; LLVM IR from AnneLivia/Competitive-Programming :: Online Judges/Neps Academy (EstagioOBI2003)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::pair" = type { i32, i32 }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [7 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca %"class.std::vector", align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca %"struct.std::pair", align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  store i32 1, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  call void @llvm.lifetime.start.p0(i64 24, ptr %5) #6
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #6
  br label %14

14:                                               ; preds = %126, %0
  %15 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
          to label %16 unwind label %38

16:                                               ; preds = %14
  %17 = load ptr, ptr %15, align 8, !tbaa !9
  %18 = getelementptr i8, ptr %17, i64 -24
  %19 = load i64, ptr %18, align 8
  %20 = getelementptr inbounds i8, ptr %15, i64 %19
  %21 = invoke noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264) %20)
          to label %22 unwind label %38

22:                                               ; preds = %16
  br i1 %21, label %23, label %26

23:                                               ; preds = %22
  %24 = load i32, ptr %2, align 4, !tbaa !5
  %25 = icmp ne i32 %24, 0
  br label %26

26:                                               ; preds = %23, %22
  %27 = phi i1 [ false, %22 ], [ %25, %23 ]
  br i1 %27, label %28, label %132

28:                                               ; preds = %26
  %29 = load i32, ptr %2, align 4, !tbaa !5
  %30 = sext i32 %29 to i64
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #6
  store i32 0, ptr %9, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #6
  store i32 0, ptr %10, align 4, !tbaa !5
  invoke void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS3_S4_EEEbE4typeELb1EEEOS3_OS4_(ptr noundef nonnull align 4 dereferenceable(8) %8, ptr noundef nonnull align 4 dereferenceable(4) %9, ptr noundef nonnull align 4 dereferenceable(4) %10)
          to label %31 unwind label %42

31:                                               ; preds = %28
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EE6assignEmRKS1_(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %30, ptr noundef nonnull align 4 dereferenceable(8) %8)
          to label %32 unwind label %42

32:                                               ; preds = %31
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #6
  store i32 0, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #6
  store i32 0, ptr %11, align 4, !tbaa !5
  br label %33

33:                                               ; preds = %77, %32
  %34 = load i32, ptr %11, align 4, !tbaa !5
  %35 = load i32, ptr %2, align 4, !tbaa !5
  %36 = icmp slt i32 %34, %35
  br i1 %36, label %46, label %37

37:                                               ; preds = %33
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #6
  br label %80

38:                                               ; preds = %86, %82, %80, %16, %14
  %39 = landingpad { ptr, i32 }
          cleanup
  %40 = extractvalue { ptr, i32 } %39, 0
  store ptr %40, ptr %6, align 8
  %41 = extractvalue { ptr, i32 } %39, 1
  store i32 %41, ptr %7, align 4
  br label %134

42:                                               ; preds = %31, %28
  %43 = landingpad { ptr, i32 }
          cleanup
  %44 = extractvalue { ptr, i32 } %43, 0
  store ptr %44, ptr %6, align 8
  %45 = extractvalue { ptr, i32 } %43, 1
  store i32 %45, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #6
  br label %134

46:                                               ; preds = %33
  %47 = load i32, ptr %11, align 4, !tbaa !5
  %48 = sext i32 %47 to i64
  %49 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %48) #6
  %50 = getelementptr inbounds %"struct.std::pair", ptr %49, i32 0, i32 0
  %51 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %50)
          to label %52 unwind label %72

52:                                               ; preds = %46
  %53 = load i32, ptr %11, align 4, !tbaa !5
  %54 = sext i32 %53 to i64
  %55 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %54) #6
  %56 = getelementptr inbounds %"struct.std::pair", ptr %55, i32 0, i32 1
  %57 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %51, ptr noundef nonnull align 4 dereferenceable(4) %56)
          to label %58 unwind label %72

58:                                               ; preds = %52
  %59 = load i32, ptr %11, align 4, !tbaa !5
  %60 = sext i32 %59 to i64
  %61 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %60) #6
  %62 = getelementptr inbounds %"struct.std::pair", ptr %61, i32 0, i32 1
  %63 = load i32, ptr %62, align 4, !tbaa !11
  %64 = load i32, ptr %4, align 4, !tbaa !5
  %65 = icmp sgt i32 %63, %64
  br i1 %65, label %66, label %76

66:                                               ; preds = %58
  %67 = load i32, ptr %11, align 4, !tbaa !5
  %68 = sext i32 %67 to i64
  %69 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %68) #6
  %70 = getelementptr inbounds %"struct.std::pair", ptr %69, i32 0, i32 1
  %71 = load i32, ptr %70, align 4, !tbaa !11
  store i32 %71, ptr %4, align 4, !tbaa !5
  br label %76

72:                                               ; preds = %52, %46
  %73 = landingpad { ptr, i32 }
          cleanup
  %74 = extractvalue { ptr, i32 } %73, 0
  store ptr %74, ptr %6, align 8
  %75 = extractvalue { ptr, i32 } %73, 1
  store i32 %75, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #6
  br label %134

76:                                               ; preds = %66, %58
  br label %77

77:                                               ; preds = %76
  %78 = load i32, ptr %11, align 4, !tbaa !5
  %79 = add nsw i32 %78, 1
  store i32 %79, ptr %11, align 4, !tbaa !5
  br label %33, !llvm.loop !13

80:                                               ; preds = %37
  %81 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str)
          to label %82 unwind label %38

82:                                               ; preds = %80
  %83 = load i32, ptr %3, align 4, !tbaa !5
  %84 = add nsw i32 %83, 1
  store i32 %84, ptr %3, align 4, !tbaa !5
  %85 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %81, i32 noundef %83)
          to label %86 unwind label %38

86:                                               ; preds = %82
  %87 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %85, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %88 unwind label %38

88:                                               ; preds = %86
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #6
  store i32 0, ptr %12, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #6
  store i32 0, ptr %13, align 4, !tbaa !5
  br label %89

89:                                               ; preds = %121, %88
  %90 = load i32, ptr %13, align 4, !tbaa !5
  %91 = load i32, ptr %2, align 4, !tbaa !5
  %92 = icmp slt i32 %90, %91
  br i1 %92, label %94, label %93

93:                                               ; preds = %89
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #6
  br label %124

94:                                               ; preds = %89
  %95 = load i32, ptr %13, align 4, !tbaa !5
  %96 = sext i32 %95 to i64
  %97 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %96) #6
  %98 = getelementptr inbounds %"struct.std::pair", ptr %97, i32 0, i32 1
  %99 = load i32, ptr %98, align 4, !tbaa !11
  %100 = load i32, ptr %4, align 4, !tbaa !5
  %101 = icmp eq i32 %99, %100
  br i1 %101, label %102, label %120

102:                                              ; preds = %94
  %103 = load i32, ptr %12, align 4, !tbaa !5
  %104 = icmp ne i32 %103, 0
  br i1 %104, label %105, label %112

105:                                              ; preds = %102
  %106 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.1)
          to label %107 unwind label %108

107:                                              ; preds = %105
  br label %112

108:                                              ; preds = %112, %105
  %109 = landingpad { ptr, i32 }
          cleanup
  %110 = extractvalue { ptr, i32 } %109, 0
  store ptr %110, ptr %6, align 8
  %111 = extractvalue { ptr, i32 } %109, 1
  store i32 %111, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #6
  br label %131

112:                                              ; preds = %107, %102
  %113 = load i32, ptr %13, align 4, !tbaa !5
  %114 = sext i32 %113 to i64
  %115 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %114) #6
  %116 = getelementptr inbounds %"struct.std::pair", ptr %115, i32 0, i32 0
  %117 = load i32, ptr %116, align 4, !tbaa !15
  %118 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %117)
          to label %119 unwind label %108

119:                                              ; preds = %112
  store i32 1, ptr %12, align 4, !tbaa !5
  br label %120

120:                                              ; preds = %119, %94
  br label %121

121:                                              ; preds = %120
  %122 = load i32, ptr %13, align 4, !tbaa !5
  %123 = add nsw i32 %122, 1
  store i32 %123, ptr %13, align 4, !tbaa !5
  br label %89, !llvm.loop !16

124:                                              ; preds = %93
  %125 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.2)
          to label %126 unwind label %127

126:                                              ; preds = %124
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #6
  br label %14, !llvm.loop !17

