; LLVM IR from DionysiosB/CodeForces :: 0100-0199/177C1-Party.ll (Z3dfslRKSt6vectorIS_IlSaIlEESaIS1_EERS_IbSaIbEERS1_)

; 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"

%"struct.std::_Bit_reference" = type { ptr, i64 }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z3dfslRKSt6vectorIS_IlSaIlEESaIS1_EERS_IbSaIbEERS1_(i64 noundef %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(40) %2, ptr noundef nonnull align 8 dereferenceable(24) %3) #0 {
  %5 = alloca i64, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca %"struct.std::_Bit_reference", align 8
  %10 = alloca %"struct.std::_Bit_reference", align 8
  %11 = alloca i64, align 8
  %12 = alloca i32, align 4
  %13 = alloca i64, align 8
  %14 = alloca %"struct.std::_Bit_reference", align 8
  store i64 %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !9
  store ptr %3, ptr %8, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 16, ptr %9) #3
  %15 = load ptr, ptr %7, align 8, !tbaa !9
  %16 = load i64, ptr %5, align 8, !tbaa !5
  %17 = call { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40) %15, i64 noundef %16)
  %18 = getelementptr inbounds { ptr, i64 }, ptr %9, i32 0, i32 0
  %19 = extractvalue { ptr, i64 } %17, 0
  store ptr %19, ptr %18, align 8
  %20 = getelementptr inbounds { ptr, i64 }, ptr %9, i32 0, i32 1
  %21 = extractvalue { ptr, i64 } %17, 1
  store i64 %21, ptr %20, align 8
  %22 = call noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16) %9) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr %9) #3
  br i1 %22, label %23, label %24

23:                                               ; preds = %4
  br label %70

24:                                               ; preds = %4
  call void @llvm.lifetime.start.p0(i64 16, ptr %10) #3
  %25 = load ptr, ptr %7, align 8, !tbaa !9
  %26 = load i64, ptr %5, align 8, !tbaa !5
  %27 = call { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40) %25, i64 noundef %26)
  %28 = getelementptr inbounds { ptr, i64 }, ptr %10, i32 0, i32 0
  %29 = extractvalue { ptr, i64 } %27, 0
  store ptr %29, ptr %28, align 8
  %30 = getelementptr inbounds { ptr, i64 }, ptr %10, i32 0, i32 1
  %31 = extractvalue { ptr, i64 } %27, 1
  store i64 %31, ptr %30, align 8
  %32 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt14_Bit_referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16) %10, i1 noundef zeroext true) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr %10) #3
  %33 = load ptr, ptr %8, align 8, !tbaa !9
  call void @_ZNSt6vectorIlSaIlEE9push_backERKl(ptr noundef nonnull align 8 dereferenceable(24) %33, ptr noundef nonnull align 8 dereferenceable(8) %5)
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #3
  store i64 0, ptr %11, align 8, !tbaa !5
  br label %34

34:                                               ; preds = %66, %24
  %35 = load i64, ptr %11, align 8, !tbaa !5
  %36 = load ptr, ptr %6, align 8, !tbaa !9
  %37 = load i64, ptr %5, align 8, !tbaa !5
  %38 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNKSt6vectorIS_IlSaIlEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %36, i64 noundef %37) #3
  %39 = call noundef i64 @_ZNKSt6vectorIlSaIlEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %38) #3
  %40 = icmp ult i64 %35, %39
  br i1 %40, label %42, label %41

41:                                               ; preds = %34
  store i32 2, ptr %12, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #3
  br label %69

42:                                               ; preds = %34
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #3
  %43 = load ptr, ptr %6, align 8, !tbaa !9
  %44 = load i64, ptr %5, align 8, !tbaa !5
  %45 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNKSt6vectorIS_IlSaIlEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %43, i64 noundef %44) #3
  %46 = load i64, ptr %11, align 8, !tbaa !5
  %47 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %45, i64 noundef %46) #3
  %48 = load i64, ptr %47, align 8, !tbaa !5
  store i64 %48, ptr %13, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 16, ptr %14) #3
  %49 = load ptr, ptr %7, align 8, !tbaa !9
  %50 = load i64, ptr %13, align 8, !tbaa !5
  %51 = call { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40) %49, i64 noundef %50)
  %52 = getelementptr inbounds { ptr, i64 }, ptr %14, i32 0, i32 0
  %53 = extractvalue { ptr, i64 } %51, 0
  store ptr %53, ptr %52, align 8
  %54 = getelementptr inbounds { ptr, i64 }, ptr %14, i32 0, i32 1
  %55 = extractvalue { ptr, i64 } %51, 1
  store i64 %55, ptr %54, align 8
  %56 = call noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16) %14) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr %14) #3
  br i1 %56, label %57, label %58

57:                                               ; preds = %42
  store i32 4, ptr %12, align 4
  br label %63

58:                                               ; preds = %42
  %59 = load i64, ptr %13, align 8, !tbaa !5
  %60 = load ptr, ptr %6, align 8, !tbaa !9
  %61 = load ptr, ptr %7, align 8, !tbaa !9
  %62 = load ptr, ptr %8, align 8, !tbaa !9
  call void @_Z3dfslRKSt6vectorIS_IlSaIlEESaIS1_EERS_IbSaIbEERS1_(i64 noundef %59, ptr noundef nonnull align 8 dereferenceable(24) %60, ptr noundef nonnull align 8 dereferenceable(40) %61, ptr noundef nonnull align 8 dereferenceable(24) %62)
  store i32 0, ptr %12, align 4
  br label %63

