; LLVM IR from DionysiosB/CodeForces :: 0800-0899 (868D-HugeStrings)

; 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::__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] }
%"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" }

@_Z1sB5cxx11 = external dso_local global [2000 x %"class.std::__cxx11::basic_string"], align 16
@n = external dso_local global i32, align 4
@m = external dso_local global i32, align 4
@ans = external dso_local global [2000 x i32], align 16
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_Z5solvev() #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

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) #2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #3 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca %"class.std::__cxx11::basic_string", align 8
  %6 = alloca i32, align 4
  %7 = alloca %"class.std::__cxx11::basic_string", align 8
  %8 = alloca %"class.std::__cxx11::basic_string", align 8
  %9 = alloca %"class.std::__cxx11::basic_string", align 8
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  %12 = alloca i64, align 8
  %13 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  %14 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @n)
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #6
  store i64 1, ptr %2, align 8, !tbaa !5
  br label %15

15:                                               ; preds = %25, %0
  %16 = load i64, ptr %2, align 8, !tbaa !5
  %17 = load i32, ptr @n, align 4, !tbaa !9
  %18 = sext i32 %17 to i64
  %19 = icmp sle i64 %16, %18
  br i1 %19, label %21, label %20

20:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  br label %28

21:                                               ; preds = %15
  %22 = load i64, ptr %2, align 8, !tbaa !5
  %23 = getelementptr inbounds [2000 x %"class.std::__cxx11::basic_string"], ptr @_Z1sB5cxx11, i64 0, i64 %22
  %24 = call 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) %23)
  br label %25

25:                                               ; preds = %21
  %26 = load i64, ptr %2, align 8, !tbaa !5
  %27 = add nsw i64 %26, 1
  store i64 %27, ptr %2, align 8, !tbaa !5
  br label %15, !llvm.loop !11

28:                                               ; preds = %20
  %29 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @m)
  br label %30

30:                                               ; preds = %105, %28
  %31 = load i32, ptr @m, align 4, !tbaa !9
  %32 = add nsw i32 %31, -1
  store i32 %32, ptr @m, align 4, !tbaa !9
  %33 = icmp ne i32 %31, 0
  br i1 %33, label %34, label %117

34:                                               ; preds = %30
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #6
  %35 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %3)
  %36 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) %35, ptr noundef nonnull align 8 dereferenceable(8) %4)
  call void @llvm.lifetime.start.p0(i64 32, ptr %5) #6
  %37 = load i64, ptr %3, align 8, !tbaa !5
  %38 = getelementptr inbounds [2000 x %"class.std::__cxx11::basic_string"], ptr @_Z1sB5cxx11, i64 0, i64 %37
  %39 = load i64, ptr %4, align 8, !tbaa !5
  %40 = getelementptr inbounds [2000 x %"class.std::__cxx11::basic_string"], ptr @_Z1sB5cxx11, i64 0, i64 %39
  call void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EERKS8_SA_(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %5, ptr noundef nonnull align 8 dereferenceable(32) %38, ptr noundef nonnull align 8 dereferenceable(32) %40)
  %41 = load i32, ptr @n, align 4, !tbaa !9
  %42 = add nsw i32 %41, 1
  store i32 %42, ptr @n, align 4, !tbaa !9
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds [2000 x %"class.std::__cxx11::basic_string"], ptr @_Z1sB5cxx11, i64 0, i64 %43
  %45 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32) %44, ptr noundef nonnull align 8 dereferenceable(32) %5) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %5) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #6
  %46 = load i32, ptr @n, align 4, !tbaa !9
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds [2000 x %"class.std::__cxx11::basic_string"], ptr @_Z1sB5cxx11, i64 0, i64 %47
  %49 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %48) #6
  %50 = trunc i64 %49 to i32
  store i32 %50, ptr %6, align 4, !tbaa !9
  %51 = load i32, ptr %6, align 4, !tbaa !9
  %52 = icmp sgt i32 %51, 1000
  br i1 %52, label %53, label %78

53:                                               ; preds = %34
  call void @llvm.lifetime.start.p0(i64 32, ptr %7) #6
  call void @llvm.lifetime.start.p0(i64 32, ptr %8) #6
  %54 = load i32, ptr @n, align 4, !tbaa !9
  %55 = sext i32 %54 to i64
  %56 = getelementptr inbounds [2000 x %"class.std::__cxx11::basic_string"], ptr @_Z1sB5cxx11, i64 0, i64 %55
  call void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %8, ptr noundef nonnull align 8 dereferenceable(32) %56, i64 noundef 0, i64 noundef 500)
  call void @llvm.lifetime.start.p0(i64 32, ptr %9) #6
  %57 = load i32, ptr @n, align 4, !tbaa !9
  %58 = sext i32 %57 to i64
  %59 = getelementptr inbounds [2000 x %"class.std::__cxx11::basic_string"], ptr @_Z1sB5cxx11, i64 0, i64 %58
  %60 = load i32, ptr %6, align 4, !tbaa !9
  %61 = sub nsw i32 %60, 500
  %62 = sext i32 %61 to i64
  invoke void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %9, ptr noundef nonnull align 8 dereferenceable(32) %59, i64 noundef %62, i64 noundef 500)
          to label %63 unwind label %69

63:                                               ; preds = %53
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_S9_(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %7, ptr noundef nonnull align 8 dereferenceable(32) %8, ptr noundef nonnull align 8 dereferenceable(32) %9)
          to label %64 unwind label %73

64:                                               ; preds = %63
  %65 = load i32, ptr @n, align 4, !tbaa !9
  %66 = sext i32 %65 to i64
  %67 = getelementptr inbounds [2000 x %"class.std::__cxx11::basic_string"], ptr @_Z1sB5cxx11, i64 0, i64 %66
  %68 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32) %67, ptr noundef nonnull align 8 dereferenceable(32) %7) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %9) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %9) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %8) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %8) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %7) #6
  br label %78

69:                                               ; preds = %53
  %70 = landingpad { ptr, i32 }
          cleanup
  %71 = extractvalue { ptr, i32 } %70, 0
  store ptr %71, ptr %10, align 8
  %72 = extractvalue { ptr, i32 } %70, 1
  store i32 %72, ptr %11, align 4
  br label %77

73:                                               ; preds = %63
  %74 = landingpad { ptr, i32 }
          cleanup
  %75 = extractvalue { ptr, i32 } %74, 0
  store ptr %75, ptr %10, align 8
  %76 = extractvalue { ptr, i32 } %74, 1
  store i32 %76, ptr %11, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %9) #6
  br label %77

77:                                               ; preds = %73, %69
  call void @llvm.lifetime.end.p0(i64 32, ptr %9) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %8) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %8) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %7) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #6
  br label %118

78:                                               ; preds = %64, %34
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #6
  %79 = load i64, ptr %3, align 8, !tbaa !5
  %80 = getelementptr inbounds [2000 x i32], ptr @ans, i64 0, i64 %79
  %81 = load i32, ptr %80, align 4, !tbaa !9
  %82 = load i64, ptr %4, align 8, !tbaa !5
  %83 = getelementptr inbounds [2000 x i32], ptr @ans, i64 0, i64 %82
  %84 = load i32, ptr %83, align 4, !tbaa !9
  %85 = icmp sgt i32 %81, %84
  br i1 %85, label %86, label %90

86:                                               ; preds = %78
  %87 = load i64, ptr %3, align 8, !tbaa !5
  %88 = getelementptr inbounds [2000 x i32], ptr @ans, i64 0, i64 %87
  %89 = load i32, ptr %88, align 4, !tbaa !9
  br label %94

90:                                               ; preds = %78
  %91 = load i64, ptr %4, align 8, !tbaa !5
  %92 = getelementptr inbounds [2000 x i32], ptr @ans, i64 0, i64 %91
  %93 = load i32, ptr %92, align 4, !tbaa !9
  br label %94

94:                                               ; preds = %90, %86
  %95 = phi i32 [ %89, %86 ], [ %93, %90 ]
  %96 = sext i32 %95 to i64
  store i64 %96, ptr %12, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #6
  %97 = call noundef i64 @_Z5solvev()
  store i64 %97, ptr %13, align 8, !tbaa !5
  %98 = load i64, ptr %12, align 8, !tbaa !5
  %99 = load i64, ptr %13, align 8, !tbaa !5
  %100 = icmp sgt i64 %98, %99
  br i1 %100, label %101, label %103

101:                                              ; preds = %94
  %102 = load i64, ptr %12, align 8, !tbaa !5
  br label %105

103:                                              ; preds = %94
  %104 = load i64, ptr %13, align 8, !tbaa !5
  br label %105

105:                                              ; preds = %103, %101
  %106 = phi i64 [ %102, %101 ], [ %104, %103 ]
  %107 = trunc i64 %106 to i32
  %108 = load i32, ptr @n, align 4, !tbaa !9
  %109 = sext i32 %108 to i64
  %110 = getelementptr inbounds [2000 x i32], ptr @ans, i64 0, i64 %109
  store i32 %107, ptr %110, align 4, !tbaa !9
  %111 = load i32, ptr @n, align 4, !tbaa !9
  %112 = sext i32 %111 to i64
  %113 = getelementptr inbounds [2000 x i32], ptr @ans, i64 0, i64 %112
  %114 = load i32, ptr %113, align 4, !tbaa !9
  %115 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %114)
  %116 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %115, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #6
  br label %30, !llvm.loop !13

117:                                              ; preds = %30
  ret i32 0

118:                                              ; preds = %77
  %119 = load ptr, ptr %10, align 8
  %120 = load i32, ptr %11, align 4
  %121 = insertvalue { ptr, i32 } poison, ptr %119, 0
  %122 = insertvalue { ptr, i32 } %121, i32 %120, 1
  resume { ptr, i32 } %122
}

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

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)) #4

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EERKS8_SA_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) #1

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_S9_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) #5

; Function Attrs: mustprogress uwtable
declare void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), i64 noundef, i64 noundef) #1 align 2

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) #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #5

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

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

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


; 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::__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] }
%"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" }

@_Z1sB5cxx11 = external dso_local global [2000 x %"class.std::__cxx11::basic_string"], align 16
@n = external dso_local global i32, align 4
@m = external dso_local global i32, align 4
@ans = external dso_local local_unnamed_addr global [2000 x i32], align 16
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_Z5solvev() 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) #2

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) #2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 personality ptr @__gxx_personality_v0 {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  %3 = alloca %"class.std::__cxx11::basic_string", align 8
  %4 = alloca %"class.std::__cxx11::basic_string", align 8
  %5 = alloca %"class.std::__cxx11::basic_string", align 8
  %6 = alloca %"class.std::__cxx11::basic_string", align 8
  %7 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @n)
  %8 = load i32, ptr @n, align 4, !tbaa !5
  %.not17 = icmp slt i32 %8, 1
  br i1 %.not17, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %0
  %9 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @m)
  %10 = load i32, ptr @m, align 4, !tbaa !5
  %11 = add nsw i32 %10, -1
  store i32 %11, ptr @m, align 4, !tbaa !5
  %.not1519 = icmp eq i32 %10, 0
  br i1 %.not1519, label %._crit_edge22, label %.lr.ph21

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.018 = phi i64 [ %14, %.lr.ph ], [ 1, %0 ]
  %12 = getelementptr inbounds [2000 x %"class.std::__cxx11::basic_string"], ptr @_Z1sB5cxx11, i64 0, i64 %.018
  %13 = tail call 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) %12)
  %14 = add nuw nsw i64 %.018, 1
  %15 = load i32, ptr @n, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %.not.not = icmp slt i64 %.018, %16
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !9

.lr.ph21:                                         ; preds = %._crit_edge, %54
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #7
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #7
  %17 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %1)
  %18 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) %17, ptr noundef nonnull align 8 dereferenceable(8) %2)
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %3) #7
  %19 = load i64, ptr %1, align 8, !tbaa !11
  %20 = getelementptr inbounds [2000 x %"class.std::__cxx11::basic_string"], ptr @_Z1sB5cxx11, i64 0, i64 %19
  %21 = load i64, ptr %2, align 8, !tbaa !11
  %22 = getelementptr inbounds [2000 x %"class.std::__cxx11::basic_string"], ptr @_Z1sB5cxx11, i64 0, i64 %21
  call void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EERKS8_SA_(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %3, ptr noundef nonnull align 8 dereferenceable(32) %20, ptr noundef nonnull align 8 dereferenceable(32) %22)
  %23 = load i32, ptr @n, align 4, !tbaa !5
  %24 = add nsw i32 %23, 1
  store i32 %24, ptr @n, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [2000 x %"class.std::__cxx11::basic_string"], ptr @_Z1sB5cxx11, i64 0, i64 %25
  %27 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32) %26, ptr noundef nonnull align 8 dereferenceable(32) %3) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %3) #7
  %28 = load i32, ptr @n, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [2000 x %"class.std::__cxx11::basic_string"], ptr @_Z1sB5cxx11, i64 0, i64 %29
  %31 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %30) #7
  %32 = trunc i64 %31 to i32
  %33 = icmp sgt i32 %32, 1000
  br i1 %33, label %34, label %54

34:                                               ; preds = %.lr.ph21
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %4) #7
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %5) #7
  %35 = load i32, ptr @n, align 4, !tbaa !5
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds [2000 x %"class.std::__cxx11::basic_string"], ptr @_Z1sB5cxx11, i64 0, i64 %36
  call void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %5, ptr noundef nonnull align 8 dereferenceable(32) %37, i64 noundef 0, i64 noundef 500)
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %6) #7
  %38 = load i32, ptr @n, align 4, !tbaa !5
  %39 = sext i32 %38 to i64
  %40 = getelementptr inbounds [2000 x %"class.std::__cxx11::basic_string"], ptr @_Z1sB5cxx11, i64 0, i64 %39
  %41 = add i64 %31, 4294966796
  %42 = and i64 %41, 4294967295
  invoke void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %6, ptr noundef nonnull align 8 dereferenceable(32) %40, i64 noundef %42, i64 noundef 500)
          to label %43 unwind label %49

43:                                               ; preds = %34
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_S9_(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %4, ptr noundef nonnull align 8 dereferenceable(32) %5, ptr noundef nonnull align 8 dereferenceable(32) %6)
          to label %44 unwind label %51

44:                                               ; preds = %43
  %45 = load i32, ptr @n, align 4, !tbaa !5
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds [2000 x %"class.std::__cxx11::basic_string"], ptr @_Z1sB5cxx11, i64 0, i64 %46
  %48 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32) %47, ptr noundef nonnull align 8 dereferenceable(32) %4) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %6) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %5) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #7
  br label %54

49:                                               ; preds = %34
  %50 = landingpad { ptr, i32 }
          cleanup
  br label %53

51:                                               ; preds = %43
  %52 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #7
  br label %53

53:                                               ; preds = %51, %49
  %.pn = phi { ptr, i32 } [ %52, %51 ], [ %50, %49 ]
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %6) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %5) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #7
  resume { ptr, i32 } %.pn

54:                                               ; preds = %44, %.lr.ph21
  %55 = load i64, ptr %1, align 8, !tbaa !11
  %56 = getelementptr inbounds [2000 x i32], ptr @ans, i64 0, i64 %55
  %57 = load i32, ptr %56, align 4, !tbaa !5
  %58 = load i64, ptr %2, align 8, !tbaa !11
  %59 = getelementptr inbounds [2000 x i32], ptr @ans, i64 0, i64 %58
  %60 = load i32, ptr %59, align 4, !tbaa !5
  %. = call i32 @llvm.smax.i32(i32 %57, i32 %60)
  %61 = sext i32 %. to i64
  %62 = call noundef i64 @_Z5solvev()
  %63 = call i64 @llvm.smax.i64(i64 %62, i64 %61)
  %64 = trunc i64 %63 to i32
  %65 = load i32, ptr @n, align 4, !tbaa !5
  %66 = sext i32 %65 to i64
  %67 = getelementptr inbounds [2000 x i32], ptr @ans, i64 0, i64 %66
  store i32 %64, ptr %67, align 4, !tbaa !5
  %68 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %64)
  %69 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %68, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #7
  %70 = load i32, ptr @m, align 4, !tbaa !5
  %71 = add nsw i32 %70, -1
  store i32 %71, ptr @m, align 4, !tbaa !5
  %.not15 = icmp eq i32 %70, 0
  br i1 %.not15, label %._crit_edge22, label %.lr.ph21, !llvm.loop !13

._crit_edge22:                                    ; preds = %54, %._crit_edge
  ret i32 0
}

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

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 #4

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EERKS8_SA_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_S9_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #5

; Function Attrs: mustprogress uwtable
declare void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), i64 noundef, i64 noundef) local_unnamed_addr #1 align 2

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 #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #5

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.smax.i64(i64, i64) #6

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smax.i32(i32, i32) #6

attributes #0 = { 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 #1 = { 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 #2 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #6 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = distinct !{!13, !10}


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