127:                                              ; preds = %124
  %128 = landingpad { ptr, i32 }
          cleanup
  %129 = extractvalue { ptr, i32 } %128, 0
  store ptr %129, ptr %6, align 8
  %130 = extractvalue { ptr, i32 } %128, 1
  store i32 %130, ptr %7, align 4
  br label %131

131:                                              ; preds = %127, %108
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #6
  br label %134

132:                                              ; preds = %26
  store i32 0, ptr %1, align 4
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #6
  call void @llvm.lifetime.end.p0(i64 24, 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
  %133 = load i32, ptr %1, align 4
  ret i32 %133

134:                                              ; preds = %131, %72, %42, %38
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #6
  call void @llvm.lifetime.end.p0(i64 24, 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
  br label %135

135:                                              ; preds = %134
  %136 = load ptr, ptr %6, align 8
  %137 = load i32, ptr %7, align 4
  %138 = insertvalue { ptr, i32 } poison, ptr %136, 0
  %139 = insertvalue { ptr, i32 } %138, i32 %137, 1
  resume { ptr, i32 } %139
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) 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)) #3

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264)) #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE6assignEmRKS1_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 4 dereferenceable(8)) #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS3_S4_EEEbE4typeELb1EEEOS3_OS4_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) unnamed_addr #2 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #5

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #3

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #4 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)) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { "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 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"vtable pointer", !8, i64 0}
!11 = !{!12, !6, i64 4}
!12 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = !{!12, !6, i64 0}
!16 = distinct !{!16, !14}
!17 = distinct !{!17, !14}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::pair" = type { i32, i32 }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [7 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca %"class.std::vector", align 8
  %3 = alloca %"struct.std::pair", align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %2) #6
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  br label %6

6:                                                ; preds = %._crit_edge35, %0
  %.024 = phi i32 [ 1, %0 ], [ %50, %._crit_edge35 ]
  %7 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
          to label %8 unwind label %24

8:                                                ; preds = %6
  %9 = load ptr, ptr %7, align 8, !tbaa !5
  %10 = getelementptr i8, ptr %9, i64 -24
  %11 = load i64, ptr %10, align 8
  %12 = getelementptr inbounds i8, ptr %7, i64 %11
  %13 = invoke noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264) %12)
          to label %14 unwind label %24

14:                                               ; preds = %8
  %15 = load i32, ptr %1, align 4
  %16 = icmp ne i32 %15, 0
  %17 = select i1 %13, i1 %16, i1 false
  br i1 %17, label %18, label %76

18:                                               ; preds = %14
  %19 = sext i32 %15 to i64
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #6
  store i32 0, ptr %4, align 4, !tbaa !8
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #6
  store i32 0, ptr %5, align 4, !tbaa !8
  call void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS3_S4_EEEbE4typeELb1EEEOS3_OS4_(ptr noundef nonnull align 4 dereferenceable(8) %3, ptr noundef nonnull align 4 dereferenceable(4) %4, ptr noundef nonnull align 4 dereferenceable(4) %5)
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EE6assignEmRKS1_(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %19, ptr noundef nonnull align 4 dereferenceable(8) %3)
          to label %20 unwind label %26

20:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #6
  %21 = load i32, ptr %1, align 4, !tbaa !8
  %22 = icmp sgt i32 %21, 0
  br i1 %22, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %45, %20
  %.022.lcssa = phi i32 [ 0, %20 ], [ %.123, %45 ]
  %23 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str)
          to label %49 unwind label %24

24:                                               ; preds = %52, %49, %._crit_edge, %8, %6
  %25 = landingpad { ptr, i32 }
          cleanup
  br label %77

26:                                               ; preds = %18
  %27 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #6
  br label %77

.lr.ph:                                           ; preds = %20, %45
  %indvars.iv = phi i64 [ %indvars.iv.next, %45 ], [ 0, %20 ]
  %.02230 = phi i32 [ %.123, %45 ], [ 0, %20 ]
  %28 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv) #6
  %29 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %28)
          to label %30 unwind label %43

30:                                               ; preds = %.lr.ph
  %31 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv) #6
  %32 = getelementptr inbounds i8, ptr %31, i64 4
  %33 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %29, ptr noundef nonnull align 4 dereferenceable(4) %32)
          to label %34 unwind label %43

