; LLVM IR from tangjz/acm-icpc :: codeforces/complete (489E)

; 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::stack" = type { %"class.std::deque" }
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<int, std::allocator<int>>::_Deque_impl" }
%"struct.std::_Deque_base<int, std::allocator<int>>::_Deque_impl" = type { %"struct.std::_Deque_base<int, std::allocator<int>>::_Deque_impl_data" }
%"struct.std::_Deque_base<int, std::allocator<int>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }

@n = external dso_local global i32, align 4
@l = external dso_local global i32, align 4
@x = external dso_local global [1010 x i32], align 16
@b = external dso_local global [1010 x i32], align 16
@p = external dso_local global [1010 x i32], align 16
@L = external dso_local global double, align 8
@R = external dso_local global double, align 8
@M = external dso_local global double, align 8
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z5judgev() #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 norecurse uwtable
define dso_local noundef i32 @main() #2 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca %"class.std::stack", align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n, ptr noundef @l)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #7
  store i32 1, ptr %2, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %21, %0
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %10 = load i32, ptr @n, align 4, !tbaa !5
  %11 = icmp sle i32 %9, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  br label %24

13:                                               ; preds = %8
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds i32, ptr @x, i64 %15
  %17 = load i32, ptr %2, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds i32, ptr @b, i64 %18
  %20 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %16, ptr noundef %19)
  br label %21

21:                                               ; preds = %13
  %22 = load i32, ptr %2, align 4, !tbaa !5
  %23 = add nsw i32 %22, 1
  store i32 %23, ptr %2, align 4, !tbaa !5
  br label %8, !llvm.loop !9

24:                                               ; preds = %12
  store double 1.000000e+00, ptr @M, align 8, !tbaa !11
  br label %25

25:                                               ; preds = %28, %24
  %26 = call noundef zeroext i1 @_Z5judgev()
  br i1 %26, label %27, label %31

27:                                               ; preds = %25
  br label %28

28:                                               ; preds = %27
  %29 = load double, ptr @M, align 8, !tbaa !11
  %30 = fmul double %29, 2.000000e+00
  store double %30, ptr @M, align 8, !tbaa !11
  br label %25, !llvm.loop !13

31:                                               ; preds = %25
  %32 = load double, ptr @M, align 8, !tbaa !11
  %33 = fptosi double %32 to i32
  %34 = sdiv i32 %33, 2
  %35 = sitofp i32 %34 to double
  store double %35, ptr @L, align 8, !tbaa !11
  %36 = load double, ptr @M, align 8, !tbaa !11
  store double %36, ptr @R, align 8, !tbaa !11
  br label %37

37:                                               ; preds = %52, %31
  %38 = load double, ptr @R, align 8, !tbaa !11
  %39 = load double, ptr @L, align 8, !tbaa !11
  %40 = fsub double %38, %39
  %41 = fcmp oge double %40, 1.000000e-10
  br i1 %41, label %42, label %53

42:                                               ; preds = %37
  %43 = load double, ptr @L, align 8, !tbaa !11
  %44 = load double, ptr @R, align 8, !tbaa !11
  %45 = fadd double %43, %44
  %46 = fdiv double %45, 2.000000e+00
  store double %46, ptr @M, align 8, !tbaa !11
  %47 = call noundef zeroext i1 @_Z5judgev()
  br i1 %47, label %48, label %50

48:                                               ; preds = %42
  %49 = load double, ptr @M, align 8, !tbaa !11
  store double %49, ptr @L, align 8, !tbaa !11
  br label %52

50:                                               ; preds = %42
  %51 = load double, ptr @M, align 8, !tbaa !11
  store double %51, ptr @R, align 8, !tbaa !11
  br label %52

52:                                               ; preds = %50, %48
  br label %37, !llvm.loop !14

53:                                               ; preds = %37
  call void @llvm.lifetime.start.p0(i64 80, ptr %3) #7
  call void @_ZNSt5stackIiSt5dequeIiSaIiEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #7
  %54 = load i32, ptr @n, align 4, !tbaa !5
  store i32 %54, ptr %4, align 4, !tbaa !5
  br label %55

55:                                               ; preds = %61, %53
  %56 = load i32, ptr %4, align 4, !tbaa !5
  %57 = icmp ne i32 %56, 0
  br i1 %57, label %59, label %58

58:                                               ; preds = %55
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #7
  br label %70

59:                                               ; preds = %55
  invoke void @_ZNSt5stackIiSt5dequeIiSaIiEEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(80) %3, ptr noundef nonnull align 4 dereferenceable(4) %4)
          to label %60 unwind label %66

60:                                               ; preds = %59
  br label %61

61:                                               ; preds = %60
  %62 = load i32, ptr %4, align 4, !tbaa !5
  %63 = sext i32 %62 to i64
  %64 = getelementptr inbounds [1010 x i32], ptr @p, i64 0, i64 %63
  %65 = load i32, ptr %64, align 4, !tbaa !5
  store i32 %65, ptr %4, align 4, !tbaa !5
  br label %55, !llvm.loop !15

66:                                               ; preds = %59
  %67 = landingpad { ptr, i32 }
          cleanup
  %68 = extractvalue { ptr, i32 } %67, 0
  store ptr %68, ptr %5, align 8
  %69 = extractvalue { ptr, i32 } %67, 1
  store i32 %69, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #7
  br label %90

70:                                               ; preds = %58
  br label %71

71:                                               ; preds = %81, %70
  %72 = invoke noundef zeroext i1 @_ZNKSt5stackIiSt5dequeIiSaIiEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
          to label %73 unwind label %82

73:                                               ; preds = %71
  %74 = xor i1 %72, true
  br i1 %74, label %75, label %86

75:                                               ; preds = %73
  %76 = invoke noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5stackIiSt5dequeIiSaIiEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
          to label %77 unwind label %82

77:                                               ; preds = %75
  %78 = load i32, ptr %76, align 4, !tbaa !5
  %79 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %78)
          to label %80 unwind label %82

80:                                               ; preds = %77
  invoke void @_ZNSt5stackIiSt5dequeIiSaIiEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
          to label %81 unwind label %82

81:                                               ; preds = %80
  br label %71, !llvm.loop !16

82:                                               ; preds = %86, %80, %77, %75, %71
  %83 = landingpad { ptr, i32 }
          cleanup
  %84 = extractvalue { ptr, i32 } %83, 0
  store ptr %84, ptr %5, align 8
  %85 = extractvalue { ptr, i32 } %83, 1
  store i32 %85, ptr %6, align 4
  br label %90

86:                                               ; preds = %73
  %87 = invoke i32 @putchar(i32 noundef 10)
          to label %88 unwind label %82

88:                                               ; preds = %86
  store i32 0, ptr %1, align 4
  call void @_ZNSt5stackIiSt5dequeIiSaIiEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %3) #7
  call void @llvm.lifetime.end.p0(i64 80, ptr %3) #7
  %89 = load i32, ptr %1, align 4
  ret i32 %89

90:                                               ; preds = %82, %66
  call void @_ZNSt5stackIiSt5dequeIiSaIiEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %3) #7
  call void @llvm.lifetime.end.p0(i64 80, ptr %3) #7
  br label %91

91:                                               ; preds = %90
  %92 = load ptr, ptr %5, align 8
  %93 = load i32, ptr %6, align 4
  %94 = insertvalue { ptr, i32 } poison, ptr %92, 0
  %95 = insertvalue { ptr, i32 } %94, i32 %93, 1
  resume { ptr, i32 } %95
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #3

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIiSt5dequeIiSaIiEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIiSt5dequeIiSaIiEEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 4 dereferenceable(4)) #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt5stackIiSt5dequeIiSaIiEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80)) #4 align 2

declare i32 @printf(ptr noundef, ...) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5stackIiSt5dequeIiSaIiEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80)) #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIiSt5dequeIiSaIiEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) #4 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare i32 @putchar(i32 noundef) #5

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIiSt5dequeIiSaIiEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #6 align 2

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 = { 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 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 #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 = !{!12, !12, i64 0}
!12 = !{!"double", !7, i64 0}
!13 = distinct !{!13, !10}
!14 = distinct !{!14, !10}
!15 = distinct !{!15, !10}
!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::stack" = type { %"class.std::deque" }
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<int, std::allocator<int>>::_Deque_impl" }
%"struct.std::_Deque_base<int, std::allocator<int>>::_Deque_impl" = type { %"struct.std::_Deque_base<int, std::allocator<int>>::_Deque_impl_data" }
%"struct.std::_Deque_base<int, std::allocator<int>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }

@n = external dso_local global i32, align 4
@l = external dso_local global i32, align 4
@x = external dso_local global [1010 x i32], align 16
@b = external dso_local global [1010 x i32], align 16
@p = external dso_local local_unnamed_addr global [1010 x i32], align 16
@L = external dso_local local_unnamed_addr global double, align 8
@R = external dso_local local_unnamed_addr global double, align 8
@M = external dso_local local_unnamed_addr global double, align 8
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z5judgev() 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 norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #2 personality ptr @__gxx_personality_v0 {
  %1 = alloca %"class.std::stack", align 8
  %2 = alloca i32, align 4
  %3 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n, ptr noundef nonnull @l)
  %4 = load i32, ptr @n, align 4, !tbaa !5
  %.not8 = icmp slt i32 %4, 1
  br i1 %.not8, label %.preheader, label %.lr.ph

.preheader:                                       ; preds = %.lr.ph, %0
  store double 1.000000e+00, ptr @M, align 8, !tbaa !9
  %5 = tail call noundef zeroext i1 @_Z5judgev()
  br i1 %5, label %.lr.ph10, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 1, %0 ]
  %6 = getelementptr inbounds i32, ptr @x, i64 %indvars.iv
  %7 = getelementptr inbounds i32, ptr @b, i64 %indvars.iv
  %8 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %6, ptr noundef nonnull %7)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %9 = load i32, ptr @n, align 4, !tbaa !5
  %10 = sext i32 %9 to i64
  %.not.not = icmp slt i64 %indvars.iv, %10
  br i1 %.not.not, label %.lr.ph, label %.preheader, !llvm.loop !11

.lr.ph10:                                         ; preds = %.preheader, %.lr.ph10
  %11 = load double, ptr @M, align 8, !tbaa !9
  %12 = fmul double %11, 2.000000e+00
  store double %12, ptr @M, align 8, !tbaa !9
  %13 = tail call noundef zeroext i1 @_Z5judgev()
  br i1 %13, label %.lr.ph10, label %._crit_edge, !llvm.loop !13

._crit_edge:                                      ; preds = %.lr.ph10, %.preheader
  %14 = load double, ptr @M, align 8, !tbaa !9
  %15 = fptosi double %14 to i32
  %16 = sdiv i32 %15, 2
  %17 = sitofp i32 %16 to double
  store double %17, ptr @L, align 8, !tbaa !9
  store double %14, ptr @R, align 8, !tbaa !9
  %18 = fsub double %14, %17
  %19 = fcmp ult double %18, 1.000000e-10
  br i1 %19, label %._crit_edge13, label %.lr.ph12

.lr.ph12:                                         ; preds = %._crit_edge, %28
  %20 = phi double [ %29, %28 ], [ %17, %._crit_edge ]
  %21 = phi double [ %30, %28 ], [ %14, %._crit_edge ]
  %22 = fadd double %21, %20
  %23 = fmul double %22, 5.000000e-01
  store double %23, ptr @M, align 8, !tbaa !9
  %24 = tail call noundef zeroext i1 @_Z5judgev()
  %25 = load double, ptr @M, align 8, !tbaa !9
  br i1 %24, label %26, label %27

26:                                               ; preds = %.lr.ph12
  store double %25, ptr @L, align 8, !tbaa !9
  %.pre = load double, ptr @R, align 8, !tbaa !9
  br label %28

27:                                               ; preds = %.lr.ph12
  store double %25, ptr @R, align 8, !tbaa !9
  %.pre23 = load double, ptr @L, align 8, !tbaa !9
  br label %28

28:                                               ; preds = %27, %26
  %29 = phi double [ %.pre23, %27 ], [ %25, %26 ]
  %30 = phi double [ %25, %27 ], [ %.pre, %26 ]
  %31 = fsub double %30, %29
  %32 = fcmp ult double %31, 1.000000e-10
  br i1 %32, label %._crit_edge13, label %.lr.ph12, !llvm.loop !14

._crit_edge13:                                    ; preds = %28, %._crit_edge
  call void @llvm.lifetime.start.p0(i64 80, ptr nonnull %1) #7
  call void @_ZNSt5stackIiSt5dequeIiSaIiEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80) %1)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #7
  %storemerge614 = load i32, ptr @n, align 4, !tbaa !5
  store i32 %storemerge614, ptr %2, align 4, !tbaa !5
  %.not715 = icmp eq i32 %storemerge614, 0
  br i1 %.not715, label %._crit_edge18, label %.lr.ph17

._crit_edge18:                                    ; preds = %34, %._crit_edge13
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  %33 = call noundef zeroext i1 @_ZNKSt5stackIiSt5dequeIiSaIiEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %1)
  br i1 %33, label %._crit_edge21, label %.lr.ph20

.lr.ph17:                                         ; preds = %._crit_edge13, %34
  invoke void @_ZNSt5stackIiSt5dequeIiSaIiEEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(80) %1, ptr noundef nonnull align 4 dereferenceable(4) %2)
          to label %34 unwind label %38

34:                                               ; preds = %.lr.ph17
  %35 = load i32, ptr %2, align 4, !tbaa !5
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds [1010 x i32], ptr @p, i64 0, i64 %36
  %storemerge6 = load i32, ptr %37, align 4, !tbaa !5
  store i32 %storemerge6, ptr %2, align 4, !tbaa !5
  %.not7 = icmp eq i32 %storemerge6, 0
  br i1 %.not7, label %._crit_edge18, label %.lr.ph17, !llvm.loop !15

38:                                               ; preds = %.lr.ph17
  %39 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  call void @_ZNSt5stackIiSt5dequeIiSaIiEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %1) #7
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %1) #7
  resume { ptr, i32 } %39

.lr.ph20:                                         ; preds = %._crit_edge18, %.lr.ph20
  %40 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5stackIiSt5dequeIiSaIiEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %1)
  %41 = load i32, ptr %40, align 4, !tbaa !5
  %42 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %41)
  call void @_ZNSt5stackIiSt5dequeIiSaIiEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %1)
  %43 = call noundef zeroext i1 @_ZNKSt5stackIiSt5dequeIiSaIiEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %1)
  br i1 %43, label %._crit_edge21, label %.lr.ph20, !llvm.loop !16

._crit_edge21:                                    ; preds = %.lr.ph20, %._crit_edge18
  %44 = call i32 @putchar(i32 noundef 10)
  call void @_ZNSt5stackIiSt5dequeIiSaIiEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %1) #7
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %1) #7
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIiSt5dequeIiSaIiEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIiSt5dequeIiSaIiEEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt5stackIiSt5dequeIiSaIiEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #4 align 2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5stackIiSt5dequeIiSaIiEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIiSt5dequeIiSaIiEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #4 align 2

; Function Attrs: inlinehint mustprogress nofree nounwind uwtable
declare noundef i32 @putchar(i32 noundef) local_unnamed_addr #5

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIiSt5dequeIiSaIiEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #6 align 2

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 = { 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 = { 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 #4 = { 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 #5 = { inlinehint mustprogress nofree 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 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 = !{!10, !10, i64 0}
!10 = !{!"double", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !12}
!15 = distinct !{!15, !12}
!16 = distinct !{!16, !12}


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