; LLVM IR from Shah-Shishir/Codeforces-Solutions :: 1136A. Nastya Is Reading a Book (main)

; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator" = type { i8 }
%"struct.std::pair" = type { i32, i32 }

@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; 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 i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca %"class.std::vector", align 8
  %9 = alloca %"class.std::allocator", align 1
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  br label %12

12:                                               ; preds = %81, %0
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  %14 = icmp ne i32 %13, -1
  br i1 %14, label %15, label %83

15:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 24, ptr %8) #5
  %16 = load i32, ptr %2, align 4, !tbaa !5
  %17 = add nsw i32 %16, 1
  %18 = sext i32 %17 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr %9) #5
  call void @_ZNSaISt4pairIiiEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %9) #5
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24) %8, i64 noundef %18, ptr noundef nonnull align 1 dereferenceable(1) %9)
          to label %19 unwind label %38

19:                                               ; preds = %15
  call void @_ZNSt15__new_allocatorISt4pairIiiEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %9) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %9) #5
  store i32 1, ptr %3, align 4, !tbaa !5
  br label %20

20:                                               ; preds = %35, %19
  %21 = load i32, ptr %3, align 4, !tbaa !5
  %22 = load i32, ptr %2, align 4, !tbaa !5
  %23 = icmp sle i32 %21, %22
  br i1 %23, label %24, label %46

24:                                               ; preds = %20
  %25 = load i32, ptr %3, align 4, !tbaa !5
  %26 = sext i32 %25 to i64
  %27 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %8, i64 noundef %26) #5
  %28 = getelementptr inbounds %"struct.std::pair", ptr %27, i32 0, i32 0
  %29 = load i32, ptr %3, align 4, !tbaa !5
  %30 = sext i32 %29 to i64
  %31 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %8, i64 noundef %30) #5
  %32 = getelementptr inbounds %"struct.std::pair", ptr %31, i32 0, i32 1
  %33 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %28, ptr noundef %32)
          to label %34 unwind label %42

34:                                               ; preds = %24
  br label %35

35:                                               ; preds = %34
  %36 = load i32, ptr %3, align 4, !tbaa !5
  %37 = add nsw i32 %36, 1
  store i32 %37, ptr %3, align 4, !tbaa !5
  br label %20, !llvm.loop !9

38:                                               ; preds = %15
  %39 = landingpad { ptr, i32 }
          cleanup
  %40 = extractvalue { ptr, i32 } %39, 0
  store ptr %40, ptr %10, align 8
  %41 = extractvalue { ptr, i32 } %39, 1
  store i32 %41, ptr %11, align 4
  call void @_ZNSt15__new_allocatorISt4pairIiiEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %9) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %9) #5
  br label %82

42:                                               ; preds = %76, %46, %24
  %43 = landingpad { ptr, i32 }
          cleanup
  %44 = extractvalue { ptr, i32 } %43, 0
  store ptr %44, ptr %10, align 8
  %45 = extractvalue { ptr, i32 } %43, 1
  store i32 %45, ptr %11, align 4
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %8) #5
  br label %82

46:                                               ; preds = %20
  %47 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %6)
          to label %48 unwind label %42

48:                                               ; preds = %46
  store i32 0, ptr %7, align 4, !tbaa !5
  store i32 1, ptr %3, align 4, !tbaa !5
  br label %49

49:                                               ; preds = %73, %48
  %50 = load i32, ptr %3, align 4, !tbaa !5
  %51 = load i32, ptr %2, align 4, !tbaa !5
  %52 = icmp sle i32 %50, %51
  br i1 %52, label %53, label %76

53:                                               ; preds = %49
  %54 = load i32, ptr %6, align 4, !tbaa !5
  %55 = load i32, ptr %3, align 4, !tbaa !5
  %56 = sext i32 %55 to i64
  %57 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %8, i64 noundef %56) #5
  %58 = getelementptr inbounds %"struct.std::pair", ptr %57, i32 0, i32 0
  %59 = load i32, ptr %58, align 4, !tbaa !11
  %60 = icmp sge i32 %54, %59
  br i1 %60, label %61, label %70

61:                                               ; preds = %53
  %62 = load i32, ptr %6, align 4, !tbaa !5
  %63 = load i32, ptr %3, align 4, !tbaa !5
  %64 = sext i32 %63 to i64
  %65 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %8, i64 noundef %64) #5
  %66 = getelementptr inbounds %"struct.std::pair", ptr %65, i32 0, i32 1
  %67 = load i32, ptr %66, align 4, !tbaa !13
  %68 = icmp sle i32 %62, %67
  br i1 %68, label %69, label %70

69:                                               ; preds = %61
  br label %76

70:                                               ; preds = %61, %53
  %71 = load i32, ptr %7, align 4, !tbaa !5
  %72 = add nsw i32 %71, 1
  store i32 %72, ptr %7, align 4, !tbaa !5
  br label %73

73:                                               ; preds = %70
  %74 = load i32, ptr %3, align 4, !tbaa !5
  %75 = add nsw i32 %74, 1
  store i32 %75, ptr %3, align 4, !tbaa !5
  br label %49, !llvm.loop !14

76:                                               ; preds = %69, %49
  %77 = load i32, ptr %2, align 4, !tbaa !5
  %78 = load i32, ptr %7, align 4, !tbaa !5
  %79 = sub nsw i32 %77, %78
  %80 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %79)
          to label %81 unwind label %42

81:                                               ; preds = %76
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) %8) #5
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %8) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr %8) #5
  br label %12, !llvm.loop !15

82:                                               ; preds = %42, %38
  call void @llvm.lifetime.end.p0(i64 24, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  br label %84

83:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  ret i32 0

84:                                               ; preds = %82
  %85 = load ptr, ptr %10, align 8
  %86 = load i32, ptr %11, align 4
  %87 = insertvalue { ptr, i32 } poison, ptr %85, 0
  %88 = insertvalue { ptr, i32 } %87, i32 %86, 1
  resume { ptr, i32 } %88
}

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

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaISt4pairIiiEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #4 align 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) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #3 align 2

declare i32 @printf(ptr noundef, ...) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorISt4pairIiiEED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 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 #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 = { 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, !6, i64 0}
!12 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!13 = !{!12, !6, i64 4}
!14 = distinct !{!14, !10}
!15 = distinct !{!15, !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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator" = type { i8 }

@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; 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 %"class.std::vector", align 8
  %4 = alloca %"class.std::allocator", align 1
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %.not26 = icmp eq i32 %5, -1
  br i1 %.not26, label %._crit_edge29, label %.lr.ph28

.lr.ph28:                                         ; preds = %0, %._crit_edge23
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %3) #5
  %6 = load i32, ptr %1, align 4, !tbaa !5
  %7 = add nsw i32 %6, 1
  %8 = sext i32 %7 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %4) #5
  call void @_ZNSaISt4pairIiiEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #5
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %8, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %9 unwind label %17

9:                                                ; preds = %.lr.ph28
  call void @_ZNSt15__new_allocatorISt4pairIiiEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #5
  %10 = load i32, ptr %1, align 4, !tbaa !5
  %.not1216 = icmp slt i32 %10, 1
  br i1 %.not1216, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %9, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 1, %9 ]
  %11 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %indvars.iv) #5
  %12 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %indvars.iv) #5
  %13 = getelementptr inbounds i8, ptr %12, i64 4
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %11, ptr noundef nonnull %13)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %15 = load i32, ptr %1, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %.not12.not = icmp slt i64 %indvars.iv, %16
  br i1 %.not12.not, label %.lr.ph, label %._crit_edge, !llvm.loop !9

17:                                               ; preds = %.lr.ph28
  %18 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorISt4pairIiiEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #5
  resume { ptr, i32 } %18

._crit_edge:                                      ; preds = %.lr.ph, %9
  %19 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  %20 = load i32, ptr %1, align 4, !tbaa !5
  %.not1318 = icmp slt i32 %20, 1
  br i1 %.not1318, label %._crit_edge23, label %.lr.ph22

.lr.ph22:                                         ; preds = %._crit_edge, %29
  %indvars.iv31 = phi i64 [ %indvars.iv.next32, %29 ], [ 1, %._crit_edge ]
  %.01119 = phi i32 [ %30, %29 ], [ 0, %._crit_edge ]
  %21 = load i32, ptr %2, align 4, !tbaa !5
  %22 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %indvars.iv31) #5
  %23 = load i32, ptr %22, align 4, !tbaa !11
  %.not14 = icmp slt i32 %21, %23
  br i1 %.not14, label %29, label %24

24:                                               ; preds = %.lr.ph22
  %25 = load i32, ptr %2, align 4, !tbaa !5
  %26 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %indvars.iv31) #5
  %27 = getelementptr inbounds i8, ptr %26, i64 4
  %28 = load i32, ptr %27, align 4, !tbaa !13
  %.not15 = icmp sgt i32 %25, %28
  br i1 %.not15, label %29, label %.._crit_edge23.loopexit_crit_edge

.._crit_edge23.loopexit_crit_edge:                ; preds = %24
  %.pre.pre = load i32, ptr %1, align 4, !tbaa !5
  br label %._crit_edge23

29:                                               ; preds = %24, %.lr.ph22
  %30 = add nuw nsw i32 %.01119, 1
  %indvars.iv.next32 = add nuw nsw i64 %indvars.iv31, 1
  %31 = load i32, ptr %1, align 4, !tbaa !5
  %32 = sext i32 %31 to i64
  %.not13.not = icmp slt i64 %indvars.iv31, %32
  br i1 %.not13.not, label %.lr.ph22, label %._crit_edge23, !llvm.loop !14

._crit_edge23:                                    ; preds = %29, %.._crit_edge23.loopexit_crit_edge, %._crit_edge
  %33 = phi i32 [ %20, %._crit_edge ], [ %.pre.pre, %.._crit_edge23.loopexit_crit_edge ], [ %31, %29 ]
  %.011.lcssa = phi i32 [ 0, %._crit_edge ], [ %.01119, %.._crit_edge23.loopexit_crit_edge ], [ %30, %29 ]
  %34 = sub nsw i32 %33, %.011.lcssa
  %35 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %34)
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #5
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #5
  %36 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %.not = icmp eq i32 %36, -1
  br i1 %.not, label %._crit_edge29, label %.lr.ph28, !llvm.loop !15

._crit_edge29:                                    ; preds = %._crit_edge23, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #5
  ret i32 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: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaISt4pairIiiEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #4 align 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) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #3 align 2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorISt4pairIiiEED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nofree nounwind "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 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 #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 = { 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, !6, i64 0}
!12 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!13 = !{!12, !6, i64 4}
!14 = distinct !{!14, !10}
!15 = distinct !{!15, !10}


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