; LLVM IR from eyangch/competitive-programming :: USACOtraining/3.2 (butter)

; 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
@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@stdin = external global ptr, align 8
@.str.2 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1
@stdout = external global ptr, align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z3dijiRA800_iRA800_St6vectorISt4pairIiiESaIS3_EEi(i32 noundef, ptr noundef nonnull align 4 dereferenceable(3200), ptr noundef nonnull align 8 dereferenceable(19200), i32 noundef) #0

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

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4fillIPiiEvT_S1_RKT0_(ptr noundef, ptr noundef, ptr noundef nonnull align 4 dereferenceable(4)) #2

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

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #3 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 [800 x i32], align 16
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca [800 x %"class.std::vector"], align 16
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  %14 = alloca ptr, align 8
  %15 = alloca i32, align 4
  %16 = alloca %"struct.std::pair", align 4
  %17 = alloca i32, align 4
  %18 = alloca %"struct.std::pair", align 4
  %19 = alloca i32, align 4
  %20 = alloca i32, align 4
  %21 = alloca i32, align 4
  %22 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %23 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %24 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %25 = getelementptr i8, ptr %24, i64 -24
  %26 = load i64, ptr %25, align 8
  %27 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %26
  %28 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %27, ptr noundef null)
  %29 = load ptr, ptr @stdin, align 8, !tbaa !8
  %30 = call ptr @freopen(ptr noundef @.str, ptr noundef @.str.1, ptr noundef %29)
  %31 = load ptr, ptr @stdout, align 8, !tbaa !8
  %32 = call ptr @freopen(ptr noundef @.str.2, ptr noundef @.str.3, ptr noundef %31)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #7
  %33 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %34 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %33, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %35 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %34, ptr noundef nonnull align 4 dereferenceable(4) %4)
  call void @llvm.lifetime.start.p0(i64 3200, ptr %5) #7
  %36 = getelementptr inbounds [800 x i32], ptr %5, i64 0, i64 0
  %37 = getelementptr inbounds [800 x i32], ptr %5, i64 0, i64 0
  %38 = load i32, ptr %2, align 4, !tbaa !11
  %39 = sext i32 %38 to i64
  %40 = getelementptr inbounds i32, ptr %37, i64 %39
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #7
  store i32 0, ptr %6, align 4, !tbaa !11
  call void @_ZSt4fillIPiiEvT_S1_RKT0_(ptr noundef %36, ptr noundef %40, ptr noundef nonnull align 4 dereferenceable(4) %6)
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #7
  store i32 0, ptr %7, align 4, !tbaa !11
  br label %41

41:                                               ; preds = %54, %0
  %42 = load i32, ptr %7, align 4, !tbaa !11
  %43 = load i32, ptr %2, align 4, !tbaa !11
  %44 = icmp slt i32 %42, %43
  br i1 %44, label %46, label %45

45:                                               ; preds = %41
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #7
  br label %57

46:                                               ; preds = %41
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #7
  %47 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %8)
  %48 = load i32, ptr %8, align 4, !tbaa !11
  %49 = sub nsw i32 %48, 1
  %50 = sext i32 %49 to i64
  %51 = getelementptr inbounds [800 x i32], ptr %5, i64 0, i64 %50
  %52 = load i32, ptr %51, align 4, !tbaa !11
  %53 = add nsw i32 %52, 1
  store i32 %53, ptr %51, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #7
  br label %54

54:                                               ; preds = %46
  %55 = load i32, ptr %7, align 4, !tbaa !11
  %56 = add nsw i32 %55, 1
  store i32 %56, ptr %7, align 4, !tbaa !11
  br label %41, !llvm.loop !13

57:                                               ; preds = %45
  call void @llvm.lifetime.start.p0(i64 19200, ptr %9) #7
  %58 = getelementptr inbounds [800 x %"class.std::vector"], ptr %9, i32 0, i32 0
  %59 = getelementptr inbounds %"class.std::vector", ptr %58, i64 800
  br label %60

60:                                               ; preds = %60, %57
  %61 = phi ptr [ %58, %57 ], [ %62, %60 ]
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %61) #7
  %62 = getelementptr inbounds %"class.std::vector", ptr %61, i64 1
  %63 = icmp eq ptr %62, %59
  br i1 %63, label %64, label %60

64:                                               ; preds = %60
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #7
  store i32 0, ptr %10, align 4, !tbaa !11
  br label %65

65:                                               ; preds = %93, %64
  %66 = load i32, ptr %10, align 4, !tbaa !11
  %67 = load i32, ptr %4, align 4, !tbaa !11
  %68 = icmp slt i32 %66, %67
  br i1 %68, label %70, label %69

69:                                               ; preds = %65
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #7
  br label %109

70:                                               ; preds = %65
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #7
  %71 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %11)
          to label %72 unwind label %96

72:                                               ; preds = %70
  %73 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %71, ptr noundef nonnull align 4 dereferenceable(4) %12)
          to label %74 unwind label %96

74:                                               ; preds = %72
  %75 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %73, ptr noundef nonnull align 4 dereferenceable(4) %13)
          to label %76 unwind label %96

76:                                               ; preds = %74
  %77 = load i32, ptr %11, align 4, !tbaa !11
  %78 = sub nsw i32 %77, 1
  %79 = sext i32 %78 to i64
  %80 = getelementptr inbounds [800 x %"class.std::vector"], ptr %9, i64 0, i64 %79
  call void @llvm.lifetime.start.p0(i64 8, ptr %16) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %17) #7
  %81 = load i32, ptr %12, align 4, !tbaa !11
  %82 = sub nsw i32 %81, 1
  store i32 %82, ptr %17, align 4, !tbaa !11
  invoke void @_ZNSt4pairIiiEC2IiRiTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8) %16, ptr noundef nonnull align 4 dereferenceable(4) %17, ptr noundef nonnull align 4 dereferenceable(4) %13)
          to label %83 unwind label %100

83:                                               ; preds = %76
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %80, ptr noundef nonnull align 4 dereferenceable(8) %16)
          to label %84 unwind label %100

84:                                               ; preds = %83
  call void @llvm.lifetime.end.p0(i64 4, ptr %17) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #7
  %85 = load i32, ptr %12, align 4, !tbaa !11
  %86 = sub nsw i32 %85, 1
  %87 = sext i32 %86 to i64
  %88 = getelementptr inbounds [800 x %"class.std::vector"], ptr %9, i64 0, i64 %87
  call void @llvm.lifetime.start.p0(i64 8, ptr %18) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %19) #7
  %89 = load i32, ptr %11, align 4, !tbaa !11
  %90 = sub nsw i32 %89, 1
  store i32 %90, ptr %19, align 4, !tbaa !11
  invoke void @_ZNSt4pairIiiEC2IiRiTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8) %18, ptr noundef nonnull align 4 dereferenceable(4) %19, ptr noundef nonnull align 4 dereferenceable(4) %13)
          to label %91 unwind label %104

91:                                               ; preds = %84
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %88, ptr noundef nonnull align 4 dereferenceable(8) %18)
          to label %92 unwind label %104

92:                                               ; preds = %91
  call void @llvm.lifetime.end.p0(i64 4, ptr %19) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %18) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #7
  br label %93

93:                                               ; preds = %92
  %94 = load i32, ptr %10, align 4, !tbaa !11
  %95 = add nsw i32 %94, 1
  store i32 %95, ptr %10, align 4, !tbaa !11
  br label %65, !llvm.loop !15

96:                                               ; preds = %74, %72, %70
  %97 = landingpad { ptr, i32 }
          cleanup
  %98 = extractvalue { ptr, i32 } %97, 0
  store ptr %98, ptr %14, align 8
  %99 = extractvalue { ptr, i32 } %97, 1
  store i32 %99, ptr %15, align 4
  br label %108

100:                                              ; preds = %83, %76
  %101 = landingpad { ptr, i32 }
          cleanup
  %102 = extractvalue { ptr, i32 } %101, 0
  store ptr %102, ptr %14, align 8
  %103 = extractvalue { ptr, i32 } %101, 1
  store i32 %103, ptr %15, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %17) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #7
  br label %108

