; LLVM IR from VastoLorde95/Competitive-Programming :: Hackerrank/Company Contests/Zalando Codesprint 2016/Problem B (B)

; 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_ostream" = type { ptr, %"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::map" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<long long, std::pair<const long long, int>, std::_Select1st<std::pair<const long long, int>>, std::less<long long>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<long long, std::pair<const long long, int>, std::_Select1st<std::pair<const long long, int>>, std::less<long long>>::_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" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"struct.std::pair" = type { i64, i64 }
%"class.std::reverse_iterator" = type { %"struct.std::_Rb_tree_iterator" }
%"struct.std::_Rb_tree_iterator" = type { ptr }
%"struct.std::pair.3" = type <{ i64, i32, [4 x i8] }>

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@n = external dso_local global i32, align 4
@h = external dso_local global %"class.std::map", align 8
@v = external dso_local global %"class.std::vector", align 8
@_ZSt3cin = external global %"class.std::basic_istream", align 8

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  %8 = alloca %"struct.std::pair", align 8
  %9 = alloca %"class.std::reverse_iterator", align 8
  store i32 0, ptr %1, align 4
  %10 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %11 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %12 = getelementptr i8, ptr %11, i64 -24
  %13 = load i64, ptr %12, align 8
  %14 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %13
  %15 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %14, ptr noundef null)
  %16 = load ptr, ptr @_ZSt4cout, align 8, !tbaa !5
  %17 = getelementptr i8, ptr %16, i64 -24
  %18 = load i64, ptr %17, align 8
  %19 = getelementptr inbounds i8, ptr @_ZSt4cout, i64 %18
  %20 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %19, ptr noundef null)
  %21 = 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)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  store i32 0, ptr %3, align 4, !tbaa !8
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  store i32 0, ptr %4, align 4, !tbaa !8
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #6
  store i32 0, ptr %7, align 4, !tbaa !8
  br label %22

22:                                               ; preds = %97, %0
  %23 = load i32, ptr %7, align 4, !tbaa !8
  %24 = load i32, ptr @n, align 4, !tbaa !8
  %25 = icmp slt i32 %23, %24
  br i1 %25, label %27, label %26

26:                                               ; preds = %22
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #6
  br label %100

27:                                               ; preds = %22
  %28 = 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)
  %29 = load i32, ptr %2, align 4, !tbaa !8
  %30 = icmp eq i32 %29, 1
  br i1 %30, label %31, label %42

31:                                               ; preds = %27
  %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) %5)
  %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) %6)
  call void @llvm.lifetime.start.p0(i64 16, ptr %8) #6
  %34 = call { i64, i64 } @_ZSt9make_pairIRxS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 8 dereferenceable(8) %6)
  %35 = getelementptr inbounds { i64, i64 }, ptr %8, i32 0, i32 0
  %36 = extractvalue { i64, i64 } %34, 0
  store i64 %36, ptr %35, align 8
  %37 = getelementptr inbounds { i64, i64 }, ptr %8, i32 0, i32 1
  %38 = extractvalue { i64, i64 } %34, 1
  store i64 %38, ptr %37, align 8
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) @v, ptr noundef nonnull align 8 dereferenceable(16) %8)
  call void @llvm.lifetime.end.p0(i64 16, ptr %8) #6
  %39 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIxiSt4lessIxESaISt4pairIKxiEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48) @h, ptr noundef nonnull align 8 dereferenceable(8) %5)
  %40 = load i32, ptr %39, align 4, !tbaa !8
  %41 = add nsw i32 %40, 1
  store i32 %41, ptr %39, align 4, !tbaa !8
  br label %96

42:                                               ; preds = %27
  %43 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %6)
  br label %44

44:                                               ; preds = %81, %42
  %45 = load i32, ptr %3, align 4, !tbaa !8
  %46 = sext i32 %45 to i64
  %47 = call noundef i64 @_ZNKSt6vectorISt4pairIxxESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) @v) #6
  %48 = icmp ult i64 %46, %47
  br i1 %48, label %49, label %58

49:                                               ; preds = %44
  %50 = load i32, ptr %3, align 4, !tbaa !8
  %51 = sext i32 %50 to i64
  %52 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %51) #6
  %53 = getelementptr inbounds %"struct.std::pair", ptr %52, i32 0, i32 1
  %54 = load i64, ptr %53, align 8, !tbaa !11
  %55 = add nsw i64 %54, 59
  %56 = load i64, ptr %6, align 8, !tbaa !14
  %57 = icmp slt i64 %55, %56
  br label %58

58:                                               ; preds = %49, %44
  %59 = phi i1 [ false, %44 ], [ %57, %49 ]
  br i1 %59, label %60, label %84

60:                                               ; preds = %58
  %61 = load i32, ptr %3, align 4, !tbaa !8
  %62 = sext i32 %61 to i64
  %63 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %62) #6
  %64 = getelementptr inbounds %"struct.std::pair", ptr %63, i32 0, i32 0
  %65 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIxiSt4lessIxESaISt4pairIKxiEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48) @h, ptr noundef nonnull align 8 dereferenceable(8) %64)
  %66 = load i32, ptr %65, align 4, !tbaa !8
  %67 = add nsw i32 %66, -1
  store i32 %67, ptr %65, align 4, !tbaa !8
  %68 = load i32, ptr %3, align 4, !tbaa !8
  %69 = sext i32 %68 to i64
  %70 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %69) #6
  %71 = getelementptr inbounds %"struct.std::pair", ptr %70, i32 0, i32 0
  %72 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIxiSt4lessIxESaISt4pairIKxiEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48) @h, ptr noundef nonnull align 8 dereferenceable(8) %71)
  %73 = load i32, ptr %72, align 4, !tbaa !8
  %74 = icmp eq i32 %73, 0
  br i1 %74, label %75, label %81

75:                                               ; preds = %60
  %76 = load i32, ptr %3, align 4, !tbaa !8
  %77 = sext i32 %76 to i64
  %78 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %77) #6
  %79 = getelementptr inbounds %"struct.std::pair", ptr %78, i32 0, i32 0
  %80 = call noundef i64 @_ZNSt3mapIxiSt4lessIxESaISt4pairIKxiEEE5eraseERS3_(ptr noundef nonnull align 8 dereferenceable(48) @h, ptr noundef nonnull align 8 dereferenceable(8) %79)
  br label %81

81:                                               ; preds = %75, %60
  %82 = load i32, ptr %3, align 4, !tbaa !8
  %83 = add nsw i32 %82, 1
  store i32 %83, ptr %3, align 4, !tbaa !8
  br label %44, !llvm.loop !15

84:                                               ; preds = %58
  %85 = call noundef zeroext i1 @_ZNKSt3mapIxiSt4lessIxESaISt4pairIKxiEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(48) @h) #6
  br i1 %85, label %86, label %89

86:                                               ; preds = %84
  %87 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef -1)
  %88 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) %87, i8 noundef signext 10)
  br label %95

89:                                               ; preds = %84
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #6
  call void @_ZNSt3mapIxiSt4lessIxESaISt4pairIKxiEEE6rbeginEv(ptr dead_on_unwind writable sret(%"class.std::reverse_iterator") align 8 %9, ptr noundef nonnull align 8 dereferenceable(48) @h) #6
  %90 = call noundef ptr @_ZNKSt16reverse_iteratorISt17_Rb_tree_iteratorISt4pairIKxiEEEptEv(ptr noundef nonnull align 8 dereferenceable(8) %9)
  %91 = getelementptr inbounds %"struct.std::pair.3", ptr %90, i32 0, i32 0
  %92 = load i64, ptr %91, align 8, !tbaa !17
  %93 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %92)
  %94 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) %93, i8 noundef signext 10)
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #6
  br label %95

95:                                               ; preds = %89, %86
  br label %96

96:                                               ; preds = %95, %31
  br label %97

97:                                               ; preds = %96
  %98 = load i32, ptr %7, align 4, !tbaa !8
  %99 = add nsw i32 %98, 1
  store i32 %99, ptr %7, align 4, !tbaa !8
  br label %22, !llvm.loop !19

100:                                              ; preds = %26
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  ret i32 0
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) #1

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

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; 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)) #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIxxESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(16)) #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local { i64, i64 } @_ZSt9make_pairIRxS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #4

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIxiSt4lessIxESaISt4pairIKxiEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 8 dereferenceable(8)) #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorISt4pairIxxESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_ZNSt3mapIxiSt4lessIxESaISt4pairIKxiEEE5eraseERS3_(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 8 dereferenceable(8)) #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt3mapIxiSt4lessIxESaISt4pairIKxiEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(48)) #2 align 2

; 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) #5

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #1

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt3mapIxiSt4lessIxESaISt4pairIKxiEEE6rbeginEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(48)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_ZNKSt16reverse_iteratorISt17_Rb_tree_iteratorISt4pairIKxiEEEptEv(ptr noundef nonnull align 8 dereferenceable(8)) #4 align 2

attributes #0 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { "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 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #6 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"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 = !{!12, !13, i64 8}
!12 = !{!"_ZTSSt4pairIxxE", !13, i64 0, !13, i64 8}
!13 = !{!"long long", !10, i64 0}
!14 = !{!13, !13, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}
!17 = !{!18, !13, i64 0}
!18 = !{!"_ZTSSt4pairIKxiE", !13, i64 0, !9, i64 8}
!19 = distinct !{!19, !16}


; 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_ostream" = type { ptr, %"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::map" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<long long, std::pair<const long long, int>, std::_Select1st<std::pair<const long long, int>>, std::less<long long>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<long long, std::pair<const long long, int>, std::_Select1st<std::pair<const long long, int>>, std::less<long long>>::_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" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"struct.std::pair" = type { i64, i64 }
%"class.std::reverse_iterator" = type { %"struct.std::_Rb_tree_iterator" }
%"struct.std::_Rb_tree_iterator" = type { ptr }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@n = external dso_local global i32, align 4
@h = external dso_local global %"class.std::map", align 8
@v = external dso_local global %"class.std::vector", align 8
@_ZSt3cin = external global %"class.std::basic_istream", align 8

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca %"struct.std::pair", align 8
  %5 = alloca %"class.std::reverse_iterator", align 8
  %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)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #6
  %18 = load i32, ptr @n, align 4, !tbaa !8
  %19 = icmp sgt i32 %18, 0
  br i1 %19, label %.lr.ph15, label %._crit_edge

.lr.ph15:                                         ; preds = %0
  %20 = getelementptr inbounds i8, ptr %4, i64 8
  br label %21

._crit_edge:                                      ; preds = %69, %0
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  ret i32 0

21:                                               ; preds = %.lr.ph15, %69
  %.014 = phi i32 [ 0, %.lr.ph15 ], [ %70, %69 ]
  %.0813 = phi i32 [ 0, %.lr.ph15 ], [ %.2, %69 ]
  %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) %1)
  %23 = load i32, ptr %1, align 4, !tbaa !8
  %24 = icmp eq i32 %23, 1
  br i1 %24, label %25, label %34

25:                                               ; preds = %21
  %26 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %2)
  %27 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) %26, ptr noundef nonnull align 8 dereferenceable(8) %3)
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %4) #6
  %28 = call { i64, i64 } @_ZSt9make_pairIRxS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 8 dereferenceable(8) %3)
  %29 = extractvalue { i64, i64 } %28, 0
  store i64 %29, ptr %4, align 8
  %30 = extractvalue { i64, i64 } %28, 1
  store i64 %30, ptr %20, align 8
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) @v, ptr noundef nonnull align 8 dereferenceable(16) %4)
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %4) #6
  %31 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIxiSt4lessIxESaISt4pairIKxiEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48) @h, ptr noundef nonnull align 8 dereferenceable(8) %2)
  %32 = load i32, ptr %31, align 4, !tbaa !8
  %33 = add nsw i32 %32, 1
  store i32 %33, ptr %31, align 4, !tbaa !8
  br label %69

34:                                               ; preds = %21
  %35 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %3)
  %36 = sext i32 %.0813 to i64
  %37 = call noundef i64 @_ZNKSt6vectorISt4pairIxxESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) @v) #6
  %38 = icmp ugt i64 %37, %36
  br i1 %38, label %.lr.ph, label %.critedge

.lr.ph:                                           ; preds = %34, %57
  %indvars.iv = phi i64 [ %indvars.iv.next, %57 ], [ %36, %34 ]
  %39 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %indvars.iv) #6
  %40 = getelementptr inbounds i8, ptr %39, i64 8
  %41 = load i64, ptr %40, align 8, !tbaa !11
  %42 = add nsw i64 %41, 59
  %43 = load i64, ptr %3, align 8, !tbaa !14
  %44 = icmp slt i64 %42, %43
  br i1 %44, label %45, label %.critedge.loopexit

