; LLVM IR from eyangch/competitive-programming :: Codeforces/1220 (e)

; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"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
@M = external dso_local global i64, align 8
@W = external dso_local global [200000 x i64], align 16
@S = external dso_local global i64, align 8
@graph = external dso_local global [200000 x %"class.std::vector"], align 16
@de = external dso_local global [200000 x i64], align 16
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3dfsxx(i64 noundef, i64 noundef) #0

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3maxIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #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 norecurse uwtable
define dso_local noundef i32 @main() #3 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca i32, align 4
  %9 = alloca i64, align 8
  %10 = alloca i64, align 8
  %11 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  %12 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %13 = getelementptr i8, ptr %12, i64 -24
  %14 = load i64, ptr %13, align 8
  %15 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %14
  %16 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %15, ptr noundef null)
  %17 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %18 = 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)
  %19 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) %18, ptr noundef nonnull align 8 dereferenceable(8) @M)
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #7
  store i64 0, ptr %2, align 8, !tbaa !8
  br label %20

20:                                               ; preds = %29, %0
  %21 = load i64, ptr %2, align 8, !tbaa !8
  %22 = load i64, ptr @N, align 8, !tbaa !8
  %23 = icmp slt i64 %21, %22
  br i1 %23, label %25, label %24

24:                                               ; preds = %20
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #7
  br label %32

25:                                               ; preds = %20
  %26 = load i64, ptr %2, align 8, !tbaa !8
  %27 = getelementptr inbounds [200000 x i64], ptr @W, i64 0, i64 %26
  %28 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %27)
  br label %29

29:                                               ; preds = %25
  %30 = load i64, ptr %2, align 8, !tbaa !8
  %31 = add nsw i64 %30, 1
  store i64 %31, ptr %2, align 8, !tbaa !8
  br label %20, !llvm.loop !11

32:                                               ; preds = %24
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #7
  store i64 0, ptr %3, align 8, !tbaa !8
  br label %33

33:                                               ; preds = %51, %32
  %34 = load i64, ptr %3, align 8, !tbaa !8
  %35 = load i64, ptr @M, align 8, !tbaa !8
  %36 = icmp slt i64 %34, %35
  br i1 %36, label %38, label %37

37:                                               ; preds = %33
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #7
  br label %54

38:                                               ; preds = %33
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #7
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #7
  %39 = 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)
  %40 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) %39, ptr noundef nonnull align 8 dereferenceable(8) %5)
  %41 = load i64, ptr %4, align 8, !tbaa !8
  %42 = sub nsw i64 %41, 1
  %43 = getelementptr inbounds [200000 x %"class.std::vector"], ptr @graph, i64 0, i64 %42
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #7
  %44 = load i64, ptr %5, align 8, !tbaa !8
  %45 = sub nsw i64 %44, 1
  store i64 %45, ptr %6, align 8, !tbaa !8
  call void @_ZNSt6vectorIxSaIxEE9push_backEOx(ptr noundef nonnull align 8 dereferenceable(24) %43, ptr noundef nonnull align 8 dereferenceable(8) %6)
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #7
  %46 = load i64, ptr %5, align 8, !tbaa !8
  %47 = sub nsw i64 %46, 1
  %48 = getelementptr inbounds [200000 x %"class.std::vector"], ptr @graph, i64 0, i64 %47
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #7
  %49 = load i64, ptr %4, align 8, !tbaa !8
  %50 = sub nsw i64 %49, 1
  store i64 %50, ptr %7, align 8, !tbaa !8
  call void @_ZNSt6vectorIxSaIxEE9push_backEOx(ptr noundef nonnull align 8 dereferenceable(24) %48, ptr noundef nonnull align 8 dereferenceable(8) %7)
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #7
  br label %51

51:                                               ; preds = %38
  %52 = load i64, ptr %3, align 8, !tbaa !8
  %53 = add nsw i64 %52, 1
  store i64 %53, ptr %3, align 8, !tbaa !8
  br label %33, !llvm.loop !13

54:                                               ; preds = %37
  %55 = load i64, ptr @N, align 8, !tbaa !8
  %56 = getelementptr inbounds i64, ptr @de, i64 %55
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #7
  store i32 -1, ptr %8, align 4, !tbaa !14
  call void @_ZSt4fillIPxiEvT_S1_RKT0_(ptr noundef @de, ptr noundef %56, ptr noundef nonnull align 4 dereferenceable(4) %8)
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #7
  %57 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) @S)
  %58 = load i64, ptr @S, align 8, !tbaa !8
  %59 = sub nsw i64 %58, 1
  call void @_Z3dfsxx(i64 noundef %59, i64 noundef -1)
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #7
  store i64 0, ptr %9, align 8, !tbaa !8
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #7
  store i64 0, ptr %10, align 8, !tbaa !8
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #7
  store i64 0, ptr %11, align 8, !tbaa !8
  br label %60

60:                                               ; preds = %83, %54
  %61 = load i64, ptr %11, align 8, !tbaa !8
  %62 = load i64, ptr @N, align 8, !tbaa !8
  %63 = icmp slt i64 %61, %62
  br i1 %63, label %65, label %64

64:                                               ; preds = %60
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #7
  br label %86

65:                                               ; preds = %60
  %66 = load i64, ptr %11, align 8, !tbaa !8
  %67 = getelementptr inbounds [200000 x i64], ptr @de, i64 0, i64 %66
  %68 = load i64, ptr %67, align 8, !tbaa !8
  %69 = xor i64 %68, -1
  %70 = icmp ne i64 %69, 0
  br i1 %70, label %71, label %76

71:                                               ; preds = %65
  %72 = load i64, ptr %11, align 8, !tbaa !8
  %73 = getelementptr inbounds [200000 x i64], ptr @de, i64 0, i64 %72
  %74 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3maxIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8) %10, ptr noundef nonnull align 8 dereferenceable(8) %73)
  %75 = load i64, ptr %74, align 8, !tbaa !8
  store i64 %75, ptr %10, align 8, !tbaa !8
  br label %82

76:                                               ; preds = %65
  %77 = load i64, ptr %11, align 8, !tbaa !8
  %78 = getelementptr inbounds [200000 x i64], ptr @W, i64 0, i64 %77
  %79 = load i64, ptr %78, align 8, !tbaa !8
  %80 = load i64, ptr %9, align 8, !tbaa !8
  %81 = add nsw i64 %80, %79
  store i64 %81, ptr %9, align 8, !tbaa !8
  br label %82

82:                                               ; preds = %76, %71
  br label %83

83:                                               ; preds = %82
  %84 = load i64, ptr %11, align 8, !tbaa !8
  %85 = add nsw i64 %84, 1
  store i64 %85, ptr %11, align 8, !tbaa !8
  br label %60, !llvm.loop !16

86:                                               ; preds = %64
  %87 = load i64, ptr %9, align 8, !tbaa !8
  %88 = load i64, ptr %10, align 8, !tbaa !8
  %89 = add nsw i64 %87, %88
  %90 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %89)
  %91 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) %90, i8 noundef signext 10)
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #7
  %92 = load i32, ptr %1, align 4
  ret i32 %92
}

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) #4 align 2

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) #5

; 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)) #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIxSaIxEE9push_backEOx(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(8)) #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4fillIPxiEvT_S1_RKT0_(ptr noundef, ptr noundef, ptr noundef nonnull align 4 dereferenceable(4)) #6

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8), i8 noundef signext) #6

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #0 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 = { 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 #3 = { 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 #4 = { 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 = { "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 = { 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" }
attributes #7 = { 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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"long long", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = !{!15, !15, i64 0}
!15 = !{!"int", !10, i64 0}
!16 = distinct !{!16, !12}


; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"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
@M = external dso_local global i64, align 8
@W = external dso_local global [200000 x i64], align 16
@S = external dso_local global i64, align 8
@graph = external dso_local global [200000 x %"class.std::vector"], align 16
@de = external dso_local global [200000 x i64], align 16
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3dfsxx(i64 noundef, i64 noundef) local_unnamed_addr #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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3maxIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #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 norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i32, align 4
  %6 = alloca i64, align 8
  %7 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %8 = getelementptr i8, ptr %7, i64 -24
  %9 = load i64, ptr %8, align 8
  %10 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %9
  %11 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %10, ptr noundef null)
  %12 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %13 = 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)
  %14 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) %13, ptr noundef nonnull align 8 dereferenceable(8) @M)
  %15 = load i64, ptr @N, align 8, !tbaa !8
  %16 = icmp sgt i64 %15, 0
  br i1 %16, label %.lr.ph, label %.preheader

.preheader:                                       ; preds = %.lr.ph, %0
  %17 = phi i64 [ %15, %0 ], [ %23, %.lr.ph ]
  %18 = load i64, ptr @M, align 8, !tbaa !8
  %19 = icmp sgt i64 %18, 0
  br i1 %19, label %.lr.ph18, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.01516 = phi i64 [ %22, %.lr.ph ], [ 0, %0 ]
  %20 = getelementptr inbounds [200000 x i64], ptr @W, i64 0, i64 %.01516
  %21 = 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) %20)
  %22 = add nuw nsw i64 %.01516, 1
  %23 = load i64, ptr @N, align 8, !tbaa !8
  %24 = icmp slt i64 %22, %23
  br i1 %24, label %.lr.ph, label %.preheader, !llvm.loop !11

._crit_edge.loopexit:                             ; preds = %.lr.ph18
  %.pre = load i64, ptr @N, align 8, !tbaa !8
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %.preheader
  %25 = phi i64 [ %.pre, %._crit_edge.loopexit ], [ %17, %.preheader ]
  %26 = getelementptr inbounds i64, ptr @de, i64 %25
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #7
  store i32 -1, ptr %5, align 4, !tbaa !13
  call void @_ZSt4fillIPxiEvT_S1_RKT0_(ptr noundef nonnull @de, ptr noundef nonnull %26, ptr noundef nonnull align 4 dereferenceable(4) %5)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #7
  %27 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) @S)
  %28 = load i64, ptr @S, align 8, !tbaa !8
  %29 = add nsw i64 %28, -1
  call void @_Z3dfsxx(i64 noundef %29, i64 noundef -1)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #7
  store i64 0, ptr %6, align 8, !tbaa !8
  %30 = load i64, ptr @N, align 8, !tbaa !8
  %31 = icmp sgt i64 %30, 0
  br i1 %31, label %.lr.ph22, label %._crit_edge23

