; LLVM IR from tangjz/acm-icpc :: codeforces/complete/1466A.ll (Z5solvev)

; 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::unordered_set" = type { %"class.std::_Hashtable" }
%"class.std::_Hashtable" = type { ptr, i64, %"struct.std::__detail::_Hash_node_base", i64, %"struct.std::__detail::_Prime_rehash_policy", ptr }
%"struct.std::__detail::_Hash_node_base" = type { ptr }
%"struct.std::__detail::_Prime_rehash_policy" = type { float, i64 }
%"struct.std::pair" = type <{ %"struct.std::__detail::_Node_iterator", i8, [7 x i8] }>
%"struct.std::__detail::_Node_iterator" = type { %"struct.std::__detail::_Node_iterator_base" }
%"struct.std::__detail::_Node_iterator_base" = type { ptr }

@_ZZ5solvevE1a = external hidden global [100001 x i32], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5solvev() #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca %"class.std::unordered_set", align 8
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca %"struct.std::pair", align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #5
  call void @llvm.lifetime.start.p0(i64 56, ptr %2) #5
  call void @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56) %2) #5
  %10 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %1)
          to label %11 unwind label %17

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

12:                                               ; preds = %60, %11
  %13 = load i32, ptr %5, align 4, !tbaa !5
  %14 = load i32, ptr %1, align 4, !tbaa !5
  %15 = icmp slt i32 %13, %14
  br i1 %15, label %21, label %16

16:                                               ; preds = %12
  store i32 2, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  br label %64

17:                                               ; preds = %64, %0
  %18 = landingpad { ptr, i32 }
          cleanup
  %19 = extractvalue { ptr, i32 } %18, 0
  store ptr %19, ptr %3, align 8
  %20 = extractvalue { ptr, i32 } %18, 1
  store i32 %20, ptr %4, align 4
  br label %69

21:                                               ; preds = %12
  %22 = load i32, ptr %5, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds i32, ptr @_ZZ5solvevE1a, i64 %23
  %25 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %24)
          to label %26 unwind label %32

26:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  store i32 0, ptr %7, align 4, !tbaa !5
  br label %27

27:                                               ; preds = %52, %26
  %28 = load i32, ptr %7, align 4, !tbaa !5
  %29 = load i32, ptr %5, align 4, !tbaa !5
  %30 = icmp slt i32 %28, %29
  br i1 %30, label %36, label %31

31:                                               ; preds = %27
  store i32 5, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  br label %59

32:                                               ; preds = %21
  %33 = landingpad { ptr, i32 }
          cleanup
  %34 = extractvalue { ptr, i32 } %33, 0
  store ptr %34, ptr %3, align 8
  %35 = extractvalue { ptr, i32 } %33, 1
  store i32 %35, ptr %4, align 4
  br label %63

36:                                               ; preds = %27
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  %37 = load i32, ptr %5, align 4, !tbaa !5
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds [100001 x i32], ptr @_ZZ5solvevE1a, i64 0, i64 %38
  %40 = load i32, ptr %39, align 4, !tbaa !5
  %41 = load i32, ptr %7, align 4, !tbaa !5
  %42 = sext i32 %41 to i64
  %43 = getelementptr inbounds [100001 x i32], ptr @_ZZ5solvevE1a, i64 0, i64 %42
  %44 = load i32, ptr %43, align 4, !tbaa !5
  %45 = sub nsw i32 %40, %44
  store i32 %45, ptr %8, align 4, !tbaa !5
  %46 = invoke { ptr, i8 } @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE6insertEOi(ptr noundef nonnull align 8 dereferenceable(56) %2, ptr noundef nonnull align 4 dereferenceable(4) %8)
          to label %47 unwind label %55

47:                                               ; preds = %36
  %48 = getelementptr inbounds { ptr, i8 }, ptr %9, i32 0, i32 0
  %49 = extractvalue { ptr, i8 } %46, 0
  store ptr %49, ptr %48, align 8
  %50 = getelementptr inbounds { ptr, i8 }, ptr %9, i32 0, i32 1
  %51 = extractvalue { ptr, i8 } %46, 1
  store i8 %51, ptr %50, align 8
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  br label %52

52:                                               ; preds = %47
  %53 = load i32, ptr %7, align 4, !tbaa !5
  %54 = add nsw i32 %53, 1
  store i32 %54, ptr %7, align 4, !tbaa !5
  br label %27, !llvm.loop !9

55:                                               ; preds = %36
  %56 = landingpad { ptr, i32 }
          cleanup
  %57 = extractvalue { ptr, i32 } %56, 0
  store ptr %57, ptr %3, align 8
  %58 = extractvalue { ptr, i32 } %56, 1
  store i32 %58, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  br label %63

