; LLVM IR from manishbisht/Competitive-Programming :: Codeforces/Codeforces Round #358 (Div. 2) (Alyona and Mex)

; 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" }

@n = external dso_local global i64, align 8
@i = external dso_local global i64, align 8
@a = external dso_local global [100000 x i64], align 16
@temp = external dso_local global i64, align 8
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %2 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) @n)
  store i64 0, ptr @i, align 8, !tbaa !5
  br label %3

3:                                                ; preds = %11, %0
  %4 = load i64, ptr @i, align 8, !tbaa !5
  %5 = load i64, ptr @n, align 8, !tbaa !5
  %6 = icmp slt i64 %4, %5
  br i1 %6, label %7, label %14

7:                                                ; preds = %3
  %8 = load i64, ptr @i, align 8, !tbaa !5
  %9 = getelementptr inbounds [100000 x i64], ptr @a, i64 0, i64 %8
  %10 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %9)
  br label %11

11:                                               ; preds = %7
  %12 = load i64, ptr @i, align 8, !tbaa !5
  %13 = add nsw i64 %12, 1
  store i64 %13, ptr @i, align 8, !tbaa !5
  br label %3, !llvm.loop !9

14:                                               ; preds = %3
  %15 = load i64, ptr @n, align 8, !tbaa !5
  %16 = getelementptr inbounds i64, ptr @a, i64 %15
  call void @_ZSt4sortIPxEvT_S1_(ptr noundef @a, ptr noundef %16)
  store i64 1, ptr @temp, align 8, !tbaa !5
  store i64 0, ptr @i, align 8, !tbaa !5
  br label %17

17:                                               ; preds = %31, %14
  %18 = load i64, ptr @i, align 8, !tbaa !5
  %19 = load i64, ptr @n, align 8, !tbaa !5
  %20 = icmp slt i64 %18, %19
  br i1 %20, label %21, label %34

21:                                               ; preds = %17
  %22 = load i64, ptr @i, align 8, !tbaa !5
  %23 = getelementptr inbounds [100000 x i64], ptr @a, i64 0, i64 %22
  %24 = load i64, ptr %23, align 8, !tbaa !5
  %25 = load i64, ptr @temp, align 8, !tbaa !5
  %26 = icmp sge i64 %24, %25
  br i1 %26, label %27, label %30

27:                                               ; preds = %21
  %28 = load i64, ptr @temp, align 8, !tbaa !5
  %29 = add nsw i64 %28, 1
  store i64 %29, ptr @temp, align 8, !tbaa !5
  br label %30

30:                                               ; preds = %27, %21
  br label %31

31:                                               ; preds = %30
  %32 = load i64, ptr @i, align 8, !tbaa !5
  %33 = add nsw i64 %32, 1
  store i64 %33, ptr @i, align 8, !tbaa !5
  br label %17, !llvm.loop !11

34:                                               ; preds = %17
  %35 = load i64, ptr @temp, align 8, !tbaa !5
  %36 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %35)
  %37 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %36, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  ret i32 0
}

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIPxEvT_S1_(ptr noundef, ptr noundef) #2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #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 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 #2 = { 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" }

!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 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::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" }

@n = external dso_local global i64, align 8
@i = external dso_local local_unnamed_addr global i64, align 8
@a = external dso_local global [100000 x i64], align 16
@temp = external dso_local local_unnamed_addr global i64, align 8
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) @n)
  store i64 0, ptr @i, align 8, !tbaa !5
  %2 = load i64, ptr @n, align 8, !tbaa !5
  %3 = icmp sgt i64 %2, 0
  br i1 %3, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %storemerge5 = phi i64 [ %7, %.lr.ph ], [ 0, %0 ]
  %4 = getelementptr inbounds [100000 x i64], ptr @a, i64 0, i64 %storemerge5
  %5 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %4)
  %6 = load i64, ptr @i, align 8, !tbaa !5
  %7 = add nsw i64 %6, 1
  store i64 %7, ptr @i, align 8, !tbaa !5
  %8 = load i64, ptr @n, align 8, !tbaa !5
  %9 = icmp slt i64 %7, %8
  br i1 %9, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %0
  %.lcssa = phi i64 [ %2, %0 ], [ %8, %.lr.ph ]
  %10 = getelementptr inbounds i64, ptr @a, i64 %.lcssa
  tail call void @_ZSt4sortIPxEvT_S1_(ptr noundef nonnull @a, ptr noundef nonnull %10)
  store i64 1, ptr @temp, align 8, !tbaa !5
  %11 = load i64, ptr @n, align 8, !tbaa !5
  %12 = icmp sgt i64 %11, 0
  br i1 %12, label %.lr.ph8.preheader, label %._crit_edge9

