; LLVM IR from eyangch/competitive-programming :: USACOcontests/gold/2016.12 (moocast)

; 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" }
%"struct.std::pair" = type { i32, i32 }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str = external hidden unnamed_addr constant [11 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 [12 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 zeroext i1 @_Z5worksiPSt4pairIiiEx(i32 noundef, ptr noundef, i64 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 nounwind uwtable
declare dso_local noundef double @_ZSt3powIiiEN9__gnu_cxx9__promoteIDTplcvNS1_IT_Xsr3std12__is_integerIS2_EE7__valueEE6__typeELi0EcvNS1_IT0_Xsr3std12__is_integerIS5_EE7__valueEE6__typeELi0EEXsr3std12__is_integerIS8_EE7__valueEE6__typeES2_S5_(i32 noundef, i32 noundef) #2

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

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #3 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca [1000 x %"struct.std::pair"], align 16
  %4 = alloca i32, align 4
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca i8, align 1
  store i32 0, ptr %1, align 4
  %9 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %10 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %11 = getelementptr i8, ptr %10, i64 -24
  %12 = load i64, ptr %11, align 8
  %13 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %12
  %14 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %13, ptr noundef null)
  %15 = load ptr, ptr @stdin, align 8, !tbaa !8
  %16 = call ptr @freopen(ptr noundef @.str, ptr noundef @.str.1, ptr noundef %15)
  %17 = load ptr, ptr @stdout, align 8, !tbaa !8
  %18 = call ptr @freopen(ptr noundef @.str.2, ptr noundef @.str.3, ptr noundef %17)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #7
  %19 = 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)
  call void @llvm.lifetime.start.p0(i64 8000, ptr %3) #7
  %20 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr %3, i32 0, i32 0
  %21 = getelementptr inbounds %"struct.std::pair", ptr %20, i64 1000
  br label %22

22:                                               ; preds = %22, %0
  %23 = phi ptr [ %20, %0 ], [ %24, %22 ]
  call void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXsr6__and_ISt37__is_implicitly_default_constructibleIT_ES3_IT0_EEE5valueEbE4typeELb1EEEv(ptr noundef nonnull align 4 dereferenceable(8) %23)
  %24 = getelementptr inbounds %"struct.std::pair", ptr %23, i64 1
  %25 = icmp eq ptr %24, %21
  br i1 %25, label %26, label %22

26:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #7
  store i32 0, ptr %4, align 4, !tbaa !11
  br label %27

27:                                               ; preds = %43, %26
  %28 = load i32, ptr %4, align 4, !tbaa !11
  %29 = load i32, ptr %2, align 4, !tbaa !11
  %30 = icmp slt i32 %28, %29
  br i1 %30, label %32, label %31

31:                                               ; preds = %27
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #7
  br label %46

32:                                               ; preds = %27
  %33 = load i32, ptr %4, align 4, !tbaa !11
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr %3, i64 0, i64 %34
  %36 = getelementptr inbounds %"struct.std::pair", ptr %35, i32 0, i32 0
  %37 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %36)
  %38 = load i32, ptr %4, align 4, !tbaa !11
  %39 = sext i32 %38 to i64
  %40 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr %3, i64 0, i64 %39
  %41 = getelementptr inbounds %"struct.std::pair", ptr %40, i32 0, i32 1
  %42 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %37, ptr noundef nonnull align 4 dereferenceable(4) %41)
  br label %43

43:                                               ; preds = %32
  %44 = load i32, ptr %4, align 4, !tbaa !11
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %4, align 4, !tbaa !11
  br label %27, !llvm.loop !13

46:                                               ; preds = %31
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #7
  store i64 0, ptr %5, align 8, !tbaa !15
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #7
  %47 = call noundef double @_ZSt3powIiiEN9__gnu_cxx9__promoteIDTplcvNS1_IT_Xsr3std12__is_integerIS2_EE7__valueEE6__typeELi0EcvNS1_IT0_Xsr3std12__is_integerIS5_EE7__valueEE6__typeELi0EEXsr3std12__is_integerIS8_EE7__valueEE6__typeES2_S5_(i32 noundef 25000, i32 noundef 2)
  %48 = fmul double 2.000000e+00, %47
  %49 = fptosi double %48 to i64
  store i64 %49, ptr %6, align 8, !tbaa !15
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #7
  store i64 0, ptr %7, align 8, !tbaa !15
  br label %50

50:                                               ; preds = %72, %46
  %51 = load i64, ptr %5, align 8, !tbaa !15
  %52 = load i64, ptr %6, align 8, !tbaa !15
  %53 = icmp slt i64 %51, %52
  br i1 %53, label %54, label %73