104:                                              ; preds = %91, %84
  %105 = landingpad { ptr, i32 }
          cleanup
  %106 = extractvalue { ptr, i32 } %105, 0
  store ptr %106, ptr %14, align 8
  %107 = extractvalue { ptr, i32 } %105, 1
  store i32 %107, ptr %15, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %19) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %18) #7
  br label %108

108:                                              ; preds = %104, %100, %96
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #7
  br label %149

109:                                              ; preds = %69
  call void @llvm.lifetime.start.p0(i64 4, ptr %20) #7
  store i32 2147483647, ptr %20, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %21) #7
  store i32 0, ptr %21, align 4, !tbaa !11
  br label %110

110:                                              ; preds = %123, %109
  %111 = load i32, ptr %21, align 4, !tbaa !11
  %112 = load i32, ptr %3, align 4, !tbaa !11
  %113 = icmp slt i32 %111, %112
  br i1 %113, label %115, label %114

114:                                              ; preds = %110
  call void @llvm.lifetime.end.p0(i64 4, ptr %21) #7
  br label %130

115:                                              ; preds = %110
  call void @llvm.lifetime.start.p0(i64 4, ptr %22) #7
  %116 = load i32, ptr %3, align 4, !tbaa !11
  %117 = load i32, ptr %21, align 4, !tbaa !11
  %118 = invoke noundef i32 @_Z3dijiRA800_iRA800_St6vectorISt4pairIiiESaIS3_EEi(i32 noundef %116, ptr noundef nonnull align 4 dereferenceable(3200) %5, ptr noundef nonnull align 8 dereferenceable(19200) %9, i32 noundef %117)
          to label %119 unwind label %126

119:                                              ; preds = %115
  store i32 %118, ptr %22, align 4, !tbaa !11
  %120 = invoke noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %20, ptr noundef nonnull align 4 dereferenceable(4) %22)
          to label %121 unwind label %126

121:                                              ; preds = %119
  %122 = load i32, ptr %120, align 4, !tbaa !11
  store i32 %122, ptr %20, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %22) #7
  br label %123

123:                                              ; preds = %121
  %124 = load i32, ptr %21, align 4, !tbaa !11
  %125 = add nsw i32 %124, 1
  store i32 %125, ptr %21, align 4, !tbaa !11
  br label %110, !llvm.loop !16

126:                                              ; preds = %119, %115
  %127 = landingpad { ptr, i32 }
          cleanup
  %128 = extractvalue { ptr, i32 } %127, 0
  store ptr %128, ptr %14, align 8
  %129 = extractvalue { ptr, i32 } %127, 1
  store i32 %129, ptr %15, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %22) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %21) #7
  br label %142

130:                                              ; preds = %114
  %131 = load i32, ptr %20, align 4, !tbaa !11
  %132 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %131)
          to label %133 unwind label %138

133:                                              ; preds = %130
  %134 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %132, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %135 unwind label %138

135:                                              ; preds = %133
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %20) #7
  %136 = getelementptr inbounds [800 x %"class.std::vector"], ptr %9, i32 0, i32 0
  %137 = getelementptr inbounds %"class.std::vector", ptr %136, i64 800
  br label %143

138:                                              ; preds = %133, %130
  %139 = landingpad { ptr, i32 }
          cleanup
  %140 = extractvalue { ptr, i32 } %139, 0
  store ptr %140, ptr %14, align 8
  %141 = extractvalue { ptr, i32 } %139, 1
  store i32 %141, ptr %15, align 4
  br label %142

142:                                              ; preds = %138, %126
  call void @llvm.lifetime.end.p0(i64 4, ptr %20) #7
  br label %149

143:                                              ; preds = %143, %135
  %144 = phi ptr [ %137, %135 ], [ %145, %143 ]
  %145 = getelementptr inbounds %"class.std::vector", ptr %144, i64 -1
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %145) #7
  %146 = icmp eq ptr %145, %136
  br i1 %146, label %147, label %143

