; LLVM IR from DionysiosB/CodeForces :: 0400-0499 (469B-ChatOnline)

; 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::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 }

@.str = external hidden unnamed_addr constant [12 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 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 i32, align 4
  %6 = alloca %"class.std::vector", align 8
  %7 = alloca %"class.std::vector", align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  %13 = alloca %"struct.std::pair", align 4
  %14 = alloca i32, align 4
  %15 = alloca i32, align 4
  %16 = alloca i32, align 4
  %17 = alloca %"struct.std::pair", align 4
  %18 = alloca i8, align 1
  %19 = alloca i32, align 4
  %20 = alloca i32, align 4
  %21 = alloca i32, align 4
  %22 = alloca i32, align 4
  %23 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  %24 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2, ptr noundef %3, ptr noundef %4, ptr noundef %5)
  call void @llvm.lifetime.start.p0(i64 24, ptr %6) #5
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #5
  call void @llvm.lifetime.start.p0(i64 24, ptr %7) #5
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  store i32 0, ptr %8, align 4, !tbaa !5
  br label %25

25:                                               ; preds = %35, %0
  %26 = load i32, ptr %8, align 4, !tbaa !5
  %27 = load i32, ptr %2, align 4, !tbaa !5
  %28 = icmp slt i32 %26, %27
  br i1 %28, label %30, label %29

29:                                               ; preds = %25
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  br label %47

30:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #5
  %31 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %9, ptr noundef %10)
          to label %32 unwind label %38

32:                                               ; preds = %30
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #5
  invoke void @_ZNSt4pairIiiEC2IRiS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8) %13, ptr noundef nonnull align 4 dereferenceable(4) %9, ptr noundef nonnull align 4 dereferenceable(4) %10)
          to label %33 unwind label %42

33:                                               ; preds = %32
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %6, ptr noundef nonnull align 4 dereferenceable(8) %13)
          to label %34 unwind label %42

34:                                               ; preds = %33
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #5
  br label %35

35:                                               ; preds = %34
  %36 = load i32, ptr %8, align 4, !tbaa !5
  %37 = add nsw i32 %36, 1
  store i32 %37, ptr %8, align 4, !tbaa !5
  br label %25, !llvm.loop !9

38:                                               ; preds = %30
  %39 = landingpad { ptr, i32 }
          cleanup
  %40 = extractvalue { ptr, i32 } %39, 0
  store ptr %40, ptr %11, align 8
  %41 = extractvalue { ptr, i32 } %39, 1
  store i32 %41, ptr %12, align 4
  br label %46

42:                                               ; preds = %33, %32
  %43 = landingpad { ptr, i32 }
          cleanup
  %44 = extractvalue { ptr, i32 } %43, 0
  store ptr %44, ptr %11, align 8
  %45 = extractvalue { ptr, i32 } %43, 1
  store i32 %45, ptr %12, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #5
  br label %46

46:                                               ; preds = %42, %38
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  br label %148

47:                                               ; preds = %29
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #5
  store i32 0, ptr %14, align 4, !tbaa !5
  br label %48

48:                                               ; preds = %58, %47
  %49 = load i32, ptr %14, align 4, !tbaa !5
  %50 = load i32, ptr %3, align 4, !tbaa !5
  %51 = icmp slt i32 %49, %50
  br i1 %51, label %53, label %52

52:                                               ; preds = %48
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #5
  br label %70

53:                                               ; preds = %48
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %16) #5
  %54 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %15, ptr noundef %16)
          to label %55 unwind label %61

55:                                               ; preds = %53
  call void @llvm.lifetime.start.p0(i64 8, ptr %17) #5
  invoke void @_ZNSt4pairIiiEC2IRiS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8) %17, ptr noundef nonnull align 4 dereferenceable(4) %15, ptr noundef nonnull align 4 dereferenceable(4) %16)
          to label %56 unwind label %65

56:                                               ; preds = %55
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %7, ptr noundef nonnull align 4 dereferenceable(8) %17)
          to label %57 unwind label %65

57:                                               ; preds = %56
  call void @llvm.lifetime.end.p0(i64 8, ptr %17) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #5
  br label %58

58:                                               ; preds = %57
  %59 = load i32, ptr %14, align 4, !tbaa !5
  %60 = add nsw i32 %59, 1
  store i32 %60, ptr %14, align 4, !tbaa !5
  br label %48, !llvm.loop !11

61:                                               ; preds = %53
  %62 = landingpad { ptr, i32 }
          cleanup
  %63 = extractvalue { ptr, i32 } %62, 0
  store ptr %63, ptr %11, align 8
  %64 = extractvalue { ptr, i32 } %62, 1
  store i32 %64, ptr %12, align 4
  br label %69

65:                                               ; preds = %56, %55
  %66 = landingpad { ptr, i32 }
          cleanup
  %67 = extractvalue { ptr, i32 } %66, 0
  store ptr %67, ptr %11, align 8
  %68 = extractvalue { ptr, i32 } %66, 1
  store i32 %68, ptr %12, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %17) #5
  br label %69

69:                                               ; preds = %65, %61
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #5
  br label %148

70:                                               ; preds = %52
  call void @llvm.lifetime.start.p0(i64 1, ptr %18) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %19) #5
  store i32 0, ptr %19, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %20) #5
  %71 = load i32, ptr %4, align 4, !tbaa !5
  store i32 %71, ptr %20, align 4, !tbaa !5
  br label %72

72:                                               ; preds = %136, %70
  %73 = load i32, ptr %20, align 4, !tbaa !5
  %74 = load i32, ptr %5, align 4, !tbaa !5
  %75 = icmp sle i32 %73, %74
  br i1 %75, label %77, label %76

76:                                               ; preds = %72
  store i32 8, ptr %21, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %20) #5
  br label %139

77:                                               ; preds = %72
  store i8 0, ptr %18, align 1, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 4, ptr %22) #5
  store i32 0, ptr %22, align 4, !tbaa !5
  br label %78

78:                                               ; preds = %132, %77
  %79 = load i32, ptr %22, align 4, !tbaa !5
  %80 = sext i32 %79 to i64
  %81 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %6) #5
  %82 = icmp ult i64 %80, %81
  br i1 %82, label %84, label %83

83:                                               ; preds = %78
  store i32 11, ptr %21, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %22) #5
  br label %135

84:                                               ; preds = %78
  %85 = load i8, ptr %18, align 1, !tbaa !12, !range !14, !noundef !15
  %86 = trunc i8 %85 to i1
  br i1 %86, label %87, label %88

87:                                               ; preds = %84
  br label %132

88:                                               ; preds = %84
  call void @llvm.lifetime.start.p0(i64 4, ptr %23) #5
  store i32 0, ptr %23, align 4, !tbaa !5
  br label %89

89:                                               ; preds = %127, %88
  %90 = load i32, ptr %23, align 4, !tbaa !5
  %91 = sext i32 %90 to i64
  %92 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %7) #5
  %93 = icmp ult i64 %91, %92
  br i1 %93, label %95, label %94

94:                                               ; preds = %89
  store i32 14, ptr %21, align 4
  br label %130

95:                                               ; preds = %89
  %96 = load i32, ptr %22, align 4, !tbaa !5
  %97 = sext i32 %96 to i64
  %98 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %6, i64 noundef %97) #5
  %99 = getelementptr inbounds %"struct.std::pair", ptr %98, i32 0, i32 1
  %100 = load i32, ptr %99, align 4, !tbaa !16
  %101 = load i32, ptr %20, align 4, !tbaa !5
  %102 = load i32, ptr %23, align 4, !tbaa !5
  %103 = sext i32 %102 to i64
  %104 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %103) #5
  %105 = getelementptr inbounds %"struct.std::pair", ptr %104, i32 0, i32 0
  %106 = load i32, ptr %105, align 4, !tbaa !18
  %107 = add nsw i32 %101, %106
  %108 = icmp slt i32 %100, %107
  br i1 %108, label %123, label %109

