; LLVM IR from xirc/cp-algorithm :: atcoder/abc146/D (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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::vector<std::array<int, 2>>, std::allocator<std::vector<std::array<int, 2>>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<std::array<int, 2>>, std::allocator<std::vector<std::array<int, 2>>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<std::array<int, 2>>, std::allocator<std::vector<std::array<int, 2>>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<std::array<int, 2>>, std::allocator<std::vector<std::array<int, 2>>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::set" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<int, int, std::_Identity<int>, std::less<int>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<int, int, std::_Identity<int>, std::less<int>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }
%"class.std::vector.3" = type { %"struct.std::_Vector_base.4" }
%"struct.std::_Vector_base.4" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_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" }
%"class.std::vector.8" = type { %"struct.std::_Vector_base.9" }
%"struct.std::_Vector_base.9" = type { %"struct.std::_Vector_base<std::array<int, 2>, std::allocator<std::array<int, 2>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::array<int, 2>, std::allocator<std::array<int, 2>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::array<int, 2>, std::allocator<std::array<int, 2>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::array<int, 2>, std::allocator<std::array<int, 2>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::array" = type { [2 x i32] }

@N = external dso_local global i32, align 4
@edges = external dso_local global %"class.std::vector", align 8
@colors = external dso_local global %"class.std::set", align 8
@nodeToColor = external dso_local global %"class.std::vector.3", align 8
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_ISt5arrayIiLm2EESaIS1_EESaIS3_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5solvev() #2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #3 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca %"class.std::vector.8", 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 %"struct.std::array", align 4
  %9 = alloca %"struct.std::array", align 4
  %10 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %11 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %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 = load ptr, ptr @_ZSt4cout, align 8, !tbaa !5
  %18 = getelementptr i8, ptr %17, i64 -24
  %19 = load i64, ptr %18, align 8
  %20 = getelementptr inbounds i8, ptr @_ZSt4cout, i64 %19
  %21 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %20, ptr noundef null)
  %22 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @N)
  %23 = load i32, ptr @N, align 4, !tbaa !8
  %24 = sext i32 %23 to i64
  call void @llvm.lifetime.start.p0(i64 24, ptr %2) #7
  call void @llvm.memset.p0.i64(ptr align 8 %2, i8 0, i64 24, i1 false)
  call void @_ZNSt6vectorISt5arrayIiLm2EESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #7
  invoke void @_ZNSt6vectorIS_ISt5arrayIiLm2EESaIS1_EESaIS3_EE6assignEmRKS3_(ptr noundef nonnull align 8 dereferenceable(24) @edges, i64 noundef %24, ptr noundef nonnull align 8 dereferenceable(24) %2)
          to label %25 unwind label %32

25:                                               ; preds = %0
  call void @_ZNSt6vectorISt5arrayIiLm2EESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr %2) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #7
  store i32 0, ptr %5, align 4, !tbaa !8
  br label %26

26:                                               ; preds = %57, %25
  %27 = load i32, ptr %5, align 4, !tbaa !8
  %28 = load i32, ptr @N, align 4, !tbaa !8
  %29 = sub nsw i32 %28, 1
  %30 = icmp slt i32 %27, %29
  br i1 %30, label %36, label %31

31:                                               ; preds = %26
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #7
  br label %60

32:                                               ; preds = %0
  %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
  call void @_ZNSt6vectorISt5arrayIiLm2EESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr %2) #7
  br label %81

36:                                               ; preds = %26
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #7
  %37 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %6)
  %38 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %37, ptr noundef nonnull align 4 dereferenceable(4) %7)
  %39 = load i32, ptr %6, align 4, !tbaa !8
  %40 = add nsw i32 %39, -1
  store i32 %40, ptr %6, align 4, !tbaa !8
  %41 = load i32, ptr %7, align 4, !tbaa !8
  %42 = add nsw i32 %41, -1
  store i32 %42, ptr %7, align 4, !tbaa !8
  %43 = load i32, ptr %6, align 4, !tbaa !8
  %44 = sext i32 %43 to i64
  %45 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_ISt5arrayIiLm2EESaIS1_EESaIS3_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @edges, i64 noundef %44) #7
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #7
  %46 = getelementptr inbounds %"struct.std::array", ptr %8, i32 0, i32 0
  %47 = load i32, ptr %7, align 4, !tbaa !8
  store i32 %47, ptr %46, align 4, !tbaa !8
  %48 = getelementptr inbounds i32, ptr %46, i64 1
  %49 = load i32, ptr %5, align 4, !tbaa !8
  store i32 %49, ptr %48, align 4, !tbaa !8
  call void @_ZNSt6vectorISt5arrayIiLm2EESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %45, ptr noundef nonnull align 4 dereferenceable(8) %8)
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #7
  %50 = load i32, ptr %7, align 4, !tbaa !8
  %51 = sext i32 %50 to i64
  %52 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_ISt5arrayIiLm2EESaIS1_EESaIS3_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @edges, i64 noundef %51) #7
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #7
  %53 = getelementptr inbounds %"struct.std::array", ptr %9, i32 0, i32 0
  %54 = load i32, ptr %6, align 4, !tbaa !8
  store i32 %54, ptr %53, align 4, !tbaa !8
  %55 = getelementptr inbounds i32, ptr %53, i64 1
  %56 = load i32, ptr %5, align 4, !tbaa !8
  store i32 %56, ptr %55, align 4, !tbaa !8
  call void @_ZNSt6vectorISt5arrayIiLm2EESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %52, ptr noundef nonnull align 4 dereferenceable(8) %9)
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #7
  br label %57