147:                                              ; preds = %143
  call void @llvm.lifetime.end.p0(i64 19200, ptr %9) #7
  call void @llvm.lifetime.end.p0(i64 3200, ptr %5) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  %148 = load i32, ptr %1, align 4
  ret i32 %148

149:                                              ; preds = %142, %108
  %150 = getelementptr inbounds [800 x %"class.std::vector"], ptr %9, i32 0, i32 0
  %151 = getelementptr inbounds %"class.std::vector", ptr %150, i64 800
  br label %152

152:                                              ; preds = %152, %149
  %153 = phi ptr [ %151, %149 ], [ %154, %152 ]
  %154 = getelementptr inbounds %"class.std::vector", ptr %153, i64 -1
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %154) #7
  %155 = icmp eq ptr %154, %150
  br i1 %155, label %156, label %152

156:                                              ; preds = %152
  call void @llvm.lifetime.end.p0(i64 19200, ptr %9) #7
  call void @llvm.lifetime.end.p0(i64 3200, ptr %5) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  br label %157

157:                                              ; preds = %156
  %158 = load ptr, ptr %14, align 8
  %159 = load i32, ptr %15, align 4
  %160 = insertvalue { ptr, i32 } poison, ptr %158, 0
  %161 = insertvalue { ptr, i32 } %160, i32 %159, 1
  resume { ptr, i32 } %161
}

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

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) #5 align 2

declare ptr @freopen(ptr noundef, ptr noundef, ptr noundef) #4

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #5 align 2

; 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)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIiiEC2IiRiTnNSt9enable_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 #5 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #6

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

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #5 align 2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { mustprogress 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 #6 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #7 = { nounwind }

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

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"any pointer", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !10, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}
!16 = distinct !{!16, !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
@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@stdin = external local_unnamed_addr global ptr, align 8
@.str.2 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1
@stdout = external local_unnamed_addr global ptr, align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z3dijiRA800_iRA800_St6vectorISt4pairIiiESaIS3_EEi(i32 noundef, ptr noundef nonnull align 4 dereferenceable(3200), ptr noundef nonnull align 8 dereferenceable(19200), i32 noundef) local_unnamed_addr #0

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

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4fillIPiiEvT_S1_RKT0_(ptr noundef, ptr noundef, ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

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

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca [800 x i32], align 16
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca [800 x %"class.std::vector"], align 16
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca %"struct.std::pair", align 4
  %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 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %18 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %19 = getelementptr i8, ptr %18, i64 -24
  %20 = load i64, ptr %19, align 8
  %21 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %20
  %22 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %21, ptr noundef null)
  %23 = load ptr, ptr @stdin, align 8, !tbaa !8
  %24 = tail call ptr @freopen(ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, ptr noundef %23)
  %25 = load ptr, ptr @stdout, align 8, !tbaa !8
  %26 = tail call ptr @freopen(ptr noundef nonnull @.str.2, ptr noundef nonnull @.str.3, ptr noundef %25)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #7
  %27 = 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)
  %28 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %27, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %29 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %28, ptr noundef nonnull align 4 dereferenceable(4) %3)
  call void @llvm.lifetime.start.p0(i64 3200, ptr nonnull %4) #7
  %30 = load i32, ptr %1, align 4, !tbaa !11
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds i32, ptr %4, i64 %31
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #7
  store i32 0, ptr %5, align 4, !tbaa !11
  call void @_ZSt4fillIPiiEvT_S1_RKT0_(ptr noundef nonnull %4, ptr noundef nonnull %32, ptr noundef nonnull align 4 dereferenceable(4) %5)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #7
  %33 = load i32, ptr %1, align 4, !tbaa !11
  %34 = icmp sgt i32 %33, 0
  br i1 %34, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %0
  call void @llvm.lifetime.start.p0(i64 19200, ptr nonnull %7) #7
  br label %45