63:                                               ; preds = %58, %57
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #3
  %64 = load i32, ptr %12, align 4
  switch i32 %64, label %71 [
    i32 0, label %65
    i32 4, label %66
  ]

65:                                               ; preds = %63
  br label %66

66:                                               ; preds = %65, %63
  %67 = load i64, ptr %11, align 8, !tbaa !5
  %68 = add nsw i64 %67, 1
  store i64 %68, ptr %11, align 8, !tbaa !5
  br label %34, !llvm.loop !11

69:                                               ; preds = %41
  br label %70

70:                                               ; preds = %69, %23
  ret void

71:                                               ; preds = %63
  unreachable
}

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

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40), i64 noundef) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16)) #2 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt14_Bit_referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16), i1 noundef zeroext) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIlSaIlEE9push_backERKl(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(8)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNKSt6vectorIS_IlSaIlEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIlSaIlEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 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 = { 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 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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"

%"struct.std::_Bit_reference" = type { ptr, i64 }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z3dfslRKSt6vectorIS_IlSaIlEESaIS1_EERS_IbSaIbEERS1_(i64 noundef %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(40) %2, ptr noundef nonnull align 8 dereferenceable(24) %3) local_unnamed_addr #0 {
  %5 = alloca i64, align 8
  %6 = alloca %"struct.std::_Bit_reference", align 8
  %7 = alloca %"struct.std::_Bit_reference", align 8
  %8 = alloca %"struct.std::_Bit_reference", align 8
  store i64 %0, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %6) #3
  %9 = tail call { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40) %2, i64 noundef %0)
  %10 = extractvalue { ptr, i64 } %9, 0
  store ptr %10, ptr %6, align 8
  %11 = getelementptr inbounds i8, ptr %6, i64 8
  %12 = extractvalue { ptr, i64 } %9, 1
  store i64 %12, ptr %11, align 8
  %13 = call noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16) %6) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %6) #3
  br i1 %13, label %.loopexit, label %14

14:                                               ; preds = %4
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %7) #3
  %15 = call { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40) %2, i64 noundef %0)
  %16 = extractvalue { ptr, i64 } %15, 0
  store ptr %16, ptr %7, align 8
  %17 = getelementptr inbounds i8, ptr %7, i64 8
  %18 = extractvalue { ptr, i64 } %15, 1
  store i64 %18, ptr %17, align 8
  %19 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt14_Bit_referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16) %7, i1 noundef zeroext true) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %7) #3
  call void @_ZNSt6vectorIlSaIlEE9push_backERKl(ptr noundef nonnull align 8 dereferenceable(24) %3, ptr noundef nonnull align 8 dereferenceable(8) %5)
  %20 = load i64, ptr %5, align 8, !tbaa !5
  %21 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNKSt6vectorIS_IlSaIlEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %20) #3
  %22 = call noundef i64 @_ZNKSt6vectorIlSaIlEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %21) #3
  %.not = icmp eq i64 %22, 0
  br i1 %.not, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %14
  %23 = getelementptr inbounds i8, ptr %8, i64 8
  br label %24

24:                                               ; preds = %.lr.ph, %34
  %.013 = phi i64 [ 0, %.lr.ph ], [ %35, %34 ]
  %25 = load i64, ptr %5, align 8, !tbaa !5
  %26 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNKSt6vectorIS_IlSaIlEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %25) #3
  %27 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %26, i64 noundef %.013) #3
  %28 = load i64, ptr %27, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %8) #3
  %29 = call { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40) %2, i64 noundef %28)
  %30 = extractvalue { ptr, i64 } %29, 0
  store ptr %30, ptr %8, align 8
  %31 = extractvalue { ptr, i64 } %29, 1
  store i64 %31, ptr %23, align 8
  %32 = call noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16) %8) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %8) #3
  br i1 %32, label %34, label %33

33:                                               ; preds = %24
  call void @_Z3dfslRKSt6vectorIS_IlSaIlEESaIS1_EERS_IbSaIbEERS1_(i64 noundef %28, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(40) %2, ptr noundef nonnull align 8 dereferenceable(24) %3)
  br label %34

34:                                               ; preds = %24, %33
  %35 = add nuw nsw i64 %.013, 1
  %36 = load i64, ptr %5, align 8, !tbaa !5
  %37 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNKSt6vectorIS_IlSaIlEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %36) #3
  %38 = call noundef i64 @_ZNKSt6vectorIlSaIlEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %37) #3
  %39 = icmp ult i64 %35, %38
  br i1 %39, label %24, label %.loopexit, !llvm.loop !9

.loopexit:                                        ; preds = %34, %14, %4
  ret void
}

; 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 uwtable
declare dso_local { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #2 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: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt14_Bit_referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16), i1 noundef zeroext) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIlSaIlEE9push_backERKl(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNKSt6vectorIS_IlSaIlEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIlSaIlEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 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 = { 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"}


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