57:                                               ; preds = %36
  %58 = load i32, ptr %5, align 4, !tbaa !8
  %59 = add nsw i32 %58, 1
  store i32 %59, ptr %5, align 4, !tbaa !8
  br label %26, !llvm.loop !11

60:                                               ; preds = %31
  call void @_Z5solvev()
  %61 = call noundef i64 @_ZNKSt3setIiSt4lessIiESaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48) @colors) #7
  %62 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEm(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %61)
  %63 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %62, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #7
  store i32 0, ptr %10, align 4, !tbaa !8
  br label %64

64:                                               ; preds = %77, %60
  %65 = load i32, ptr %10, align 4, !tbaa !8
  %66 = load i32, ptr @N, align 4, !tbaa !8
  %67 = sub nsw i32 %66, 1
  %68 = icmp slt i32 %65, %67
  br i1 %68, label %70, label %69

69:                                               ; preds = %64
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #7
  br label %80

70:                                               ; preds = %64
  %71 = load i32, ptr %10, align 4, !tbaa !8
  %72 = sext i32 %71 to i64
  %73 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @nodeToColor, i64 noundef %72) #7
  %74 = load i32, ptr %73, align 4, !tbaa !8
  %75 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %74)
  %76 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %75, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  br label %77

77:                                               ; preds = %70
  %78 = load i32, ptr %10, align 4, !tbaa !8
  %79 = add nsw i32 %78, 1
  store i32 %79, ptr %10, align 4, !tbaa !8
  br label %64, !llvm.loop !13

80:                                               ; preds = %69
  ret i32 0

81:                                               ; preds = %32
  %82 = load ptr, ptr %3, align 8
  %83 = load i32, ptr %4, align 4
  %84 = insertvalue { ptr, i32 } poison, ptr %82, 0
  %85 = insertvalue { ptr, i32 } %84, i32 %83, 1
  resume { ptr, i32 } %85
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) #4

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) #1 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #4

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_ISt5arrayIiLm2EESaIS1_EESaIS3_EE6assignEmRKS3_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt5arrayIiLm2EESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt5arrayIiLm2EESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt5arrayIiLm2EESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(8)) #2 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt3setIiSt4lessIiESaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48)) #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) #2 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)) #6

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #4

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #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 = { "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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !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<std::vector<std::array<int, 2>>, std::allocator<std::vector<std::array<int, 2>>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<std::array<int, 2>>, std::allocator<std::vector<std::array<int, 2>>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<std::array<int, 2>>, std::allocator<std::vector<std::array<int, 2>>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<std::array<int, 2>>, std::allocator<std::vector<std::array<int, 2>>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::set" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<int, int, std::_Identity<int>, std::less<int>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<int, int, std::_Identity<int>, std::less<int>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }
%"class.std::vector.3" = type { %"struct.std::_Vector_base.4" }
%"struct.std::_Vector_base.4" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_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" }
%"class.std::vector.8" = type { %"struct.std::_Vector_base.9" }
%"struct.std::_Vector_base.9" = type { %"struct.std::_Vector_base<std::array<int, 2>, std::allocator<std::array<int, 2>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::array<int, 2>, std::allocator<std::array<int, 2>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::array<int, 2>, std::allocator<std::array<int, 2>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::array<int, 2>, std::allocator<std::array<int, 2>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::array" = type { [2 x i32] }

