; LLVM IR from eyangch/competitive-programming :: USACOcontests/bronze/2016.12 (cowsignal)

; 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::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str = external hidden unnamed_addr constant [13 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 [14 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 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 ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca %"class.std::__cxx11::basic_string", align 8
  %13 = alloca i32, align 4
  %14 = alloca i32, align 4
  %15 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %16 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %17 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %18 = getelementptr i8, ptr %17, i64 -24
  %19 = load i64, ptr %18, align 8
  %20 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %19
  %21 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %20, ptr noundef null)
  %22 = load ptr, ptr @stdin, align 8, !tbaa !8
  %23 = call ptr @freopen(ptr noundef @.str, ptr noundef @.str.1, ptr noundef %22)
  %24 = load ptr, ptr @stdout, align 8, !tbaa !8
  %25 = call ptr @freopen(ptr noundef @.str.2, ptr noundef @.str.3, ptr noundef %24)
  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
  %26 = 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)
  %27 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %26, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %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) %4)
  %29 = load i32, ptr %2, align 4, !tbaa !11
  %30 = zext i32 %29 to i64
  %31 = call ptr @llvm.stacksave.p0()
  store ptr %31, ptr %5, align 8
  %32 = alloca %"class.std::__cxx11::basic_string", i64 %30, align 16
  store i64 %30, ptr %6, align 8
  %33 = icmp eq i64 %30, 0
  br i1 %33, label %40, label %34

34:                                               ; preds = %0
  %35 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %32, i64 %30
  br label %36

36:                                               ; preds = %36, %34
  %37 = phi ptr [ %32, %34 ], [ %38, %36 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %37) #7
  %38 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %37, i64 1
  %39 = icmp eq ptr %38, %35
  br i1 %39, label %40, label %36

40:                                               ; preds = %36, %0
  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 = %52, %40
  %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 %59

46:                                               ; preds = %41
  %47 = load i32, ptr %7, align 4, !tbaa !11
  %48 = sext i32 %47 to i64
  %49 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %32, i64 %48
  %50 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(32) %49)
          to label %51 unwind label %55

51:                                               ; preds = %46
  br label %52

52:                                               ; preds = %51
  %53 = load i32, ptr %7, align 4, !tbaa !11
  %54 = add nsw i32 %53, 1
  store i32 %54, ptr %7, align 4, !tbaa !11
  br label %41, !llvm.loop !13

55:                                               ; preds = %46
  %56 = landingpad { ptr, i32 }
          cleanup
  %57 = extractvalue { ptr, i32 } %56, 0
  store ptr %57, ptr %8, align 8
  %58 = extractvalue { ptr, i32 } %56, 1
  store i32 %58, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #7
  br label %132

59:                                               ; preds = %45
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #7
  store i32 0, ptr %10, align 4, !tbaa !11
  br label %60

60:                                               ; preds = %118, %59
  %61 = load i32, ptr %10, align 4, !tbaa !11
  %62 = load i32, ptr %2, align 4, !tbaa !11
  %63 = icmp slt i32 %61, %62
  br i1 %63, label %65, label %64

64:                                               ; preds = %60
  store i32 5, ptr %11, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #7
  br label %122

65:                                               ; preds = %60
  call void @llvm.lifetime.start.p0(i64 32, ptr %12) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %12) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #7
  store i32 0, ptr %13, align 4, !tbaa !11
  br label %66

66:                                               ; preds = %96, %65
  %67 = load i32, ptr %13, align 4, !tbaa !11
  %68 = load i32, ptr %3, align 4, !tbaa !11
  %69 = icmp slt i32 %67, %68
  br i1 %69, label %71, label %70

70:                                               ; preds = %66
  store i32 8, ptr %11, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #7
  br label %99

71:                                               ; preds = %66
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #7
  store i32 0, ptr %14, align 4, !tbaa !11
  br label %72

72:                                               ; preds = %88, %71
  %73 = load i32, ptr %14, align 4, !tbaa !11
  %74 = load i32, ptr %4, align 4, !tbaa !11
  %75 = icmp slt i32 %73, %74
  br i1 %75, label %77, label %76

76:                                               ; preds = %72
  store i32 11, ptr %11, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #7
  br label %95

77:                                               ; preds = %72
  %78 = load i32, ptr %10, align 4, !tbaa !11
  %79 = sext i32 %78 to i64
  %80 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %32, i64 %79
  %81 = load i32, ptr %13, align 4, !tbaa !11
  %82 = sext i32 %81 to i64
  %83 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %80, i64 noundef %82)
          to label %84 unwind label %91

84:                                               ; preds = %77
  %85 = load i8, ptr %83, align 1, !tbaa !15
  %86 = invoke noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLEc(ptr noundef nonnull align 8 dereferenceable(32) %12, i8 noundef signext %85)
          to label %87 unwind label %91

87:                                               ; preds = %84
  br label %88

88:                                               ; preds = %87
  %89 = load i32, ptr %14, align 4, !tbaa !11
  %90 = add nsw i32 %89, 1
  store i32 %90, ptr %14, align 4, !tbaa !11
  br label %72, !llvm.loop !16

91:                                               ; preds = %84, %77
  %92 = landingpad { ptr, i32 }
          cleanup
  %93 = extractvalue { ptr, i32 } %92, 0
  store ptr %93, ptr %8, align 8
  %94 = extractvalue { ptr, i32 } %92, 1
  store i32 %94, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #7
  br label %121

95:                                               ; preds = %76
  br label %96

96:                                               ; preds = %95
  %97 = load i32, ptr %13, align 4, !tbaa !11
  %98 = add nsw i32 %97, 1
  store i32 %98, ptr %13, align 4, !tbaa !11
  br label %66, !llvm.loop !17

99:                                               ; preds = %70
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #7
  store i32 0, ptr %15, align 4, !tbaa !11
  br label %100

100:                                              ; preds = %110, %99
  %101 = load i32, ptr %15, align 4, !tbaa !11
  %102 = load i32, ptr %4, align 4, !tbaa !11
  %103 = icmp slt i32 %101, %102
  br i1 %103, label %105, label %104

104:                                              ; preds = %100
  store i32 14, ptr %11, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #7
  br label %117

105:                                              ; preds = %100
  %106 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull align 8 dereferenceable(32) %12)
          to label %107 unwind label %113

107:                                              ; preds = %105
  %108 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %106, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %109 unwind label %113

109:                                              ; preds = %107
  br label %110

110:                                              ; preds = %109
  %111 = load i32, ptr %15, align 4, !tbaa !11
  %112 = add nsw i32 %111, 1
  store i32 %112, ptr %15, align 4, !tbaa !11
  br label %100, !llvm.loop !18

113:                                              ; preds = %107, %105
  %114 = landingpad { ptr, i32 }
          cleanup
  %115 = extractvalue { ptr, i32 } %114, 0
  store ptr %115, ptr %8, align 8
  %116 = extractvalue { ptr, i32 } %114, 1
  store i32 %116, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #7
  br label %121

117:                                              ; preds = %104
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %12) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr %12) #7
  br label %118

118:                                              ; preds = %117
  %119 = load i32, ptr %10, align 4, !tbaa !11
  %120 = add nsw i32 %119, 1
  store i32 %120, ptr %10, align 4, !tbaa !11
  br label %60, !llvm.loop !19

121:                                              ; preds = %113, %91
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %12) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr %12) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #7
  br label %132

122:                                              ; preds = %64
  store i32 0, ptr %1, align 4
  store i32 1, ptr %11, align 4
  %123 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %32, i64 %30
  %124 = icmp eq ptr %32, %123
  br i1 %124, label %129, label %125

125:                                              ; preds = %125, %122
  %126 = phi ptr [ %123, %122 ], [ %127, %125 ]
  %127 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %126, i64 -1
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %127) #7
  %128 = icmp eq ptr %127, %32
  br i1 %128, label %129, label %125

129:                                              ; preds = %125, %122
  %130 = load ptr, ptr %5, align 8
  call void @llvm.stackrestore.p0(ptr %130)
  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
  %131 = load i32, ptr %1, align 4
  ret i32 %131

132:                                              ; preds = %121, %55
  %133 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %32, i64 %30
  %134 = icmp eq ptr %32, %133
  br i1 %134, label %139, label %135

135:                                              ; preds = %135, %132
  %136 = phi ptr [ %133, %132 ], [ %137, %135 ]
  %137 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %136, i64 -1
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %137) #7
  %138 = icmp eq ptr %137, %32
  br i1 %138, label %139, label %135

139:                                              ; preds = %135, %132
  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 %140

140:                                              ; preds = %139
  %141 = load ptr, ptr %8, align 8
  %142 = load i32, ptr %9, align 4
  %143 = insertvalue { ptr, i32 } poison, ptr %141, 0
  %144 = insertvalue { ptr, i32 } %143, i32 %142, 1
  resume { ptr, i32 } %144
}

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

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

declare ptr @freopen(ptr noundef, ptr noundef, ptr noundef) #1

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #4

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(32)) #1

declare i32 @__gxx_personality_v0(...)

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

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLEc(ptr noundef nonnull align 8 dereferenceable(32), i8 noundef signext) #5 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(32)) #6

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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #6

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #4

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

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

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"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 = !{!10, !10, i64 0}
!16 = distinct !{!16, !14}
!17 = distinct !{!17, !14}
!18 = distinct !{!18, !14}
!19 = distinct !{!19, !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::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str = external hidden unnamed_addr constant [13 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 [14 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 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 %"class.std::__cxx11::basic_string", align 8
  %5 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %6 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %7 = getelementptr i8, ptr %6, i64 -24
  %8 = load i64, ptr %7, align 8
  %9 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %8
  %10 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %9, ptr noundef null)
  %11 = load ptr, ptr @stdin, align 8, !tbaa !8
  %12 = tail call ptr @freopen(ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, ptr noundef %11)
  %13 = load ptr, ptr @stdout, align 8, !tbaa !8
  %14 = tail call ptr @freopen(ptr noundef nonnull @.str.2, ptr noundef nonnull @.str.3, ptr noundef %13)
  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
  %15 = 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)
  %16 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %15, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %17 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %16, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %18 = load i32, ptr %1, align 4, !tbaa !11
  %19 = zext i32 %18 to i64
  %20 = call ptr @llvm.stacksave.p0()
  %21 = alloca %"class.std::__cxx11::basic_string", i64 %19, align 16
  %22 = icmp eq i32 %18, 0
  br i1 %22, label %.loopexit34, label %23

23:                                               ; preds = %0
  %24 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %21, i64 %19
  br label %25

25:                                               ; preds = %25, %23
  %26 = phi ptr [ %21, %23 ], [ %27, %25 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %26) #7
  %27 = getelementptr inbounds i8, ptr %26, i64 32
  %28 = icmp eq ptr %27, %24
  br i1 %28, label %.loopexit34, label %25

.loopexit34:                                      ; preds = %25, %0
  %29 = load i32, ptr %1, align 4, !tbaa !11
  %30 = icmp sgt i32 %29, 0
  br i1 %30, label %.lr.ph, label %._crit_edge44

.preheader33:                                     ; preds = %34
  %31 = icmp sgt i32 %35, 0
  br i1 %31, label %.lr.ph43, label %._crit_edge44

.lr.ph:                                           ; preds = %.loopexit34, %34
  %indvars.iv = phi i64 [ %indvars.iv.next, %34 ], [ 0, %.loopexit34 ]
  %32 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %21, i64 %indvars.iv
  %33 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(32) %32)
          to label %34 unwind label %38

34:                                               ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %35 = load i32, ptr %1, align 4, !tbaa !11
  %36 = sext i32 %35 to i64
  %37 = icmp slt i64 %indvars.iv.next, %36
  br i1 %37, label %.lr.ph, label %.preheader33, !llvm.loop !13

38:                                               ; preds = %.lr.ph
  %39 = landingpad { ptr, i32 }
          cleanup
  br label %79

._crit_edge44:                                    ; preds = %._crit_edge41, %.loopexit34, %.preheader33
  br i1 %22, label %.loopexit30, label %.preheader29.preheader

.preheader29.preheader:                           ; preds = %._crit_edge44
  %40 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %21, i64 %19
  br label %.preheader29

.lr.ph43:                                         ; preds = %.preheader33, %._crit_edge41
  %indvars.iv50 = phi i64 [ %indvars.iv.next51, %._crit_edge41 ], [ 0, %.preheader33 ]
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %4) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #7
  %41 = load i32, ptr %2, align 4, !tbaa !11
  %42 = icmp sgt i32 %41, 0
  %.pre53 = load i32, ptr %3, align 4, !tbaa !11
  br i1 %42, label %.preheader31.lr.ph, label %.preheader32

.preheader31.lr.ph:                               ; preds = %.lr.ph43
  %43 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %21, i64 %indvars.iv50
  %44 = icmp sgt i32 %.pre53, 0
  br i1 %44, label %.preheader31, label %._crit_edge41

.preheader32:                                     ; preds = %._crit_edge, %.lr.ph43
  %45 = phi i32 [ %.pre53, %.lr.ph43 ], [ %51, %._crit_edge ]
  %46 = icmp sgt i32 %45, 0
  br i1 %46, label %.lr.ph40, label %._crit_edge41

.preheader31:                                     ; preds = %.preheader31.lr.ph, %._crit_edge
  %47 = phi i32 [ %50, %._crit_edge ], [ %41, %.preheader31.lr.ph ]
  %48 = phi i32 [ %51, %._crit_edge ], [ %.pre53, %.preheader31.lr.ph ]
  %indvars.iv47 = phi i64 [ %indvars.iv.next48, %._crit_edge ], [ 0, %.preheader31.lr.ph ]
  %49 = icmp sgt i32 %48, 0
  br i1 %49, label %.lr.ph37, label %._crit_edge

._crit_edge.loopexit:                             ; preds = %57
  %.pre = load i32, ptr %2, align 4, !tbaa !11
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %.preheader31
  %50 = phi i32 [ %.pre, %._crit_edge.loopexit ], [ %47, %.preheader31 ]
  %51 = phi i32 [ %59, %._crit_edge.loopexit ], [ %48, %.preheader31 ]
  %indvars.iv.next48 = add nuw nsw i64 %indvars.iv47, 1
  %52 = sext i32 %50 to i64
  %53 = icmp slt i64 %indvars.iv.next48, %52
  br i1 %53, label %.preheader31, label %.preheader32, !llvm.loop !15

.lr.ph37:                                         ; preds = %.preheader31, %57
  %.01636 = phi i32 [ %58, %57 ], [ 0, %.preheader31 ]
  %54 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %43, i64 noundef %indvars.iv47)
  %55 = load i8, ptr %54, align 1, !tbaa !17
  %56 = invoke noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLEc(ptr noundef nonnull align 8 dereferenceable(32) %4, i8 noundef signext %55)
          to label %57 unwind label %61

57:                                               ; preds = %.lr.ph37
  %58 = add nuw nsw i32 %.01636, 1
  %59 = load i32, ptr %3, align 4, !tbaa !11
  %60 = icmp slt i32 %58, %59
  br i1 %60, label %.lr.ph37, label %._crit_edge.loopexit, !llvm.loop !18

61:                                               ; preds = %.lr.ph37
  %62 = landingpad { ptr, i32 }
          cleanup
  br label %75

._crit_edge41:                                    ; preds = %69, %.preheader31.lr.ph, %.preheader32
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #7
  %indvars.iv.next51 = add nuw nsw i64 %indvars.iv50, 1
  %63 = load i32, ptr %1, align 4, !tbaa !11
  %64 = sext i32 %63 to i64
  %65 = icmp slt i64 %indvars.iv.next51, %64
  br i1 %65, label %.lr.ph43, label %._crit_edge44, !llvm.loop !19

.lr.ph40:                                         ; preds = %.preheader32, %69
  %.039 = phi i32 [ %70, %69 ], [ 0, %.preheader32 ]
  %66 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull align 8 dereferenceable(32) %4)
          to label %67 unwind label %73

67:                                               ; preds = %.lr.ph40
  %68 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %66, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %69 unwind label %73

69:                                               ; preds = %67
  %70 = add nuw nsw i32 %.039, 1
  %71 = load i32, ptr %3, align 4, !tbaa !11
  %72 = icmp slt i32 %70, %71
  br i1 %72, label %.lr.ph40, label %._crit_edge41, !llvm.loop !20

73:                                               ; preds = %67, %.lr.ph40
  %74 = landingpad { ptr, i32 }
          cleanup
  br label %75

75:                                               ; preds = %73, %61
  %.pn = phi { ptr, i32 } [ %62, %61 ], [ %74, %73 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #7
  br label %79

.preheader29:                                     ; preds = %.preheader29.preheader, %.preheader29
  %76 = phi ptr [ %77, %.preheader29 ], [ %40, %.preheader29.preheader ]
  %77 = getelementptr inbounds i8, ptr %76, i64 -32
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %77) #7
  %78 = icmp eq ptr %77, %21
  br i1 %78, label %.loopexit30, label %.preheader29

.loopexit30:                                      ; preds = %.preheader29, %._crit_edge44
  call void @llvm.stackrestore.p0(ptr %20)
  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

79:                                               ; preds = %75, %38
  %.pn27 = phi { ptr, i32 } [ %39, %38 ], [ %.pn, %75 ]
  br i1 %22, label %.loopexit, label %.preheader.preheader

.preheader.preheader:                             ; preds = %79
  %80 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %21, i64 %19
  br label %.preheader

.preheader:                                       ; preds = %.preheader.preheader, %.preheader
  %81 = phi ptr [ %82, %.preheader ], [ %80, %.preheader.preheader ]
  %82 = getelementptr inbounds i8, ptr %81, i64 -32
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %82) #7
  %83 = icmp eq ptr %82, %21
  br i1 %83, label %.loopexit, label %.preheader

.loopexit:                                        ; preds = %.preheader, %79
  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 } %.pn27
}

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

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

declare ptr @freopen(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #4

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #1

declare i32 @__gxx_personality_v0(...)

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

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLEc(ptr noundef nonnull align 8 dereferenceable(32), i8 noundef signext) local_unnamed_addr #5 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #6

; 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 #5 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #6

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #4

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

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

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"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}
!16 = !{!"llvm.loop.unswitch.partial.disable"}
!17 = !{!10, !10, i64 0}
!18 = distinct !{!18, !14}
!19 = distinct !{!19, !14}
!20 = distinct !{!20, !14}


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