45:                                               ; preds = %.lr.ph
  %46 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %indvars.iv) #6
  %47 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIxiSt4lessIxESaISt4pairIKxiEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48) @h, ptr noundef nonnull align 8 dereferenceable(8) %46)
  %48 = load i32, ptr %47, align 4, !tbaa !8
  %49 = add nsw i32 %48, -1
  store i32 %49, ptr %47, align 4, !tbaa !8
  %50 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %indvars.iv) #6
  %51 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIxiSt4lessIxESaISt4pairIKxiEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48) @h, ptr noundef nonnull align 8 dereferenceable(8) %50)
  %52 = load i32, ptr %51, align 4, !tbaa !8
  %53 = icmp eq i32 %52, 0
  br i1 %53, label %54, label %57

54:                                               ; preds = %45
  %55 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %indvars.iv) #6
  %56 = call noundef i64 @_ZNSt3mapIxiSt4lessIxESaISt4pairIKxiEEE5eraseERS3_(ptr noundef nonnull align 8 dereferenceable(48) @h, ptr noundef nonnull align 8 dereferenceable(8) %55)
  br label %57

57:                                               ; preds = %54, %45
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %58 = call noundef i64 @_ZNKSt6vectorISt4pairIxxESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) @v) #6
  %59 = icmp ugt i64 %58, %indvars.iv.next
  br i1 %59, label %.lr.ph, label %.critedge.loopexit, !llvm.loop !15

.critedge.loopexit:                               ; preds = %57, %.lr.ph
  %.1.lcssa.ph.in = phi i64 [ %indvars.iv, %.lr.ph ], [ %indvars.iv.next, %57 ]
  %.1.lcssa.ph = trunc i64 %.1.lcssa.ph.in to i32
  br label %.critedge

.critedge:                                        ; preds = %.critedge.loopexit, %34
  %.1.lcssa = phi i32 [ %.0813, %34 ], [ %.1.lcssa.ph, %.critedge.loopexit ]
  %60 = call noundef zeroext i1 @_ZNKSt3mapIxiSt4lessIxESaISt4pairIKxiEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(48) @h) #6
  br i1 %60, label %61, label %64

61:                                               ; preds = %.critedge
  %62 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef -1)
  %63 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) %62, i8 noundef signext 10)
  br label %69

64:                                               ; preds = %.critedge
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #6
  call void @_ZNSt3mapIxiSt4lessIxESaISt4pairIKxiEEE6rbeginEv(ptr dead_on_unwind nonnull writable sret(%"class.std::reverse_iterator") align 8 %5, ptr noundef nonnull align 8 dereferenceable(48) @h) #6
  %65 = call noundef ptr @_ZNKSt16reverse_iteratorISt17_Rb_tree_iteratorISt4pairIKxiEEEptEv(ptr noundef nonnull align 8 dereferenceable(8) %5)
  %66 = load i64, ptr %65, align 8, !tbaa !17
  %67 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %66)
  %68 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) %67, i8 noundef signext 10)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #6
  br label %69

69:                                               ; preds = %25, %64, %61
  %.2 = phi i32 [ %.0813, %25 ], [ %.1.lcssa, %61 ], [ %.1.lcssa, %64 ]
  %70 = add nuw nsw i32 %.014, 1
  %71 = load i32, ptr @n, align 4, !tbaa !8
  %72 = icmp slt i32 %70, %71
  br i1 %72, label %21, label %._crit_edge, !llvm.loop !19
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) local_unnamed_addr #1

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

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; 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 #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIxxESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local { i64, i64 } @_ZSt9make_pairIRxS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #4

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIxiSt4lessIxESaISt4pairIKxiEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorISt4pairIxxESaIS1_EE4sizeEv(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(16) ptr @_ZNSt6vectorISt4pairIxxESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_ZNSt3mapIxiSt4lessIxESaISt4pairIKxiEEE5eraseERS3_(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt3mapIxiSt4lessIxESaISt4pairIKxiEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #2 align 2

; 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 #5

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #1

; 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 #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt3mapIxiSt4lessIxESaISt4pairIKxiEEE6rbeginEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_ZNKSt16reverse_iteratorISt17_Rb_tree_iteratorISt4pairIKxiEEEptEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #4 align 2

attributes #0 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { "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 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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #6 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"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 = !{!12, !13, i64 8}
!12 = !{!"_ZTSSt4pairIxxE", !13, i64 0, !13, i64 8}
!13 = !{!"long long", !10, i64 0}
!14 = !{!13, !13, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}
!17 = !{!18, !13, i64 0}
!18 = !{!"_ZTSSt4pairIKxiE", !13, i64 0, !9, i64 8}
!19 = distinct !{!19, !16}


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