@N = external dso_local global i32, align 4
@edges = external dso_local global %"class.std::vector", align 8
@colors = external dso_local global %"class.std::set", align 8
@nodeToColor = external dso_local global %"class.std::vector.3", align 8
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_ISt5arrayIiLm2EESaIS1_EESaIS3_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5solvev() local_unnamed_addr #2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 personality ptr @__gxx_personality_v0 {
  %1 = alloca %"class.std::vector.8", align 8
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca %"struct.std::array", align 4
  %5 = alloca %"struct.std::array", align 4
  %6 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %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 = load ptr, ptr @_ZSt4cout, align 8, !tbaa !5
  %13 = getelementptr i8, ptr %12, i64 -24
  %14 = load i64, ptr %13, align 8
  %15 = getelementptr inbounds i8, ptr @_ZSt4cout, i64 %14
  %16 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %15, ptr noundef null)
  %17 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @N)
  %18 = load i32, ptr @N, align 4, !tbaa !8
  %19 = sext i32 %18 to i64
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %1) #7
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %1, i8 0, i64 24, i1 false)
  call void @_ZNSt6vectorISt5arrayIiLm2EESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %1) #7
  invoke void @_ZNSt6vectorIS_ISt5arrayIiLm2EESaIS1_EESaIS3_EE6assignEmRKS3_(ptr noundef nonnull align 8 dereferenceable(24) @edges, i64 noundef %19, ptr noundef nonnull align 8 dereferenceable(24) %1)
          to label %20 unwind label %30

20:                                               ; preds = %0
  call void @_ZNSt6vectorISt5arrayIiLm2EESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %1) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %1) #7
  %21 = load i32, ptr @N, align 4, !tbaa !8
  %22 = icmp sgt i32 %21, 1
  br i1 %22, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %20
  %23 = getelementptr inbounds i8, ptr %4, i64 4
  %24 = getelementptr inbounds i8, ptr %5, i64 4
  br label %32

._crit_edge:                                      ; preds = %32, %20
  call void @_Z5solvev()
  %25 = call noundef i64 @_ZNKSt3setIiSt4lessIiESaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48) @colors) #7
  %26 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEm(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %25)
  %27 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %26, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  %28 = load i32, ptr @N, align 4, !tbaa !8
  %29 = icmp sgt i32 %28, 1
  br i1 %29, label %.lr.ph12, label %._crit_edge13

30:                                               ; preds = %0
  %31 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt6vectorISt5arrayIiLm2EESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %1) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %1) #7
  resume { ptr, i32 } %31

32:                                               ; preds = %.lr.ph, %32
  %.089 = phi i32 [ 0, %.lr.ph ], [ %46, %32 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #7
  %33 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %34 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %33, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %35 = load i32, ptr %2, align 4, !tbaa !8
  %36 = add nsw i32 %35, -1
  store i32 %36, ptr %2, align 4, !tbaa !8
  %37 = load i32, ptr %3, align 4, !tbaa !8
  %38 = add nsw i32 %37, -1
  store i32 %38, ptr %3, align 4, !tbaa !8
  %39 = sext i32 %36 to i64
  %40 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_ISt5arrayIiLm2EESaIS1_EESaIS3_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @edges, i64 noundef %39) #7
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #7
  %41 = load i32, ptr %3, align 4, !tbaa !8
  store i32 %41, ptr %4, align 4, !tbaa !8
  store i32 %.089, ptr %23, align 4, !tbaa !8
  call void @_ZNSt6vectorISt5arrayIiLm2EESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %40, ptr noundef nonnull align 4 dereferenceable(8) %4)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #7
  %42 = load i32, ptr %3, align 4, !tbaa !8
  %43 = sext i32 %42 to i64
  %44 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_ISt5arrayIiLm2EESaIS1_EESaIS3_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @edges, i64 noundef %43) #7
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #7
  %45 = load i32, ptr %2, align 4, !tbaa !8
  store i32 %45, ptr %5, align 4, !tbaa !8
  store i32 %.089, ptr %24, align 4, !tbaa !8
  call void @_ZNSt6vectorISt5arrayIiLm2EESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %44, ptr noundef nonnull align 4 dereferenceable(8) %5)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  %46 = add nuw nsw i32 %.089, 1
  %47 = load i32, ptr @N, align 4, !tbaa !8
  %48 = add nsw i32 %47, -1
  %49 = icmp slt i32 %46, %48
  br i1 %49, label %32, label %._crit_edge, !llvm.loop !11

._crit_edge13:                                    ; preds = %.lr.ph12, %._crit_edge
  ret i32 0

.lr.ph12:                                         ; preds = %._crit_edge, %.lr.ph12
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph12 ], [ 0, %._crit_edge ]
  %50 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @nodeToColor, i64 noundef %indvars.iv) #7
  %51 = load i32, ptr %50, align 4, !tbaa !8
  %52 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %51)
  %53 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %52, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %54 = load i32, ptr @N, align 4, !tbaa !8
  %55 = add nsw i32 %54, -1
  %56 = sext i32 %55 to i64
  %57 = icmp slt i64 %indvars.iv.next, %56
  br i1 %57, label %.lr.ph12, label %._crit_edge13, !llvm.loop !13
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) local_unnamed_addr #1 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #4

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_ISt5arrayIiLm2EESaIS1_EESaIS3_EE6assignEmRKS3_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt5arrayIiLm2EESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt5arrayIiLm2EESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt5arrayIiLm2EESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #2 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt3setIiSt4lessIiESaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48)) 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 #2 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)) #6

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #4

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #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 = { "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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
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 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


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