.lr.ph8.preheader:                                ; preds = %._crit_edge
  %xtraiter = and i64 %11, 1
  %13 = icmp eq i64 %11, 1
  br i1 %13, label %._crit_edge9.loopexit.unr-lcssa, label %.lr.ph8.preheader.new

.lr.ph8.preheader.new:                            ; preds = %.lr.ph8.preheader
  %unroll_iter = and i64 %11, 9223372036854775806
  br label %.lr.ph8

.lr.ph8:                                          ; preds = %25, %.lr.ph8.preheader.new
  %storemerge46 = phi i64 [ 0, %.lr.ph8.preheader.new ], [ %27, %25 ]
  %14 = phi i64 [ 1, %.lr.ph8.preheader.new ], [ %26, %25 ]
  %niter = phi i64 [ 0, %.lr.ph8.preheader.new ], [ %niter.next.1, %25 ]
  %15 = getelementptr inbounds [100000 x i64], ptr @a, i64 0, i64 %storemerge46
  %16 = load i64, ptr %15, align 16, !tbaa !5
  %.not = icmp slt i64 %16, %14
  br i1 %.not, label %.lr.ph8.1, label %17

17:                                               ; preds = %.lr.ph8
  %18 = add nsw i64 %14, 1
  store i64 %18, ptr @temp, align 8, !tbaa !5
  br label %.lr.ph8.1

.lr.ph8.1:                                        ; preds = %.lr.ph8, %17
  %19 = phi i64 [ %14, %.lr.ph8 ], [ %18, %17 ]
  %20 = or disjoint i64 %storemerge46, 1
  %21 = getelementptr inbounds [100000 x i64], ptr @a, i64 0, i64 %20
  %22 = load i64, ptr %21, align 8, !tbaa !5
  %.not.1 = icmp slt i64 %22, %19
  br i1 %.not.1, label %25, label %23

23:                                               ; preds = %.lr.ph8.1
  %24 = add nsw i64 %19, 1
  store i64 %24, ptr @temp, align 8, !tbaa !5
  br label %25

25:                                               ; preds = %23, %.lr.ph8.1
  %26 = phi i64 [ %19, %.lr.ph8.1 ], [ %24, %23 ]
  %27 = add nuw nsw i64 %storemerge46, 2
  %niter.next.1 = add i64 %niter, 2
  %niter.ncmp.1 = icmp eq i64 %niter.next.1, %unroll_iter
  br i1 %niter.ncmp.1, label %._crit_edge9.loopexit.unr-lcssa, label %.lr.ph8, !llvm.loop !11

._crit_edge9.loopexit.unr-lcssa:                  ; preds = %25, %.lr.ph8.preheader
  %.lcssa17.ph = phi i64 [ poison, %.lr.ph8.preheader ], [ %26, %25 ]
  %storemerge46.unr = phi i64 [ 0, %.lr.ph8.preheader ], [ %27, %25 ]
  %.unr = phi i64 [ 1, %.lr.ph8.preheader ], [ %26, %25 ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge9, label %.lr.ph8.epil

.lr.ph8.epil:                                     ; preds = %._crit_edge9.loopexit.unr-lcssa
  %28 = getelementptr inbounds [100000 x i64], ptr @a, i64 0, i64 %storemerge46.unr
  %29 = load i64, ptr %28, align 8, !tbaa !5
  %.not.epil = icmp slt i64 %29, %.unr
  br i1 %.not.epil, label %._crit_edge9, label %30

30:                                               ; preds = %.lr.ph8.epil
  %31 = add nsw i64 %.unr, 1
  store i64 %31, ptr @temp, align 8, !tbaa !5
  br label %._crit_edge9

._crit_edge9:                                     ; preds = %._crit_edge9.loopexit.unr-lcssa, %30, %.lr.ph8.epil, %._crit_edge
  %32 = phi i64 [ 1, %._crit_edge ], [ %.lcssa17.ph, %._crit_edge9.loopexit.unr-lcssa ], [ %.unr, %.lr.ph8.epil ], [ %31, %30 ]
  %storemerge4.lcssa = phi i64 [ 0, %._crit_edge ], [ %11, %.lr.ph8.epil ], [ %11, %30 ], [ %11, %._crit_edge9.loopexit.unr-lcssa ]
  store i64 %storemerge4.lcssa, ptr @i, align 8, !tbaa !5
  %33 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %32)
  %34 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %33, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  ret i32 0
}

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIPxEvT_S1_(ptr noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #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 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 #2 = { 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" }

!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 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,IndVarSimplifyPass,InferAlignmentPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass