; LLVM IR from xirc/cp-algorithm :: codeforces/669E (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.BIT = type <{ %"class.std::map", i32, [4 x i8] }>
%"class.std::map" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<std::pair<int, int>, std::pair<const std::pair<int, int>, int>, std::_Select1st<std::pair<const std::pair<int, int>, int>>, std::less<std::pair<int, int>>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<std::pair<int, int>, std::pair<const std::pair<int, int>, int>, std::_Select1st<std::pair<const std::pair<int, int>, int>>, std::less<std::pair<int, int>>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }

@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [9 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 personality ptr @__gxx_personality_v0 {
  %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 %class.BIT, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.start.p0(i64 56, ptr %6) #6
  call void @_ZN3BITC2Ei(ptr noundef nonnull align 8 dereferenceable(52) %6, i32 noundef 1000000001)
  %11 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
          to label %12 unwind label %18

12:                                               ; preds = %0
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #6
  store i32 0, ptr %9, align 4, !tbaa !5
  br label %13

13:                                               ; preds = %61, %12
  %14 = load i32, ptr %9, align 4, !tbaa !5
  %15 = load i32, ptr %2, align 4, !tbaa !5
  %16 = icmp slt i32 %14, %15
  br i1 %16, label %22, label %17

17:                                               ; preds = %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #6
  br label %65

18:                                               ; preds = %0
  %19 = landingpad { ptr, i32 }
          cleanup
  %20 = extractvalue { ptr, i32 } %19, 0
  store ptr %20, ptr %7, align 8
  %21 = extractvalue { ptr, i32 } %19, 1
  store i32 %21, ptr %8, align 4
  br label %67

22:                                               ; preds = %13
  %23 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %3, ptr noundef %4, ptr noundef %5)
          to label %24 unwind label %31

24:                                               ; preds = %22
  %25 = load i32, ptr %3, align 4, !tbaa !5
  %26 = icmp eq i32 %25, 1
  br i1 %26, label %27, label %35

27:                                               ; preds = %24
  %28 = load i32, ptr %4, align 4, !tbaa !5
  %29 = load i32, ptr %5, align 4, !tbaa !5
  invoke void @_ZN3BIT3addEiii(ptr noundef nonnull align 8 dereferenceable(52) %6, i32 noundef %28, i32 noundef %29, i32 noundef 1)
          to label %30 unwind label %31

30:                                               ; preds = %27
  br label %60

31:                                               ; preds = %38, %27, %22
  %32 = landingpad { ptr, i32 }
          cleanup
  %33 = extractvalue { ptr, i32 } %32, 0
  store ptr %33, ptr %7, align 8
  %34 = extractvalue { ptr, i32 } %32, 1
  store i32 %34, ptr %8, align 4
  br label %64

35:                                               ; preds = %24
  %36 = load i32, ptr %3, align 4, !tbaa !5
  %37 = icmp eq i32 %36, 2
  br i1 %37, label %38, label %42

38:                                               ; preds = %35
  %39 = load i32, ptr %4, align 4, !tbaa !5
  %40 = load i32, ptr %5, align 4, !tbaa !5
  invoke void @_ZN3BIT3addEiii(ptr noundef nonnull align 8 dereferenceable(52) %6, i32 noundef %39, i32 noundef %40, i32 noundef -1)
          to label %41 unwind label %31

41:                                               ; preds = %38
  br label %59

42:                                               ; preds = %35
  %43 = load i32, ptr %3, align 4, !tbaa !5
  %44 = icmp eq i32 %43, 3
  br i1 %44, label %45, label %58

45:                                               ; preds = %42
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #6
  %46 = load i32, ptr %4, align 4, !tbaa !5
  %47 = add nsw i32 %46, 1
  %48 = load i32, ptr %5, align 4, !tbaa !5
  %49 = invoke noundef i32 @_ZN3BIT5countEii(ptr noundef nonnull align 8 dereferenceable(52) %6, i32 noundef %47, i32 noundef %48)
          to label %50 unwind label %54

50:                                               ; preds = %45
  store i32 %49, ptr %10, align 4, !tbaa !5
  %51 = load i32, ptr %10, align 4, !tbaa !5
  %52 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %51)
          to label %53 unwind label %54

53:                                               ; preds = %50
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #6
  br label %58

54:                                               ; preds = %50, %45
  %55 = landingpad { ptr, i32 }
          cleanup
  %56 = extractvalue { ptr, i32 } %55, 0
  store ptr %56, ptr %7, align 8
  %57 = extractvalue { ptr, i32 } %55, 1
  store i32 %57, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #6
  br label %64

58:                                               ; preds = %53, %42
  br label %59

59:                                               ; preds = %58, %41
  br label %60

60:                                               ; preds = %59, %30
  br label %61

61:                                               ; preds = %60
  %62 = load i32, ptr %9, align 4, !tbaa !5
  %63 = add nsw i32 %62, 1
  store i32 %63, ptr %9, align 4, !tbaa !5
  br label %13, !llvm.loop !9

64:                                               ; preds = %54, %31
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #6
  br label %67

65:                                               ; preds = %17
  store i32 0, ptr %1, align 4
  call void @_ZN3BITD2Ev(ptr noundef nonnull align 8 dereferenceable(52) %6) #6
  call void @llvm.lifetime.end.p0(i64 56, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  %66 = load i32, ptr %1, align 4
  ret i32 %66