54:                                               ; preds = %50
  %55 = load i64, ptr %5, align 8, !tbaa !15
  %56 = load i64, ptr %6, align 8, !tbaa !15
  %57 = add nsw i64 %55, %56
  %58 = sdiv i64 %57, 2
  store i64 %58, ptr %7, align 8, !tbaa !15
  call void @llvm.lifetime.start.p0(i64 1, ptr %8) #7
  %59 = load i32, ptr %2, align 4, !tbaa !11
  %60 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr %3, i64 0, i64 0
  %61 = load i64, ptr %7, align 8, !tbaa !15
  %62 = call noundef zeroext i1 @_Z5worksiPSt4pairIiiEx(i32 noundef %59, ptr noundef %60, i64 noundef %61)
  %63 = zext i1 %62 to i8
  store i8 %63, ptr %8, align 1, !tbaa !17
  %64 = load i8, ptr %8, align 1, !tbaa !17, !range !19, !noundef !20
  %65 = trunc i8 %64 to i1
  br i1 %65, label %66, label %69

66:                                               ; preds = %54
  %67 = load i64, ptr %7, align 8, !tbaa !15
  %68 = sub nsw i64 %67, 1
  store i64 %68, ptr %6, align 8, !tbaa !15
  br label %72

69:                                               ; preds = %54
  %70 = load i64, ptr %7, align 8, !tbaa !15
  %71 = add nsw i64 %70, 1
  store i64 %71, ptr %5, align 8, !tbaa !15
  br label %72

72:                                               ; preds = %69, %66
  call void @llvm.lifetime.end.p0(i64 1, ptr %8) #7
  br label %50, !llvm.loop !21

73:                                               ; preds = %50
  br label %74

74:                                               ; preds = %79, %73
  %75 = load i32, ptr %2, align 4, !tbaa !11
  %76 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr %3, i64 0, i64 0
  %77 = load i64, ptr %7, align 8, !tbaa !15
  %78 = call noundef zeroext i1 @_Z5worksiPSt4pairIiiEx(i32 noundef %75, ptr noundef %76, i64 noundef %77)
  br i1 %78, label %79, label %82

79:                                               ; preds = %74
  %80 = load i64, ptr %7, align 8, !tbaa !15
  %81 = add nsw i64 %80, -1
  store i64 %81, ptr %7, align 8, !tbaa !15
  br label %74, !llvm.loop !22

82:                                               ; preds = %74
  br label %83

83:                                               ; preds = %89, %82
  %84 = load i32, ptr %2, align 4, !tbaa !11
  %85 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr %3, i64 0, i64 0
  %86 = load i64, ptr %7, align 8, !tbaa !15
  %87 = call noundef zeroext i1 @_Z5worksiPSt4pairIiiEx(i32 noundef %84, ptr noundef %85, i64 noundef %86)
  %88 = xor i1 %87, true
  br i1 %88, label %89, label %92

89:                                               ; preds = %83
  %90 = load i64, ptr %7, align 8, !tbaa !15
  %91 = add nsw i64 %90, 1
  store i64 %91, ptr %7, align 8, !tbaa !15
  br label %83, !llvm.loop !23

92:                                               ; preds = %83
  %93 = load i64, ptr %7, align 8, !tbaa !15
  %94 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %93)
  %95 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %94, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #7
  call void @llvm.lifetime.end.p0(i64 8000, ptr %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  ret i32 0
}

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 @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXsr6__and_ISt37__is_implicitly_default_constructibleIT_ES3_IT0_EEE5valueEbE4typeELb1EEEv(ptr noundef nonnull align 4 dereferenceable(8)) unnamed_addr #5 align 2

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

; 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)) #6

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 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 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 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 = !{!16, !16, i64 0}
!16 = !{!"long long", !10, i64 0}
!17 = !{!18, !18, i64 0}
!18 = !{!"bool", !10, i64 0}
!19 = !{i8 0, i8 2}
!20 = !{}
!21 = distinct !{!21, !14}
!22 = distinct !{!22, !14}
!23 = distinct !{!23, !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" }
%"struct.std::pair" = type { i32, i32 }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str = external hidden unnamed_addr constant [11 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 [12 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 zeroext i1 @_Z5worksiPSt4pairIiiEx(i32 noundef, ptr noundef, i64 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 nounwind uwtable
declare dso_local noundef double @_ZSt3powIiiEN9__gnu_cxx9__promoteIDTplcvNS1_IT_Xsr3std12__is_integerIS2_EE7__valueEE6__typeELi0EcvNS1_IT0_Xsr3std12__is_integerIS5_EE7__valueEE6__typeELi0EEXsr3std12__is_integerIS8_EE7__valueEE6__typeES2_S5_(i32 noundef, i32 noundef) 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

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 {
  %1 = alloca i32, align 4
  %2 = alloca [1000 x %"struct.std::pair"], align 16
  %3 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %4 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %5 = getelementptr i8, ptr %4, i64 -24
  %6 = load i64, ptr %5, align 8
  %7 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %6
  %8 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %7, ptr noundef null)
  %9 = load ptr, ptr @stdin, align 8, !tbaa !8
  %10 = tail call ptr @freopen(ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, ptr noundef %9)
  %11 = load ptr, ptr @stdout, align 8, !tbaa !8
  %12 = tail call ptr @freopen(ptr noundef nonnull @.str.2, ptr noundef nonnull @.str.3, ptr noundef %11)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #7
  %13 = 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)
  call void @llvm.lifetime.start.p0(i64 8000, ptr nonnull %2) #7
  br label %14

14:                                               ; preds = %14, %0
  %.idx = phi i64 [ 0, %0 ], [ %.add, %14 ]
  %.ptr = getelementptr inbounds i8, ptr %2, i64 %.idx
  call void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXsr6__and_ISt37__is_implicitly_default_constructibleIT_ES3_IT0_EEE5valueEbE4typeELb1EEEv(ptr noundef nonnull align 4 dereferenceable(8) %.ptr)
  %.add = add nuw nsw i64 %.idx, 8
  %15 = icmp eq i64 %.add, 8000
  br i1 %15, label %.preheader24, label %14

.preheader24:                                     ; preds = %14
  %16 = load i32, ptr %1, align 4, !tbaa !11
  %17 = icmp sgt i32 %16, 0
  br i1 %17, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.preheader24
  %18 = call noundef double @_ZSt3powIiiEN9__gnu_cxx9__promoteIDTplcvNS1_IT_Xsr3std12__is_integerIS2_EE7__valueEE6__typeELi0EcvNS1_IT0_Xsr3std12__is_integerIS5_EE7__valueEE6__typeELi0EEXsr3std12__is_integerIS8_EE7__valueEE6__typeES2_S5_(i32 noundef 25000, i32 noundef 2)
  %19 = fmul double %18, 2.000000e+00
  %20 = fptosi double %19 to i64
  %21 = icmp sgt i64 %20, 0
  br i1 %21, label %.lr.ph29, label %.preheader23.preheader

.lr.ph:                                           ; preds = %.preheader24, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %.preheader24 ]
  %22 = getelementptr inbounds [1000 x %"struct.std::pair"], ptr %2, i64 0, i64 %indvars.iv
  %23 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %22)
  %24 = getelementptr inbounds i8, ptr %22, i64 4
  %25 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %23, ptr noundef nonnull align 4 dereferenceable(4) %24)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %26 = load i32, ptr %1, align 4, !tbaa !11
  %27 = sext i32 %26 to i64
  %28 = icmp slt i64 %indvars.iv.next, %27
  br i1 %28, label %.lr.ph, label %._crit_edge, !llvm.loop !13

.lr.ph29:                                         ; preds = %._crit_edge, %.lr.ph29
  %.01827 = phi i64 [ %.119, %.lr.ph29 ], [ %20, %._crit_edge ]
  %.02026 = phi i64 [ %.121, %.lr.ph29 ], [ 0, %._crit_edge ]
  %29 = add nuw nsw i64 %.01827, %.02026
  %30 = lshr i64 %29, 1
  %31 = load i32, ptr %1, align 4, !tbaa !11
  %32 = call noundef zeroext i1 @_Z5worksiPSt4pairIiiEx(i32 noundef %31, ptr noundef nonnull %2, i64 noundef %30)
  %33 = add nsw i64 %30, -1
  %34 = add nuw nsw i64 %30, 1
  %.121 = select i1 %32, i64 %.02026, i64 %34
  %.119 = select i1 %32, i64 %33, i64 %.01827
  %35 = icmp slt i64 %.121, %.119
  br i1 %35, label %.lr.ph29, label %.preheader23.preheader, !llvm.loop !15

.preheader23.preheader:                           ; preds = %.lr.ph29, %._crit_edge
  %.1.ph = phi i64 [ 0, %._crit_edge ], [ %30, %.lr.ph29 ]
  br label %.preheader23

.preheader23:                                     ; preds = %.preheader23.preheader, %.preheader23
  %.1 = phi i64 [ %38, %.preheader23 ], [ %.1.ph, %.preheader23.preheader ]
  %36 = load i32, ptr %1, align 4, !tbaa !11
  %37 = call noundef zeroext i1 @_Z5worksiPSt4pairIiiEx(i32 noundef %36, ptr noundef nonnull %2, i64 noundef %.1)
  %38 = add nsw i64 %.1, -1
  br i1 %37, label %.preheader23, label %.preheader, !llvm.loop !16

.preheader:                                       ; preds = %.preheader23, %.preheader
  %.2 = phi i64 [ %41, %.preheader ], [ %.1, %.preheader23 ]
  %39 = load i32, ptr %1, align 4, !tbaa !11
  %40 = call noundef zeroext i1 @_Z5worksiPSt4pairIiiEx(i32 noundef %39, ptr noundef nonnull %2, i64 noundef %.2)
  %41 = add nsw i64 %.2, 1
  br i1 %40, label %42, label %.preheader, !llvm.loop !17

42:                                               ; preds = %.preheader
  %43 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %.2)
  %44 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %43, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @llvm.lifetime.end.p0(i64 8000, ptr nonnull %2) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #7
  ret i32 0
}

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 @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXsr6__and_ISt37__is_implicitly_default_constructibleIT_ES3_IT0_EEE5valueEbE4typeELb1EEEv(ptr noundef nonnull align 4 dereferenceable(8)) unnamed_addr #5 align 2

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

; 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)) #6

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 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 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 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}
!17 = distinct !{!17, !14}


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