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.01423 = phi i32 [ %42, %.lr.ph ], [ 0, %0 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #7
  %35 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %6)
  %36 = load i32, ptr %6, align 4, !tbaa !11
  %37 = add nsw i32 %36, -1
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds [800 x i32], ptr %4, i64 0, i64 %38
  %40 = load i32, ptr %39, align 4, !tbaa !11
  %41 = add nsw i32 %40, 1
  store i32 %41, ptr %39, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #7
  %42 = add nuw nsw i32 %.01423, 1
  %43 = load i32, ptr %1, align 4, !tbaa !11
  %44 = icmp slt i32 %42, %43
  br i1 %44, label %.lr.ph, label %._crit_edge, !llvm.loop !13

45:                                               ; preds = %45, %._crit_edge
  %.idx = phi i64 [ 0, %._crit_edge ], [ %.add, %45 ]
  %.ptr = getelementptr inbounds i8, ptr %7, i64 %.idx
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %.ptr) #7
  %.add = add nuw nsw i64 %.idx, 24
  %46 = icmp eq i64 %.add, 19200
  br i1 %46, label %.preheader, label %45

.preheader:                                       ; preds = %45
  %47 = getelementptr inbounds i8, ptr %7, i64 19200
  %48 = load i32, ptr %3, align 4, !tbaa !11
  %49 = icmp sgt i32 %48, 0
  br i1 %49, label %.lr.ph25, label %._crit_edge26

._crit_edge26:                                    ; preds = %71, %.preheader
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %15) #7
  store i32 2147483647, ptr %15, align 4, !tbaa !11
  %50 = load i32, ptr %2, align 4, !tbaa !11
  %51 = icmp sgt i32 %50, 0
  br i1 %51, label %.lr.ph29, label %._crit_edge30

.lr.ph25:                                         ; preds = %.preheader, %71
  %.01324 = phi i32 [ %72, %71 ], [ 0, %.preheader ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %8) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %9) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %10) #7
  %52 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %8)
          to label %53 unwind label %75

53:                                               ; preds = %.lr.ph25
  %54 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %52, ptr noundef nonnull align 4 dereferenceable(4) %9)
          to label %55 unwind label %75

55:                                               ; preds = %53
  %56 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %54, ptr noundef nonnull align 4 dereferenceable(4) %10)
          to label %57 unwind label %75

57:                                               ; preds = %55
  %58 = load i32, ptr %8, align 4, !tbaa !11
  %59 = add nsw i32 %58, -1
  %60 = sext i32 %59 to i64
  %61 = getelementptr inbounds [800 x %"class.std::vector"], ptr %7, i64 0, i64 %60
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %11) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %12) #7
  %62 = load i32, ptr %9, align 4, !tbaa !11
  %63 = add nsw i32 %62, -1
  store i32 %63, ptr %12, align 4, !tbaa !11
  call void @_ZNSt4pairIiiEC2IiRiTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8) %11, ptr noundef nonnull align 4 dereferenceable(4) %12, ptr noundef nonnull align 4 dereferenceable(4) %10)
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %61, ptr noundef nonnull align 4 dereferenceable(8) %11)
          to label %64 unwind label %77

64:                                               ; preds = %57
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %12) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %11) #7
  %65 = load i32, ptr %9, align 4, !tbaa !11
  %66 = add nsw i32 %65, -1
  %67 = sext i32 %66 to i64
  %68 = getelementptr inbounds [800 x %"class.std::vector"], ptr %7, i64 0, i64 %67
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %13) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %14) #7
  %69 = load i32, ptr %8, align 4, !tbaa !11
  %70 = add nsw i32 %69, -1
  store i32 %70, ptr %14, align 4, !tbaa !11
  call void @_ZNSt4pairIiiEC2IiRiTnNSt9enable_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) %14, ptr noundef nonnull align 4 dereferenceable(4) %10)
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %68, ptr noundef nonnull align 4 dereferenceable(8) %13)
          to label %71 unwind label %79

71:                                               ; preds = %64
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %14) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %13) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %10) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %9) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %8) #7
  %72 = add nuw nsw i32 %.01324, 1
  %73 = load i32, ptr %3, align 4, !tbaa !11
  %74 = icmp slt i32 %72, %73
  br i1 %74, label %.lr.ph25, label %._crit_edge26, !llvm.loop !15

75:                                               ; preds = %55, %53, %.lr.ph25
  %76 = landingpad { ptr, i32 }
          cleanup
  br label %81

77:                                               ; preds = %57
  %78 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %12) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %11) #7
  br label %81

79:                                               ; preds = %64
  %80 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %14) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %13) #7
  br label %81

81:                                               ; preds = %79, %77, %75
  %.pn20 = phi { ptr, i32 } [ %80, %79 ], [ %78, %77 ], [ %76, %75 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %10) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %9) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %8) #7
  br label %105

._crit_edge30:                                    ; preds = %86, %._crit_edge26
  %82 = phi i32 [ 2147483647, %._crit_edge26 ], [ %88, %86 ]
  %83 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %82)
          to label %94 unwind label %97

.lr.ph29:                                         ; preds = %._crit_edge26, %86
  %84 = phi i32 [ %90, %86 ], [ %50, %._crit_edge26 ]
  %.027 = phi i32 [ %89, %86 ], [ 0, %._crit_edge26 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %16) #7
  %85 = invoke noundef i32 @_Z3dijiRA800_iRA800_St6vectorISt4pairIiiESaIS3_EEi(i32 noundef %84, ptr noundef nonnull align 4 dereferenceable(3200) %4, ptr noundef nonnull align 8 dereferenceable(19200) %7, i32 noundef %.027)
          to label %86 unwind label %92

86:                                               ; preds = %.lr.ph29
  store i32 %85, ptr %16, align 4, !tbaa !11
  %87 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %15, ptr noundef nonnull align 4 dereferenceable(4) %16)
  %88 = load i32, ptr %87, align 4, !tbaa !11
  store i32 %88, ptr %15, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %16) #7
  %89 = add nuw nsw i32 %.027, 1
  %90 = load i32, ptr %2, align 4, !tbaa !11
  %91 = icmp slt i32 %89, %90
  br i1 %91, label %.lr.ph29, label %._crit_edge30, !llvm.loop !16

92:                                               ; preds = %.lr.ph29
  %93 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %16) #7
  br label %99

94:                                               ; preds = %._crit_edge30
  %95 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %83, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %96 unwind label %97

96:                                               ; preds = %94
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %15) #7
  br label %100

97:                                               ; preds = %94, %._crit_edge30
  %98 = landingpad { ptr, i32 }
          cleanup
  br label %99

99:                                               ; preds = %97, %92
  %.pn = phi { ptr, i32 } [ %93, %92 ], [ %98, %97 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %15) #7
  br label %105

100:                                              ; preds = %100, %96
  %101 = phi ptr [ %47, %96 ], [ %102, %100 ]
  %102 = getelementptr inbounds i8, ptr %101, i64 -24
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %102) #7
  %103 = icmp eq ptr %102, %7
  br i1 %103, label %104, label %100

104:                                              ; preds = %100
  call void @llvm.lifetime.end.p0(i64 19200, ptr nonnull %7) #7
  call void @llvm.lifetime.end.p0(i64 3200, ptr nonnull %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #7
  ret i32 0

105:                                              ; preds = %99, %81
  %.pn20.pn = phi { ptr, i32 } [ %.pn20, %81 ], [ %.pn, %99 ]
  br label %106

106:                                              ; preds = %106, %105
  %107 = phi ptr [ %47, %105 ], [ %108, %106 ]
  %108 = getelementptr inbounds i8, ptr %107, i64 -24
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %108) #7
  %109 = icmp eq ptr %108, %7
  br i1 %109, label %110, label %106

110:                                              ; preds = %106
  call void @llvm.lifetime.end.p0(i64 19200, ptr nonnull %7) #7
  call void @llvm.lifetime.end.p0(i64 3200, ptr nonnull %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #7
  resume { ptr, i32 } %.pn20.pn
}

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

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) local_unnamed_addr #5 align 2

declare ptr @freopen(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #4

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #5 align 2

; 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 #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIiiEC2IiRiTnNSt9enable_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 #5 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #6

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

; 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 #0 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)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #5 align 2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { mustprogress 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 #6 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #7 = { nounwind }

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

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"any pointer", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !10, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}
!16 = distinct !{!16, !14}


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