67:                                               ; preds = %64, %18
  call void @_ZN3BITD2Ev(ptr noundef nonnull align 8 dereferenceable(52) %6) #6
  call void @llvm.lifetime.end.p0(i64 56, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  br label %68

68:                                               ; preds = %67
  %69 = load ptr, ptr %7, align 8
  %70 = load i32, ptr %8, align 4
  %71 = insertvalue { ptr, i32 } poison, ptr %69, 0
  %72 = insertvalue { ptr, i32 } %71, i32 %70, 1
  resume { ptr, i32 } %72
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN3BITC2Ei(ptr noundef nonnull align 8 dereferenceable(52), i32 noundef) unnamed_addr #2 align 2

declare i32 @__isoc99_scanf(ptr noundef, ...) #3

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3BIT3addEiii(ptr noundef nonnull align 8 dereferenceable(52), i32 noundef, i32 noundef, i32 noundef) #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN3BIT5countEii(ptr noundef nonnull align 8 dereferenceable(52), i32 noundef, i32 noundef) #4 align 2

declare i32 @printf(ptr noundef, ...) #3

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN3BITD2Ev(ptr noundef nonnull align 8 dereferenceable(52)) unnamed_addr #5 align 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 = { mustprogress 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 #3 = { "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 = { 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 #5 = { inlinehint mustprogress 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 #6 = { 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"}


; 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.BIT = type <{ %"class.std::map", i32, [4 x i8] }>
%"class.std::map" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<std::pair<int, int>, std::pair<const std::pair<int, int>, int>, std::_Select1st<std::pair<const std::pair<int, int>, int>>, std::less<std::pair<int, int>>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<std::pair<int, int>, std::pair<const std::pair<int, int>, int>, std::_Select1st<std::pair<const std::pair<int, int>, int>>, std::less<std::pair<int, int>>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }

@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [9 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() local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca %class.BIT, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #6
  call void @llvm.lifetime.start.p0(i64 56, ptr nonnull %5) #6
  call void @_ZN3BITC2Ei(ptr noundef nonnull align 8 dereferenceable(52) %5, i32 noundef 1000000001)
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %7 = load i32, ptr %1, align 4, !tbaa !5
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %26, %0
  call void @_ZN3BITD2Ev(ptr noundef nonnull align 8 dereferenceable(52) %5) #6
  call void @llvm.lifetime.end.p0(i64 56, ptr nonnull %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  ret i32 0

.lr.ph:                                           ; preds = %0, %26
  %.09 = phi i32 [ %27, %26 ], [ 0, %0 ]
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2, ptr noundef nonnull %3, ptr noundef nonnull %4)
  %10 = load i32, ptr %2, align 4, !tbaa !5
  switch i32 %10, label %26 [
    i32 1, label %.invoke
    i32 2, label %13
    i32 3, label %17
  ]

11:                                               ; preds = %.invoke
  %12 = landingpad { ptr, i32 }
          cleanup
  br label %30

13:                                               ; preds = %.lr.ph
  br label %.invoke

.invoke:                                          ; preds = %.lr.ph, %13
  %14 = phi i32 [ -1, %13 ], [ %10, %.lr.ph ]
  %15 = load i32, ptr %4, align 4, !tbaa !5
  %16 = load i32, ptr %3, align 4, !tbaa !5
  invoke void @_ZN3BIT3addEiii(ptr noundef nonnull align 8 dereferenceable(52) %5, i32 noundef %16, i32 noundef %15, i32 noundef %14)
          to label %26 unwind label %11

17:                                               ; preds = %.lr.ph
  %18 = load i32, ptr %3, align 4, !tbaa !5
  %19 = add nsw i32 %18, 1
  %20 = load i32, ptr %4, align 4, !tbaa !5
  %21 = invoke noundef i32 @_ZN3BIT5countEii(ptr noundef nonnull align 8 dereferenceable(52) %5, i32 noundef %19, i32 noundef %20)
          to label %22 unwind label %24

22:                                               ; preds = %17
  %23 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %21)
  br label %26

24:                                               ; preds = %17
  %25 = landingpad { ptr, i32 }
          cleanup
  br label %30

26:                                               ; preds = %.invoke, %.lr.ph, %22
  %27 = add nuw nsw i32 %.09, 1
  %28 = load i32, ptr %1, align 4, !tbaa !5
  %29 = icmp slt i32 %27, %28
  br i1 %29, label %.lr.ph, label %._crit_edge, !llvm.loop !9

30:                                               ; preds = %24, %11
  %.pn = phi { ptr, i32 } [ %12, %11 ], [ %25, %24 ]
  call void @_ZN3BITD2Ev(ptr noundef nonnull align 8 dereferenceable(52) %5) #6
  call void @llvm.lifetime.end.p0(i64 56, ptr nonnull %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  resume { ptr, i32 } %.pn
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN3BITC2Ei(ptr noundef nonnull align 8 dereferenceable(52), i32 noundef) unnamed_addr #2 align 2

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3BIT3addEiii(ptr noundef nonnull align 8 dereferenceable(52), i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN3BIT5countEii(ptr noundef nonnull align 8 dereferenceable(52), i32 noundef, i32 noundef) local_unnamed_addr #4 align 2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) 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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN3BITD2Ev(ptr noundef nonnull align 8 dereferenceable(52)) unnamed_addr #5 align 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress 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 #3 = { 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 #4 = { 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 #5 = { inlinehint mustprogress 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 #6 = { 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"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass