label %17

15:                                               ; preds = %12
  %16 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.2)
  %.pre17 = load i32, ptr %1, align 4
  br label %17

17:                                               ; preds = %15, %12
  %18 = phi i32 [ %.pre17, %15 ], [ %13, %12 ]
  %19 = add i32 %18, -20
  %or.cond7 = icmp ult i32 %19, 30
  br i1 %or.cond7, label %20, label %22

20:                                               ; preds = %17
  %21 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.3)
  %.pre18 = load i32, ptr %1, align 4
  br label %22

22:                                               ; preds = %20, %17
  %23 = phi i32 [ %.pre18, %20 ], [ %18, %17 ]
  %24 = add i32 %23, -50
  %or.cond9 = icmp ult i32 %24, 50
  br i1 %or.cond9, label %25, label %27

25:                                               ; preds = %22
  %26 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.4)
  %.pre19 = load i32, ptr %1, align 4
  br label %27

27:                                               ; preds = %25, %22
  %28 = phi i32 [ %.pre19, %25 ], [ %23, %22 ]
  %29 = add i32 %28, -100
  %or.cond11 = icmp ult i32 %29, 150
  br i1 %or.cond11, label %30, label %32

30:                                               ; preds = %27
  %31 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.5)
  %.pre20 = load i32, ptr %1, align 4
  br label %32

32:                                               ; preds = %30, %27
  %33 = phi i32 [ %.pre20, %30 ], [ %28, %27 ]
  %34 = add i32 %33, -250
  %or.cond13 = icmp ult i32 %34, 250
  br i1 %or.cond13, label %35, label %37

35:                                               ; preds = %32
  %36 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.6)
  %.pre21 = load i32, ptr %1, align 4
  br label %37

37:                                               ; preds = %35, %32
  %38 = phi i32 [ %.pre21, %35 ], [ %33, %32 ]
  %39 = add i32 %38, -500
  %or.cond15 = icmp ult i32 %39, 500
  br i1 %or.cond15, label %40, label %42

40:                                               ; preds = %37
  %41 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.7)
  %.pr = load i32, ptr %1, align 4, !tbaa !5
  br label %42

42:                                               ; preds = %40, %37
  %43 = phi i32 [ %.pr, %40 ], [ %38, %37 ]
  %44 = icmp sgt i32 %43, 999
  br i1 %44, label %45, label %47

45:                                               ; preds = %42
  %46 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.8)
  br label %47

47:                                               ; preds = %45, %42
  call void @llvm.lifetime.end.p0(i64 4, 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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #3

; 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 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 = { mustprogress 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"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,SROAPass,SimplifyCFGPass