; LLVM IR from kazunetakahashi/atcoder :: 201411_201509/1221_ARC031 (C)

; 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 }

@N = external dso_local global i32, align 4
@bit = external dso_local global [100010 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 dso_local void @_Z3addii(i32 noundef, i32 noundef) #0

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

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z3sumi(i32 noundef) #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #2 {
  %1 = alloca i32, align 4
  %2 = alloca [100010 x %"struct.std::pair"], align 16
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca %"struct.std::pair", align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i64, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %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) @N)
  call void @llvm.lifetime.start.p0(i64 800080, ptr %2) #7
  %14 = getelementptr inbounds [100010 x %"struct.std::pair"], ptr %2, i32 0, i32 0
  %15 = getelementptr inbounds %"struct.std::pair", ptr %14, i64 100010
  br label %16

16:                                               ; preds = %16, %0
  %17 = phi ptr [ %14, %0 ], [ %18, %16 ]
  call void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXsr6__and_ISt37__is_implicitly_default_constructibleIT_ES3_IT0_EEE5valueEbE4typeELb1EEEv(ptr noundef nonnull align 4 dereferenceable(8) %17)
  %18 = getelementptr inbounds %"struct.std::pair", ptr %17, i64 1
  %19 = icmp eq ptr %18, %15
  br i1 %19, label %20, label %16

20:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #7
  store i32 1, ptr %3, align 4, !tbaa !5
  br label %21

21:                                               ; preds = %33, %20
  %22 = load i32, ptr %3, align 4, !tbaa !5
  %23 = load i32, ptr @N, align 4, !tbaa !5
  %24 = icmp sle i32 %22, %23
  br i1 %24, label %26, label %25

25:                                               ; preds = %21
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #7
  br label %36

26:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #7
  %27 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %4)
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #7
  %28 = call i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) %4, ptr noundef nonnull align 4 dereferenceable(4) %3)
  store i64 %28, ptr %5, align 4
  %29 = load i32, ptr %3, align 4, !tbaa !5
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds [100010 x %"struct.std::pair"], ptr %2, i64 0, i64 %30
  %32 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt4pairIiiEaSEOS0_(ptr noundef nonnull align 4 dereferenceable(8) %31, ptr noundef nonnull align 4 dereferenceable(8) %5) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #7
  br label %33

33:                                               ; preds = %26
  %34 = load i32, ptr %3, align 4, !tbaa !5
  %35 = add nsw i32 %34, 1
  store i32 %35, ptr %3, align 4, !tbaa !5
  br label %21, !llvm.loop !9

36:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #7
  store i32 0, ptr %6, align 4, !tbaa !5
  call void @_ZSt4fillIPiiEvT_S1_RKT0_(ptr noundef @bit, ptr noundef getelementptr inbounds (i32, ptr @bit, i64 100010), ptr noundef nonnull align 4 dereferenceable(4) %6)
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #7
  store i32 1, ptr %7, align 4, !tbaa !5
  br label %37

37:                                               ; preds = %44, %36
  %38 = load i32, ptr %7, align 4, !tbaa !5
  %39 = load i32, ptr @N, align 4, !tbaa !5
  %40 = icmp sle i32 %38, %39
  br i1 %40, label %42, label %41

41:                                               ; preds = %37
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #7
  br label %47

42:                                               ; preds = %37
  %43 = load i32, ptr %7, align 4, !tbaa !5
  call void @_Z3addii(i32 noundef %43, i32 noundef 1)
  br label %44

44:                                               ; preds = %42
  %45 = load i32, ptr %7, align 4, !tbaa !5
  %46 = add nsw i32 %45, 1
  store i32 %46, ptr %7, align 4, !tbaa !5
  br label %37, !llvm.loop !11

47:                                               ; preds = %41
  %48 = getelementptr inbounds [100010 x %"struct.std::pair"], ptr %2, i64 0, i64 0
  %49 = getelementptr inbounds %"struct.std::pair", ptr %48, i64 1
  %50 = getelementptr inbounds [100010 x %"struct.std::pair"], ptr %2, i64 0, i64 0
  %51 = getelementptr inbounds %"struct.std::pair", ptr %50, i64 1
  %52 = load i32, ptr @N, align 4, !tbaa !5
  %53 = sext i32 %52 to i64
  %54 = getelementptr inbounds %"struct.std::pair", ptr %51, i64 %53
  call void @_ZSt4sortIPSt4pairIiiEEvT_S3_(ptr noundef %49, ptr noundef %54)
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #7
  store i64 0, ptr %8, align 8, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #7
  store i32 1, ptr %9, align 4, !tbaa !5
  br label %55

55:                                               ; preds = %80, %47
  %56 = load i32, ptr %9, align 4, !tbaa !5
  %57 = load i32, ptr @N, align 4, !tbaa !5
  %58 = icmp sle i32 %56, %57
  br i1 %58, label %60, label %59

59:                                               ; preds = %55
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #7
  br label %83

60:                                               ; preds = %55
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #7
  %61 = load i32, ptr %9, align 4, !tbaa !5
  %62 = sext i32 %61 to i64
  %63 = getelementptr inbounds [100010 x %"struct.std::pair"], ptr %2, i64 0, i64 %62
  %64 = getelementptr inbounds %"struct.std::pair", ptr %63, i32 0, i32 1
  %65 = load i32, ptr %64, align 4, !tbaa !14
  store i32 %65, ptr %10, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #7
  %66 = load i32, ptr %10, align 4, !tbaa !5
  %67 = sub nsw i32 %66, 1
  %68 = call noundef i32 @_Z3sumi(i32 noundef %67)
  store i32 %68, ptr %11, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #7
  %69 = load i32, ptr @N, align 4, !tbaa !5
  %70 = call noundef i32 @_Z3sumi(i32 noundef %69)
  %71 = load i32, ptr %11, align 4, !tbaa !5
  %72 = sub nsw i32 %70, %71
  %73 = sub nsw i32 %72, 1
  store i32 %73, ptr %12, align 4, !tbaa !5
  %74 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %11, ptr noundef nonnull align 4 dereferenceable(4) %12)
  %75 = load i32, ptr %74, align 4, !tbaa !5
  %76 = sext i32 %75 to i64
  %77 = load i64, ptr %8, align 8, !tbaa !12
  %78 = add nsw i64 %77, %76
  store i64 %78, ptr %8, align 8, !tbaa !12
  %79 = load i32, ptr %10, align 4, !tbaa !5
  call void @_Z3addii(i32 noundef %79, i32 noundef -1)
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #7
  br label %80

80:                                               ; preds = %60
  %81 = load i32, ptr %9, align 4, !tbaa !5
  %82 = add nsw i32 %81, 1
  store i32 %82, ptr %9, align 4, !tbaa !5
  br label %55, !llvm.loop !16

83:                                               ; preds = %59
  %84 = load i64, ptr %8, align 8, !tbaa !12
  %85 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %84)
  %86 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %85, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #7
  call void @llvm.lifetime.end.p0(i64 800080, ptr %2) #7
  %87 = load i32, ptr %1, align 4
  ret i32 %87
}

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #3

; 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 #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt4pairIiiEaSEOS0_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(8)) #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4fillIPiiEvT_S1_RKT0_(ptr noundef, ptr noundef, ptr noundef nonnull align 4 dereferenceable(4)) #5

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIPSt4pairIiiEEvT_S3_(ptr noundef, ptr noundef) #5

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

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #4 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) #4 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { 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 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #7 = { nounwind }

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

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = !{!13, !13, i64 0}
!13 = !{!"long long", !7, i64 0}
!14 = !{!15, !6, i64 4}
!15 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!16 = distinct !{!16, !10}


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

%"class.std::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 }

@N = external dso_local global i32, align 4
@bit = external dso_local global [100010 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 dso_local void @_Z3addii(i32 noundef, i32 noundef) local_unnamed_addr #0

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

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z3sumi(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #2 {
  %1 = alloca [100010 x %"struct.std::pair"], align 16
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca %"struct.std::pair", align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = 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)
  call void @llvm.lifetime.start.p0(i64 800080, ptr nonnull %1) #7
  br label %9

9:                                                ; preds = %9, %0
  %.idx = phi i64 [ 0, %0 ], [ %.add, %9 ]
  %.ptr = getelementptr inbounds i8, ptr %1, 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
  %10 = icmp eq i64 %.add, 800080
  br i1 %10, label %11, label %9

11:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #7
  store i32 1, ptr %2, align 4, !tbaa !5
  %12 = load i32, ptr @N, align 4, !tbaa !5
  %.not17 = icmp slt i32 %12, 1
  br i1 %.not17, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %11
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #7
  store i32 0, ptr %5, align 4, !tbaa !5
  call void @_ZSt4fillIPiiEvT_S1_RKT0_(ptr noundef nonnull @bit, ptr noundef nonnull getelementptr inbounds (i8, ptr @bit, i64 400040), ptr noundef nonnull align 4 dereferenceable(4) %5)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #7
  %13 = load i32, ptr @N, align 4, !tbaa !5
  %.not1518 = icmp slt i32 %13, 1
  br i1 %.not1518, label %._crit_edge22, label %.lr.ph21

.lr.ph:                                           ; preds = %11, %.lr.ph
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #7
  %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) %3)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #7
  %15 = call i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) %3, ptr noundef nonnull align 4 dereferenceable(4) %2)
  store i64 %15, ptr %4, align 8
  %16 = load i32, ptr %2, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [100010 x %"struct.std::pair"], ptr %1, i64 0, i64 %17
  %19 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt4pairIiiEaSEOS0_(ptr noundef nonnull align 4 dereferenceable(8) %18, ptr noundef nonnull align 4 dereferenceable(8) %4) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #7
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = add nsw i32 %20, 1
  store i32 %21, ptr %2, align 4, !tbaa !5
  %22 = load i32, ptr @N, align 4, !tbaa !5
  %.not.not = icmp slt i32 %20, %22
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge22:                                    ; preds = %.lr.ph21, %._crit_edge
  %.lcssa = phi i32 [ %13, %._crit_edge ], [ %28, %.lr.ph21 ]
  %23 = getelementptr inbounds i8, ptr %1, i64 8
  %24 = sext i32 %.lcssa to i64
  %25 = getelementptr inbounds %"struct.std::pair", ptr %23, i64 %24
  call void @_ZSt4sortIPSt4pairIiiEEvT_S3_(ptr noundef nonnull %23, ptr noundef nonnull %25)
  %26 = load i32, ptr @N, align 4, !tbaa !5
  %.not1623 = icmp slt i32 %26, 1
  br i1 %.not1623, label %._crit_edge28, label %.lr.ph27

.lr.ph21:                                         ; preds = %._crit_edge, %.lr.ph21
  %.019 = phi i32 [ %27, %.lr.ph21 ], [ 1, %._crit_edge ]
  call void @_Z3addii(i32 noundef %.019, i32 noundef 1)
  %27 = add nuw nsw i32 %.019, 1
  %28 = load i32, ptr @N, align 4, !tbaa !5
  %.not15.not = icmp slt i32 %.019, %28
  br i1 %.not15.not, label %.lr.ph21, label %._crit_edge22, !llvm.loop !11

._crit_edge28:                                    ; preds = %.lr.ph27, %._crit_edge22
  %.012.lcssa = phi i64 [ 0, %._crit_edge22 ], [ %43, %.lr.ph27 ]
  %29 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %.012.lcssa)
  %30 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %29, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @llvm.lifetime.end.p0(i64 800080, ptr nonnull %1) #7
  ret i32 0

.lr.ph27:                                         ; preds = %._crit_edge22, %.lr.ph27
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph27 ], [ 1, %._crit_edge22 ]
  %.01224 = phi i64 [ %43, %.lr.ph27 ], [ 0, %._crit_edge22 ]
  %31 = getelementptr inbounds [100010 x %"struct.std::pair"], ptr %1, i64 0, i64 %indvars.iv, i32 1
  %32 = load i32, ptr %31, align 4, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #7
  %33 = add nsw i32 %32, -1
  %34 = call noundef i32 @_Z3sumi(i32 noundef %33)
  store i32 %34, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %7) #7
  %35 = load i32, ptr @N, align 4, !tbaa !5
  %36 = call noundef i32 @_Z3sumi(i32 noundef %35)
  %37 = load i32, ptr %6, align 4, !tbaa !5
  %38 = xor i32 %37, -1
  %39 = add i32 %36, %38
  store i32 %39, ptr %7, align 4, !tbaa !5
  %40 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 4 dereferenceable(4) %7)
  %41 = load i32, ptr %40, align 4, !tbaa !5
  %42 = sext i32 %41 to i64
  %43 = add nsw i64 %.01224, %42
  call void @_Z3addii(i32 noundef %32, i32 noundef -1)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #7
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %44 = load i32, ptr @N, align 4, !tbaa !5
  %45 = sext i32 %44 to i64
  %.not16.not = icmp slt i64 %indvars.iv, %45
  br i1 %.not16.not, label %.lr.ph27, label %._crit_edge28, !llvm.loop !14
}

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 #3

; 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 #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt4pairIiiEaSEOS0_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4fillIPiiEvT_S1_RKT0_(ptr noundef, ptr noundef, ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #5

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIPSt4pairIiiEEvT_S3_(ptr noundef, ptr noundef) local_unnamed_addr #5

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

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

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

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = !{!13, !6, i64 4}
!13 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!14 = distinct !{!14, !10}


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