; LLVM IR from DionysiosB/CodeForces :: 1956B-NeneAndTheCardGame (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::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 }

@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 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 i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca %"class.std::unordered_set", align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca %"struct.std::pair", align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #6
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %12

12:                                               ; preds = %50, %0
  %13 = load i64, ptr %2, align 8, !tbaa !5
  %14 = add nsw i64 %13, -1
  store i64 %14, ptr %2, align 8, !tbaa !5
  %15 = icmp ne i64 %13, 0
  br i1 %15, label %16, label %56

16:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #6
  %17 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  call void @llvm.lifetime.start.p0(i64 56, ptr %4) #6
  call void @_ZNSt13unordered_setIlSt4hashIlESt8equal_toIlESaIlEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56) %4) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #6
  store i64 0, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #6
  store i64 0, ptr %6, align 8, !tbaa !5
  br label %18

18:                                               ; preds = %44, %16
  %19 = load i64, ptr %6, align 8, !tbaa !5
  %20 = load i64, ptr %3, align 8, !tbaa !5
  %21 = icmp slt i64 %19, %20
  br i1 %21, label %23, label %22

22:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #6
  br label %47

23:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #6
  %24 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %7)
          to label %25 unwind label %32

25:                                               ; preds = %23
  %26 = invoke noundef i64 @_ZNKSt13unordered_setIlSt4hashIlESt8equal_toIlESaIlEE5countERKl(ptr noundef nonnull align 8 dereferenceable(56) %4, ptr noundef nonnull align 8 dereferenceable(8) %7)
          to label %27 unwind label %32

27:                                               ; preds = %25
  %28 = icmp ne i64 %26, 0
  br i1 %28, label %29, label %36

29:                                               ; preds = %27
  %30 = load i64, ptr %5, align 8, !tbaa !5
  %31 = add nsw i64 %30, 1
  store i64 %31, ptr %5, align 8, !tbaa !5
  br label %43

32:                                               ; preds = %36, %25, %23
  %33 = landingpad { ptr, i32 }
          cleanup
  %34 = extractvalue { ptr, i32 } %33, 0
  store ptr %34, ptr %8, align 8
  %35 = extractvalue { ptr, i32 } %33, 1
  store i32 %35, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #6
  br label %55

36:                                               ; preds = %27
  %37 = invoke { ptr, i8 } @_ZNSt13unordered_setIlSt4hashIlESt8equal_toIlESaIlEE6insertERKl(ptr noundef nonnull align 8 dereferenceable(56) %4, ptr noundef nonnull align 8 dereferenceable(8) %7)
          to label %38 unwind label %32

38:                                               ; preds = %36
  %39 = getelementptr inbounds { ptr, i8 }, ptr %10, i32 0, i32 0
  %40 = extractvalue { ptr, i8 } %37, 0
  store ptr %40, ptr %39, align 8
  %41 = getelementptr inbounds { ptr, i8 }, ptr %10, i32 0, i32 1
  %42 = extractvalue { ptr, i8 } %37, 1
  store i8 %42, ptr %41, align 8
  br label %43

43:                                               ; preds = %38, %29
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  br label %44

44:                                               ; preds = %43
  %45 = load i64, ptr %6, align 8, !tbaa !5
  %46 = add nsw i64 %45, 1
  store i64 %46, ptr %6, align 8, !tbaa !5
  br label %18, !llvm.loop !9

47:                                               ; preds = %22
  %48 = load i64, ptr %5, align 8, !tbaa !5
  %49 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef %48)
          to label %50 unwind label %51

50:                                               ; preds = %47
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  call void @_ZNSt13unordered_setIlSt4hashIlESt8equal_toIlESaIlEED2Ev(ptr noundef nonnull align 8 dereferenceable(56) %4) #6
  call void @llvm.lifetime.end.p0(i64 56, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #6
  br label %12, !llvm.loop !11

51:                                               ; preds = %47
  %52 = landingpad { ptr, i32 }
          cleanup
  %53 = extractvalue { ptr, i32 } %52, 0
  store ptr %53, ptr %8, align 8
  %54 = extractvalue { ptr, i32 } %52, 1
  store i32 %54, ptr %9, align 4
  br label %55

55:                                               ; preds = %51, %32
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  call void @_ZNSt13unordered_setIlSt4hashIlESt8equal_toIlESaIlEED2Ev(ptr noundef nonnull align 8 dereferenceable(56) %4) #6
  call void @llvm.lifetime.end.p0(i64 56, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  br label %58

56:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  %57 = load i32, ptr %1, align 4
  ret i32 %57

58:                                               ; preds = %55
  %59 = load ptr, ptr %8, align 8
  %60 = load i32, ptr %9, align 4
  %61 = insertvalue { ptr, i32 } poison, ptr %59, 0
  %62 = insertvalue { ptr, i32 } %61, i32 %60, 1
  resume { ptr, i32 } %62
}