109:                                              ; preds = %95
  %110 = load i32, ptr %20, align 4, !tbaa !5
  %111 = load i32, ptr %23, align 4, !tbaa !5
  %112 = sext i32 %111 to i64
  %113 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %112) #5
  %114 = getelementptr inbounds %"struct.std::pair", ptr %113, i32 0, i32 1
  %115 = load i32, ptr %114, align 4, !tbaa !16
  %116 = add nsw i32 %110, %115
  %117 = load i32, ptr %22, align 4, !tbaa !5
  %118 = sext i32 %117 to i64
  %119 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %6, i64 noundef %118) #5
  %120 = getelementptr inbounds %"struct.std::pair", ptr %119, i32 0, i32 0
  %121 = load i32, ptr %120, align 4, !tbaa !18
  %122 = icmp slt i32 %116, %121
  br i1 %122, label %123, label %124

123:                                              ; preds = %109, %95
  br label %127

124:                                              ; preds = %109
  store i8 1, ptr %18, align 1, !tbaa !12
  %125 = load i32, ptr %19, align 4, !tbaa !5
  %126 = add nsw i32 %125, 1
  store i32 %126, ptr %19, align 4, !tbaa !5
  store i32 14, ptr %21, align 4
  br label %130

127:                                              ; preds = %123
  %128 = load i32, ptr %23, align 4, !tbaa !5
  %129 = add nsw i32 %128, 1
  store i32 %129, ptr %23, align 4, !tbaa !5
  br label %89, !llvm.loop !19

130:                                              ; preds = %124, %94
  call void @llvm.lifetime.end.p0(i64 4, ptr %23) #5
  br label %131

131:                                              ; preds = %130
  br label %132

132:                                              ; preds = %131, %87
  %133 = load i32, ptr %22, align 4, !tbaa !5
  %134 = add nsw i32 %133, 1
  store i32 %134, ptr %22, align 4, !tbaa !5
  br label %78, !llvm.loop !20

135:                                              ; preds = %83
  br label %136

136:                                              ; preds = %135
  %137 = load i32, ptr %20, align 4, !tbaa !5
  %138 = add nsw i32 %137, 1
  store i32 %138, ptr %20, align 4, !tbaa !5
  br label %72, !llvm.loop !21

139:                                              ; preds = %76
  %140 = load i32, ptr %19, align 4, !tbaa !5
  %141 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %140)
          to label %142 unwind label %144

142:                                              ; preds = %139
  store i32 0, ptr %1, align 4
  store i32 1, ptr %21, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %19) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %18) #5
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr %7) #5
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  %143 = load i32, ptr %1, align 4
  ret i32 %143

144:                                              ; preds = %139
  %145 = landingpad { ptr, i32 }
          cleanup
  %146 = extractvalue { ptr, i32 } %145, 0
  store ptr %146, ptr %11, align 8
  %147 = extractvalue { ptr, i32 } %145, 1
  store i32 %147, ptr %12, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %19) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %18) #5
  br label %148

148:                                              ; preds = %144, %69, %46
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr %7) #5
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  br label %149

149:                                              ; preds = %148
  %150 = load ptr, ptr %11, align 8
  %151 = load i32, ptr %12, align 4
  %152 = insertvalue { ptr, i32 } poison, ptr %150, 0
  %153 = insertvalue { ptr, i32 } %152, i32 %151, 1
  resume { ptr, i32 } %153
}

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

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(8)) #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIiiEC2IRiS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) unnamed_addr #3 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 i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; 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) #3 align 2

declare i32 @printf(ptr noundef, ...) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 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 = { "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 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 #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 = { 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = !{!13, !13, i64 0}
!13 = !{!"bool", !7, i64 0}
!14 = !{i8 0, i8 2}
!15 = !{}
!16 = !{!17, !6, i64 4}
!17 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!18 = !{!17, !6, i64 0}
!19 = distinct !{!19, !10}
!20 = distinct !{!20, !10}
!21 = distinct !{!21, !10}


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

%"class.std::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 }

@.str = external hidden unnamed_addr constant [12 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 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 i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca %"class.std::vector", align 8
  %6 = alloca %"class.std::vector", align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca %"struct.std::pair", align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca %"struct.std::pair", align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #5
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2, ptr noundef nonnull %3, ptr noundef nonnull %4)
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %5) #5
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #5
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %6) #5
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #5
  %14 = load i32, ptr %1, align 4, !tbaa !5
  %15 = icmp sgt i32 %14, 0
  br i1 %15, label %.lr.ph, label %.preheader35

.preheader35:                                     ; preds = %19, %0
  %16 = load i32, ptr %2, align 4, !tbaa !5
  %17 = icmp sgt i32 %16, 0
  br i1 %17, label %.lr.ph38, label %._crit_edge

.lr.ph:                                           ; preds = %0, %19
  %.03036 = phi i32 [ %20, %19 ], [ 0, %0 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %7) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %8) #5
  %18 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %7, ptr noundef nonnull %8)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %9) #5
  call void @_ZNSt4pairIiiEC2IRiS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8) %9, ptr noundef nonnull align 4 dereferenceable(4) %7, ptr noundef nonnull align 4 dereferenceable(4) %8)
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %5, ptr noundef nonnull align 4 dereferenceable(8) %9)
          to label %19 unwind label %23

19:                                               ; preds = %.lr.ph
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %9) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %8) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #5
  %20 = add nuw nsw i32 %.03036, 1
  %21 = load i32, ptr %1, align 4, !tbaa !5
  %22 = icmp slt i32 %20, %21
  br i1 %22, label %.lr.ph, label %.preheader35, !llvm.loop !9

23:                                               ; preds = %.lr.ph
  %24 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %9) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %8) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #5
  br label %61

._crit_edge:                                      ; preds = %28, %.preheader35
  %25 = load i32, ptr %3, align 4, !tbaa !5
  %26 = load i32, ptr %4, align 4, !tbaa !5
  %.not46 = icmp sgt i32 %25, %26
  br i1 %.not46, label %._crit_edge49, label %.preheader34

.lr.ph38:                                         ; preds = %.preheader35, %28
  %.02737 = phi i32 [ %29, %28 ], [ 0, %.preheader35 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %10) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %11) #5
  %27 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %10, ptr noundef nonnull %11)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %12) #5
  call void @_ZNSt4pairIiiEC2IRiS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8) %12, ptr noundef nonnull align 4 dereferenceable(4) %10, ptr noundef nonnull align 4 dereferenceable(4) %11)
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %6, ptr noundef nonnull align 4 dereferenceable(8) %12)
          to label %28 unwind label %32

28:                                               ; preds = %.lr.ph38
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %12) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %11) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %10) #5
  %29 = add nuw nsw i32 %.02737, 1
  %30 = load i32, ptr %2, align 4, !tbaa !5
  %31 = icmp slt i32 %29, %30
  br i1 %31, label %.lr.ph38, label %._crit_edge, !llvm.loop !11

32:                                               ; preds = %.lr.ph38
  %33 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %12) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %11) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %10) #5
  br label %61

.preheader34:                                     ; preds = %._crit_edge, %._crit_edge45
  %.02248 = phi i32 [ %36, %._crit_edge45 ], [ %25, %._crit_edge ]
  %.02347 = phi i32 [ %.1.lcssa, %._crit_edge45 ], [ 0, %._crit_edge ]
  %34 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #5
  %.not51 = icmp eq i64 %34, 0
  br i1 %.not51, label %._crit_edge45, label %.lr.ph44

._crit_edge49:                                    ; preds = %._crit_edge45, %._crit_edge
  %.023.lcssa = phi i32 [ 0, %._crit_edge ], [ %.1.lcssa, %._crit_edge45 ]
  %35 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %.023.lcssa)
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %6) #5
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %5) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #5
  ret i32 0

._crit_edge45:                                    ; preds = %.loopexit, %.preheader34
  %.1.lcssa = phi i32 [ %.02347, %.preheader34 ], [ %.3, %.loopexit ]
  %36 = add nsw i32 %.02248, 1
  %37 = load i32, ptr %4, align 4, !tbaa !5
  %.not.not = icmp slt i32 %.02248, %37
  br i1 %.not.not, label %.preheader34, label %._crit_edge49, !llvm.loop !12

.lr.ph44:                                         ; preds = %.preheader34, %.loopexit
  %indvars.iv54 = phi i64 [ %indvars.iv.next55, %.loopexit ], [ 0, %.preheader34 ]
  %.142 = phi i32 [ %.3, %.loopexit ], [ %.02347, %.preheader34 ]
  %.02441 = phi i1 [ %.226, %.loopexit ], [ false, %.preheader34 ]
  br i1 %.02441, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %.lr.ph44
  %38 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %6) #5
  %.not52 = icmp eq i64 %38, 0
  br i1 %.not52, label %.loopexit, label %.lr.ph40

.lr.ph40:                                         ; preds = %.preheader, %56
  %indvars.iv = phi i64 [ %indvars.iv.next, %56 ], [ 0, %.preheader ]
  %39 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %indvars.iv54) #5
  %40 = getelementptr inbounds i8, ptr %39, i64 4
  %41 = load i32, ptr %40, align 4, !tbaa !13
  %42 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %6, i64 noundef %indvars.iv) #5
  %43 = load i32, ptr %42, align 4, !tbaa !15
  %44 = add nsw i32 %43, %.02248
  %45 = icmp slt i32 %41, %44
  br i1 %45, label %56, label %46

46:                                               ; preds = %.lr.ph40
  %47 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %6, i64 noundef %indvars.iv) #5
  %48 = getelementptr inbounds i8, ptr %47, i64 4
  %49 = load i32, ptr %48, align 4, !tbaa !13
  %50 = add nsw i32 %49, %.02248
  %51 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %indvars.iv54) #5
  %52 = load i32, ptr %51, align 4, !tbaa !15
  %53 = icmp slt i32 %50, %52
  br i1 %53, label %56, label %54

54:                                               ; preds = %46
  %55 = add nsw i32 %.142, 1
  br label %.loopexit

56:                                               ; preds = %.lr.ph40, %46
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %57 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %6) #5
  %58 = icmp ugt i64 %57, %indvars.iv.next
  br i1 %58, label %.lr.ph40, label %.loopexit, !llvm.loop !16

.loopexit:                                        ; preds = %56, %.preheader, %54, %.lr.ph44
  %.226 = phi i1 [ true, %.lr.ph44 ], [ true, %54 ], [ false, %.preheader ], [ false, %56 ]
  %.3 = phi i32 [ %.142, %.lr.ph44 ], [ %55, %54 ], [ %.142, %.preheader ], [ %.142, %56 ]
  %indvars.iv.next55 = add nuw nsw i64 %indvars.iv54, 1
  %59 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #5
  %60 = icmp ugt i64 %59, %indvars.iv.next55
  br i1 %60, label %.lr.ph44, label %._crit_edge45, !llvm.loop !17

61:                                               ; preds = %32, %23
  %.pn = phi { ptr, i32 } [ %24, %23 ], [ %33, %32 ]
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %6) #5
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %5) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #5
  resume { ptr, i32 } %.pn
}

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

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIiiEC2IRiS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) unnamed_addr #3 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 i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; 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 #3 align 2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 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 = { nofree nounwind "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 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 #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 = { 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}
!13 = !{!14, !6, i64 4}
!14 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!15 = !{!14, !6, i64 0}
!16 = distinct !{!16, !10}
!17 = distinct !{!17, !10}


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