; LLVM IR from AnneLivia/Competitive-Programming :: Online Judges/Neps Academy/Zip (OBI2017) (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 [8 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.2 = 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 i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  %8 = 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)
  %9 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %8, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %10 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %9, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %11 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %10, ptr noundef nonnull align 4 dereferenceable(4) %5)
  %12 = load i32, ptr %2, align 4, !tbaa !5
  %13 = add nsw i32 %12, 1
  %14 = load i32, ptr %3, align 4, !tbaa !5
  %15 = icmp eq i32 %13, %14
  br i1 %15, label %21, label %16

16:                                               ; preds = %0
  %17 = load i32, ptr %2, align 4, !tbaa !5
  %18 = sub nsw i32 %17, 1
  %19 = load i32, ptr %3, align 4, !tbaa !5
  %20 = icmp eq i32 %18, %19
  br i1 %20, label %21, label %26

21:                                               ; preds = %16, %0
  %22 = load i32, ptr %2, align 4, !tbaa !5
  %23 = load i32, ptr %3, align 4, !tbaa !5
  %24 = add nsw i32 %22, %23
  %25 = mul nsw i32 3, %24
  store i32 %25, ptr %6, align 4, !tbaa !5
  br label %40

26:                                               ; preds = %16
  %27 = load i32, ptr %2, align 4, !tbaa !5
  %28 = load i32, ptr %3, align 4, !tbaa !5
  %29 = icmp eq i32 %27, %28
  br i1 %29, label %30, label %35

30:                                               ; preds = %26
  %31 = load i32, ptr %2, align 4, !tbaa !5
  %32 = load i32, ptr %3, align 4, !tbaa !5
  %33 = add nsw i32 %31, %32
  %34 = mul nsw i32 2, %33
  store i32 %34, ptr %6, align 4, !tbaa !5
  br label %39

35:                                               ; preds = %26
  %36 = load i32, ptr %2, align 4, !tbaa !5
  %37 = load i32, ptr %3, align 4, !tbaa !5
  %38 = add nsw i32 %36, %37
  store i32 %38, ptr %6, align 4, !tbaa !5
  br label %39

39:                                               ; preds = %35, %30
  br label %40

40:                                               ; preds = %39, %21
  %41 = load i32, ptr %4, align 4, !tbaa !5
  %42 = add nsw i32 %41, 1
  %43 = load i32, ptr %5, align 4, !tbaa !5
  %44 = icmp eq i32 %42, %43
  br i1 %44, label %50, label %45

45:                                               ; preds = %40
  %46 = load i32, ptr %4, align 4, !tbaa !5
  %47 = sub nsw i32 %46, 1
  %48 = load i32, ptr %5, align 4, !tbaa !5
  %49 = icmp eq i32 %47, %48
  br i1 %49, label %50, label %55

50:                                               ; preds = %45, %40
  %51 = load i32, ptr %4, align 4, !tbaa !5
  %52 = load i32, ptr %5, align 4, !tbaa !5
  %53 = add nsw i32 %51, %52
  %54 = mul nsw i32 3, %53
  store i32 %54, ptr %7, align 4, !tbaa !5
  br label %69

55:                                               ; preds = %45
  %56 = load i32, ptr %4, align 4, !tbaa !5
  %57 = load i32, ptr %5, align 4, !tbaa !5
  %58 = icmp eq i32 %56, %57
  br i1 %58, label %59, label %64

59:                                               ; preds = %55
  %60 = load i32, ptr %4, align 4, !tbaa !5
  %61 = load i32, ptr %5, align 4, !tbaa !5
  %62 = add nsw i32 %60, %61
  %63 = mul nsw i32 2, %62
  store i32 %63, ptr %7, align 4, !tbaa !5
  br label %68

64:                                               ; preds = %55
  %65 = load i32, ptr %4, align 4, !tbaa !5
  %66 = load i32, ptr %5, align 4, !tbaa !5
  %67 = add nsw i32 %65, %66
  store i32 %67, ptr %7, align 4, !tbaa !5
  br label %68

68:                                               ; preds = %64, %59
  br label %69

69:                                               ; preds = %68, %50
  %70 = load i32, ptr %7, align 4, !tbaa !5
  %71 = load i32, ptr %6, align 4, !tbaa !5
  %72 = icmp eq i32 %70, %71
  br i1 %72, label %73, label %75

73:                                               ; preds = %69
  %74 = 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 %84

75:                                               ; preds = %69
  %76 = load i32, ptr %7, align 4, !tbaa !5
  %77 = load i32, ptr %6, align 4, !tbaa !5
  %78 = icmp sgt i32 %76, %77
  br i1 %78, label %79, label %81

79:                                               ; preds = %75
  %80 = 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 %83

81:                                               ; preds = %75
  %82 = 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 %83

83:                                               ; preds = %81, %79
  br label %84

84:                                               ; preds = %83, %73
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  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 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 [8 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #4
  %5 = 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)
  %6 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %5, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %7 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %6, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %8 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %7, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %9 = load i32, ptr %1, align 4, !tbaa !5
  %10 = add nsw i32 %9, 1
  %11 = load i32, ptr %2, align 4, !tbaa !5
  %12 = icmp eq i32 %10, %11
  %13 = add nsw i32 %9, -1
  %14 = icmp eq i32 %13, %11
  %or.cond = select i1 %12, i1 true, i1 %14
  br i1 %or.cond, label %15, label %18

15:                                               ; preds = %0
  %16 = add nsw i32 %11, %9
  %17 = mul nsw i32 %16, 3
  br label %24

18:                                               ; preds = %0
  %19 = icmp eq i32 %9, %11
  br i1 %19, label %20, label %22

20:                                               ; preds = %18
  %21 = shl i32 %9, 2
  br label %24

22:                                               ; preds = %18
  %23 = add nsw i32 %11, %9
  br label %24

24:                                               ; preds = %20, %22, %15
  %.04 = phi i32 [ %17, %15 ], [ %21, %20 ], [ %23, %22 ]
  %25 = load i32, ptr %3, align 4, !tbaa !5
  %26 = add nsw i32 %25, 1
  %27 = load i32, ptr %4, align 4, !tbaa !5
  %28 = icmp eq i32 %26, %27
  %29 = add nsw i32 %25, -1
  %30 = icmp eq i32 %29, %27
  %or.cond12 = select i1 %28, i1 true, i1 %30
  br i1 %or.cond12, label %31, label %34

31:                                               ; preds = %24
  %32 = add nsw i32 %27, %25
  %33 = mul nsw i32 %32, 3
  br label %40

34:                                               ; preds = %24
  %35 = icmp eq i32 %25, %27
  br i1 %35, label %36, label %38

36:                                               ; preds = %34
  %37 = shl i32 %25, 2
  br label %40

38:                                               ; preds = %34
  %39 = add nsw i32 %27, %25
  br label %40

40:                                               ; preds = %36, %38, %31
  %.0 = phi i32 [ %33, %31 ], [ %37, %36 ], [ %39, %38 ]
  %41 = icmp eq i32 %.0, %.04
  %42 = icmp sgt i32 %.0, %.04
  %.str.1..str.2 = select i1 %42, ptr @.str.1, ptr @.str.2
  %.str.1.sink = select i1 %41, ptr @.str, ptr %.str.1..str.2
  %43 = 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.sink)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #4
  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,ReassociatePass,SROAPass,SimplifyCFGPass