.lr.ph18:                                         ; preds = %.preheader, %.lr.ph18
  %.01417 = phi i64 [ %44, %.lr.ph18 ], [ 0, %.preheader ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #7
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #7
  %32 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %1)
  %33 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) %32, ptr noundef nonnull align 8 dereferenceable(8) %2)
  %34 = load i64, ptr %1, align 8, !tbaa !8
  %35 = add nsw i64 %34, -1
  %36 = getelementptr inbounds [200000 x %"class.std::vector"], ptr @graph, i64 0, i64 %35
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #7
  %37 = load i64, ptr %2, align 8, !tbaa !8
  %38 = add nsw i64 %37, -1
  store i64 %38, ptr %3, align 8, !tbaa !8
  call void @_ZNSt6vectorIxSaIxEE9push_backEOx(ptr noundef nonnull align 8 dereferenceable(24) %36, ptr noundef nonnull align 8 dereferenceable(8) %3)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #7
  %39 = load i64, ptr %2, align 8, !tbaa !8
  %40 = add nsw i64 %39, -1
  %41 = getelementptr inbounds [200000 x %"class.std::vector"], ptr @graph, i64 0, i64 %40
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #7
  %42 = load i64, ptr %1, align 8, !tbaa !8
  %43 = add nsw i64 %42, -1
  store i64 %43, ptr %4, align 8, !tbaa !8
  call void @_ZNSt6vectorIxSaIxEE9push_backEOx(ptr noundef nonnull align 8 dereferenceable(24) %41, ptr noundef nonnull align 8 dereferenceable(8) %4)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #7
  %44 = add nuw nsw i64 %.01417, 1
  %45 = load i64, ptr @M, align 8, !tbaa !8
  %46 = icmp slt i64 %44, %45
  br i1 %46, label %.lr.ph18, label %._crit_edge.loopexit, !llvm.loop !15

._crit_edge23.loopexit:                           ; preds = %62
  %47 = add nsw i64 %63, %.1
  br label %._crit_edge23

._crit_edge23:                                    ; preds = %._crit_edge23.loopexit, %._crit_edge
  %48 = phi i64 [ 0, %._crit_edge ], [ %47, %._crit_edge23.loopexit ]
  %49 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %48)
  %50 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) %49, i8 noundef signext 10)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #7
  ret i32 0

.lr.ph22:                                         ; preds = %._crit_edge, %62
  %51 = phi i64 [ %63, %62 ], [ 0, %._crit_edge ]
  %52 = phi i64 [ %64, %62 ], [ %30, %._crit_edge ]
  %.020 = phi i64 [ %65, %62 ], [ 0, %._crit_edge ]
  %.01319 = phi i64 [ %.1, %62 ], [ 0, %._crit_edge ]
  %53 = getelementptr inbounds [200000 x i64], ptr @de, i64 0, i64 %.020
  %54 = load i64, ptr %53, align 8, !tbaa !8
  %.not = icmp eq i64 %54, -1
  br i1 %.not, label %58, label %55

55:                                               ; preds = %.lr.ph22
  %56 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3maxIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8) %6, ptr noundef nonnull align 8 dereferenceable(8) %53)
  %57 = load i64, ptr %56, align 8, !tbaa !8
  store i64 %57, ptr %6, align 8, !tbaa !8
  %.pre24 = load i64, ptr @N, align 8, !tbaa !8
  br label %62

58:                                               ; preds = %.lr.ph22
  %59 = getelementptr inbounds [200000 x i64], ptr @W, i64 0, i64 %.020
  %60 = load i64, ptr %59, align 8, !tbaa !8
  %61 = add nsw i64 %60, %.01319
  br label %62

62:                                               ; preds = %55, %58
  %63 = phi i64 [ %57, %55 ], [ %51, %58 ]
  %64 = phi i64 [ %.pre24, %55 ], [ %52, %58 ]
  %.1 = phi i64 [ %.01319, %55 ], [ %61, %58 ]
  %65 = add nuw nsw i64 %.020, 1
  %66 = icmp slt i64 %65, %64
  br i1 %66, label %.lr.ph22, label %._crit_edge23.loopexit, !llvm.loop !16
}

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) local_unnamed_addr #4 align 2

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) local_unnamed_addr #5

; 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 #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIxSaIxEE9push_backEOx(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4fillIPxiEvT_S1_RKT0_(ptr noundef, ptr noundef, ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #6

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8), i8 noundef signext) local_unnamed_addr #6

; 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 #0 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 = { 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 #3 = { 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 #4 = { 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 = { "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 = { 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" }
attributes #7 = { 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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"long long", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!14, !14, i64 0}
!14 = !{!"int", !10, i64 0}
!15 = distinct !{!15, !12}
!16 = distinct !{!16, !12}


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