34:                                               ; preds = %30
  %35 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv) #6
  %36 = getelementptr inbounds i8, ptr %35, i64 4
  %37 = load i32, ptr %36, align 4, !tbaa !11
  %38 = icmp sgt i32 %37, %.02230
  br i1 %38, label %39, label %45

39:                                               ; preds = %34
  %40 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv) #6
  %41 = getelementptr inbounds i8, ptr %40, i64 4
  %42 = load i32, ptr %41, align 4, !tbaa !11
  br label %45

43:                                               ; preds = %30, %.lr.ph
  %44 = landingpad { ptr, i32 }
          cleanup
  br label %77

45:                                               ; preds = %34, %39
  %.123 = phi i32 [ %42, %39 ], [ %.02230, %34 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %46 = load i32, ptr %1, align 4, !tbaa !8
  %47 = sext i32 %46 to i64
  %48 = icmp slt i64 %indvars.iv.next, %47
  br i1 %48, label %.lr.ph, label %._crit_edge, !llvm.loop !13

49:                                               ; preds = %._crit_edge
  %50 = add nuw nsw i32 %.024, 1
  %51 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %23, i32 noundef %.024)
          to label %52 unwind label %24

52:                                               ; preds = %49
  %53 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %51, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %.preheader unwind label %24

.preheader:                                       ; preds = %52
  %54 = load i32, ptr %1, align 4, !tbaa !8
  %55 = icmp sgt i32 %54, 0
  br i1 %55, label %.lr.ph34, label %._crit_edge35

._crit_edge35:                                    ; preds = %70, %.preheader
  %56 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.2)
          to label %6 unwind label %74, !llvm.loop !15

.lr.ph34:                                         ; preds = %.preheader, %70
  %indvars.iv37 = phi i64 [ %indvars.iv.next38, %70 ], [ 0, %.preheader ]
  %.01632 = phi i32 [ %.1, %70 ], [ 0, %.preheader ]
  %57 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv37) #6
  %58 = getelementptr inbounds i8, ptr %57, i64 4
  %59 = load i32, ptr %58, align 4, !tbaa !11
  %60 = icmp eq i32 %59, %.022.lcssa
  br i1 %60, label %61, label %70

61:                                               ; preds = %.lr.ph34
  %.not = icmp eq i32 %.01632, 0
  br i1 %.not, label %66, label %62

62:                                               ; preds = %61
  %63 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.1)
          to label %66 unwind label %64

64:                                               ; preds = %66, %62
  %65 = landingpad { ptr, i32 }
          cleanup
  br label %77

66:                                               ; preds = %62, %61
  %67 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv37) #6
  %68 = load i32, ptr %67, align 4, !tbaa !16
  %69 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %68)
          to label %70 unwind label %64

70:                                               ; preds = %66, %.lr.ph34
  %.1 = phi i32 [ %.01632, %.lr.ph34 ], [ 1, %66 ]
  %indvars.iv.next38 = add nuw nsw i64 %indvars.iv37, 1
  %71 = load i32, ptr %1, align 4, !tbaa !8
  %72 = sext i32 %71 to i64
  %73 = icmp slt i64 %indvars.iv.next38, %72
  br i1 %73, label %.lr.ph34, label %._crit_edge35, !llvm.loop !17

74:                                               ; preds = %._crit_edge35
  %75 = landingpad { ptr, i32 }
          cleanup
  br label %77

76:                                               ; preds = %14
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  ret i32 0

77:                                               ; preds = %64, %74, %43, %26, %24
  %.pn27 = phi { ptr, i32 } [ %44, %43 ], [ %25, %24 ], [ %27, %26 ], [ %65, %64 ], [ %75, %74 ]
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  resume { ptr, i32 } %.pn27
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) 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 #3

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE6assignEmRKS1_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS3_S4_EEEbE4typeELb1EEEOS3_OS4_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) unnamed_addr #2 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) 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 #3

; 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 #4 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)) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { "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 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, !9, i64 4}
!12 = !{!"_ZTSSt4pairIiiE", !9, i64 0, !9, i64 4}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}
!16 = !{!12, !9, i64 0}
!17 = distinct !{!17, !14}


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