59:                                               ; preds = %31
  br label %60

60:                                               ; preds = %59
  %61 = load i32, ptr %5, align 4, !tbaa !5
  %62 = add nsw i32 %61, 1
  store i32 %62, ptr %5, align 4, !tbaa !5
  br label %12, !llvm.loop !11

63:                                               ; preds = %55, %32
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  br label %69

64:                                               ; preds = %16
  %65 = call noundef i64 @_ZNKSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(56) %2) #5
  %66 = trunc i64 %65 to i32
  %67 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %66)
          to label %68 unwind label %17

68:                                               ; preds = %64
  call void @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(56) %2) #5
  call void @llvm.lifetime.end.p0(i64 56, ptr %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #5
  ret void

69:                                               ; preds = %63, %17
  call void @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(56) %2) #5
  call void @llvm.lifetime.end.p0(i64 56, ptr %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #5
  br label %70

70:                                               ; preds = %69
  %71 = load ptr, ptr %3, align 8
  %72 = load i32, ptr %4, align 4
  %73 = insertvalue { ptr, i32 } poison, ptr %71, 0
  %74 = insertvalue { ptr, i32 } %73, i32 %72, 1
  resume { ptr, i32 } %74
}

; 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 @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #2 align 2

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

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i8 } @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE6insertEOi(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef nonnull align 4 dereferenceable(4)) #0 align 2

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

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(56)) #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #4 align 2

attributes #0 = { 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 #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 = { 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 #5 = { 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"}
!11 = distinct !{!11, !10}


; 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::unordered_set" = type { %"class.std::_Hashtable" }
%"class.std::_Hashtable" = type { ptr, i64, %"struct.std::__detail::_Hash_node_base", i64, %"struct.std::__detail::_Prime_rehash_policy", ptr }
%"struct.std::__detail::_Hash_node_base" = type { ptr }
%"struct.std::__detail::_Prime_rehash_policy" = type { float, i64 }

@_ZZ5solvevE1a = external hidden global [100001 x i32], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5solvev() local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca %"class.std::unordered_set", align 8
  %3 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #5
  call void @llvm.lifetime.start.p0(i64 56, ptr nonnull %2) #5
  call void @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56) %2) #5
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %5 = load i32, ptr %1, align 4, !tbaa !5
  %6 = icmp sgt i32 %5, 0
  br i1 %6, label %.lr.ph13, label %._crit_edge14

._crit_edge14:                                    ; preds = %._crit_edge, %0
  %7 = call noundef i64 @_ZNKSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(56) %2) #5
  %8 = trunc i64 %7 to i32
  %9 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %8)
  call void @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(56) %2) #5
  call void @llvm.lifetime.end.p0(i64 56, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #5
  ret void

.lr.ph13:                                         ; preds = %0, %._crit_edge
  %indvars.iv16 = phi i64 [ %indvars.iv.next17, %._crit_edge ], [ 0, %0 ]
  %10 = getelementptr inbounds i32, ptr @_ZZ5solvevE1a, i64 %indvars.iv16
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %10)
  %.not = icmp eq i64 %indvars.iv16, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %20, %.lr.ph13
  %indvars.iv.next17 = add nuw nsw i64 %indvars.iv16, 1
  %12 = load i32, ptr %1, align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  %14 = icmp slt i64 %indvars.iv.next17, %13
  br i1 %14, label %.lr.ph13, label %._crit_edge14, !llvm.loop !9

.lr.ph:                                           ; preds = %.lr.ph13, %20
  %indvars.iv = phi i64 [ %indvars.iv.next, %20 ], [ 0, %.lr.ph13 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #5
  %15 = load i32, ptr %10, align 4, !tbaa !5
  %16 = getelementptr inbounds [100001 x i32], ptr @_ZZ5solvevE1a, i64 0, i64 %indvars.iv
  %17 = load i32, ptr %16, align 4, !tbaa !5
  %18 = sub nsw i32 %15, %17
  store i32 %18, ptr %3, align 4, !tbaa !5
  %19 = invoke { ptr, i8 } @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE6insertEOi(ptr noundef nonnull align 8 dereferenceable(56) %2, ptr noundef nonnull align 4 dereferenceable(4) %3)
          to label %20 unwind label %21

20:                                               ; preds = %.lr.ph
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %indvars.iv16
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !11

21:                                               ; preds = %.lr.ph
  %22 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #5
  call void @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(56) %2) #5
  call void @llvm.lifetime.end.p0(i64 56, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #5
  resume { ptr, i32 } %22
}

; 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 @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56)) 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 { ptr, i8 } @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE6insertEOi(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0 align 2

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

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(56)) local_unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #4 align 2

attributes #0 = { 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 #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 = { 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 #5 = { 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"}
!11 = distinct !{!11, !10}


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