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

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt13unordered_setIlSt4hashIlESt8equal_toIlESaIlEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #3 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_ZNKSt13unordered_setIlSt4hashIlESt8equal_toIlESaIlEE5countERKl(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef nonnull align 8 dereferenceable(8)) #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i8 } @_ZNSt13unordered_setIlSt4hashIlESt8equal_toIlESaIlEE6insertERKl(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef nonnull align 8 dereferenceable(8)) #4 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, ...) #2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt13unordered_setIlSt4hashIlESt8equal_toIlESaIlEED2Ev(ptr noundef nonnull align 8 dereferenceable(56)) 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 = { "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 = { 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 #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 = !{!"long", !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 }

@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = 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 personality ptr @__gxx_personality_v0 {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  %3 = alloca %"class.std::unordered_set", align 8
  %4 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #6
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %6 = load i64, ptr %1, align 8, !tbaa !5
  %7 = add nsw i64 %6, -1
  store i64 %7, ptr %1, align 8, !tbaa !5
  %.not11 = icmp eq i64 %6, 0
  br i1 %.not11, label %._crit_edge14, label %.lr.ph13

.lr.ph13:                                         ; preds = %0, %._crit_edge
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #6
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  call void @llvm.lifetime.start.p0(i64 56, ptr nonnull %3) #6
  call void @_ZNSt13unordered_setIlSt4hashIlESt8equal_toIlESaIlEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56) %3) #6
  %9 = load i64, ptr %2, align 8, !tbaa !5
  %10 = icmp sgt i64 %9, 0
  br i1 %10, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %23, %.lr.ph13
  %.0.lcssa = phi i64 [ 0, %.lr.ph13 ], [ %.1, %23 ]
  %11 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef %.0.lcssa)
  call void @_ZNSt13unordered_setIlSt4hashIlESt8equal_toIlESaIlEED2Ev(ptr noundef nonnull align 8 dereferenceable(56) %3) #6
  call void @llvm.lifetime.end.p0(i64 56, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #6
  %12 = load i64, ptr %1, align 8, !tbaa !5
  %13 = add nsw i64 %12, -1
  store i64 %13, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %12, 0
  br i1 %.not, label %._crit_edge14, label %.lr.ph13, !llvm.loop !9

.lr.ph:                                           ; preds = %.lr.ph13, %23
  %.010 = phi i64 [ %.1, %23 ], [ 0, %.lr.ph13 ]
  %.069 = phi i64 [ %24, %23 ], [ 0, %.lr.ph13 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #6
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %4)
  %15 = invoke noundef i64 @_ZNKSt13unordered_setIlSt4hashIlESt8equal_toIlESaIlEE5countERKl(ptr noundef nonnull align 8 dereferenceable(56) %3, ptr noundef nonnull align 8 dereferenceable(8) %4)
          to label %16 unwind label %19

16:                                               ; preds = %.lr.ph
  %.not7 = icmp eq i64 %15, 0
  br i1 %.not7, label %21, label %17

17:                                               ; preds = %16
  %18 = add nsw i64 %.010, 1
  br label %23

19:                                               ; preds = %21, %.lr.ph
  %20 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #6
  call void @_ZNSt13unordered_setIlSt4hashIlESt8equal_toIlESaIlEED2Ev(ptr noundef nonnull align 8 dereferenceable(56) %3) #6
  call void @llvm.lifetime.end.p0(i64 56, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #6
  resume { ptr, i32 } %20

21:                                               ; preds = %16
  %22 = invoke { ptr, i8 } @_ZNSt13unordered_setIlSt4hashIlESt8equal_toIlESaIlEE6insertERKl(ptr noundef nonnull align 8 dereferenceable(56) %3, ptr noundef nonnull align 8 dereferenceable(8) %4)
          to label %23 unwind label %19

23:                                               ; preds = %21, %17
  %.1 = phi i64 [ %18, %17 ], [ %.010, %21 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #6
  %24 = add nuw nsw i64 %.069, 1
  %25 = load i64, ptr %2, align 8, !tbaa !5
  %26 = icmp slt i64 %24, %25
  br i1 %26, label %.lr.ph, label %._crit_edge, !llvm.loop !11

._crit_edge14:                                    ; preds = %._crit_edge, %0
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #6
  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

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt13unordered_setIlSt4hashIlESt8equal_toIlESaIlEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #3 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_ZNKSt13unordered_setIlSt4hashIlESt8equal_toIlESaIlEE5countERKl(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i8 } @_ZNSt13unordered_setIlSt4hashIlESt8equal_toIlESaIlEE6insertERKl(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #4 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 #2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt13unordered_setIlSt4hashIlESt8equal_toIlESaIlEED2Ev(ptr noundef nonnull align 8 dereferenceable(56)) 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 = { 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 #3 = { 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 #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 = !{!"long", !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,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass