; LLVM IR from VastoLorde95/Competitive-Programming :: CodeChef/IPC/IPC15FLA/TREE02 (B)

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

@n = external dso_local global i32, align 4
@k = external dso_local global i32, align 4
@w = external dso_local global [20100 x i32], align 16
@g = external dso_local global [20100 x %"class.std::vector"], align 16
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #1 {
  %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 i64, align 8
  %8 = alloca i64, align 8
  %9 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  %10 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n, ptr noundef @k)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  store i32 0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  store i32 1, ptr %3, align 4, !tbaa !5
  br label %11

11:                                               ; preds = %26, %0
  %12 = load i32, ptr %3, align 4, !tbaa !5
  %13 = load i32, ptr @n, align 4, !tbaa !5
  %14 = icmp sle i32 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  br label %29

16:                                               ; preds = %11
  %17 = load i32, ptr %3, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [20100 x i32], ptr @w, i64 0, i64 %18
  %20 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.2, ptr noundef %19)
  %21 = load i32, ptr %3, align 4, !tbaa !5
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds [20100 x i32], ptr @w, i64 0, i64 %22
  %24 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %2, ptr noundef nonnull align 4 dereferenceable(4) %23)
  %25 = load i32, ptr %24, align 4, !tbaa !5
  store i32 %25, ptr %2, align 4, !tbaa !5
  br label %26

26:                                               ; preds = %16
  %27 = load i32, ptr %3, align 4, !tbaa !5
  %28 = add nsw i32 %27, 1
  store i32 %28, ptr %3, align 4, !tbaa !5
  br label %11, !llvm.loop !9

29:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  store i32 1, ptr %4, align 4, !tbaa !5
  br label %30

30:                                               ; preds = %43, %29
  %31 = load i32, ptr %4, align 4, !tbaa !5
  %32 = load i32, ptr @n, align 4, !tbaa !5
  %33 = icmp slt i32 %31, %32
  br i1 %33, label %35, label %34

34:                                               ; preds = %30
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  br label %46

35:                                               ; preds = %30
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #6
  %36 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %5, ptr noundef %6)
  %37 = load i32, ptr %5, align 4, !tbaa !5
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds [20100 x %"class.std::vector"], ptr @g, i64 0, i64 %38
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %39, ptr noundef nonnull align 4 dereferenceable(4) %6)
  %40 = load i32, ptr %6, align 4, !tbaa !5
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds [20100 x %"class.std::vector"], ptr @g, i64 0, i64 %41
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %42, ptr noundef nonnull align 4 dereferenceable(4) %5)
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  br label %43

43:                                               ; preds = %35
  %44 = load i32, ptr %4, align 4, !tbaa !5
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %4, align 4, !tbaa !5
  br label %30, !llvm.loop !11

46:                                               ; preds = %34
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #6
  %47 = load i32, ptr %2, align 4, !tbaa !5
  %48 = sub nsw i32 %47, 1
  %49 = sext i32 %48 to i64
  store i64 %49, ptr %7, align 8, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #6
  %50 = load i32, ptr @n, align 4, !tbaa !5
  %51 = sext i32 %50 to i64
  %52 = mul nsw i64 1, %51
  %53 = load i32, ptr %2, align 4, !tbaa !5
  %54 = sext i32 %53 to i64
  %55 = mul nsw i64 %52, %54
  store i64 %55, ptr %8, align 8, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #6
  br label %56

56:                                               ; preds = %72, %46
  %57 = load i64, ptr %7, align 8, !tbaa !12
  %58 = add nsw i64 %57, 1
  %59 = load i64, ptr %8, align 8, !tbaa !12
  %60 = icmp slt i64 %58, %59
  br i1 %60, label %61, label %73

61:                                               ; preds = %56
  %62 = load i64, ptr %7, align 8, !tbaa !12
  %63 = load i64, ptr %8, align 8, !tbaa !12
  %64 = add nsw i64 %62, %63
  %65 = ashr i64 %64, 1
  store i64 %65, ptr %9, align 8, !tbaa !12
  %66 = load i64, ptr %9, align 8, !tbaa !12
  %67 = call noundef zeroext i1 @_Z1fx(i64 noundef %66)
  br i1 %67, label %68, label %70

68:                                               ; preds = %61
  %69 = load i64, ptr %9, align 8, !tbaa !12
  store i64 %69, ptr %8, align 8, !tbaa !12
  br label %72

70:                                               ; preds = %61
  %71 = load i64, ptr %9, align 8, !tbaa !12
  store i64 %71, ptr %7, align 8, !tbaa !12
  br label %72

72:                                               ; preds = %70, %68
  br label %56, !llvm.loop !14

73:                                               ; preds = %56
  %74 = load i64, ptr %8, align 8, !tbaa !12
  %75 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i64 noundef %74)
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  ret i32 0
}

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #3

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) #4 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z1fx(i64 noundef) #5

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

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = { 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 #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 = { 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 = distinct !{!14, !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<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@n = external dso_local global i32, align 4
@k = external dso_local global i32, align 4
@w = external dso_local global [20100 x i32], align 16
@g = external dso_local global [20100 x %"class.std::vector"], align 16
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #1 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n, ptr noundef nonnull @k)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  store i32 0, ptr %1, align 4, !tbaa !5
  %5 = load i32, ptr @n, align 4, !tbaa !5
  %.not19 = icmp slt i32 %5, 1
  br i1 %.not19, label %._crit_edge, label %.lr.ph

.preheader:                                       ; preds = %.lr.ph
  %6 = icmp sgt i32 %11, 1
  br i1 %6, label %.lr.ph22, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 1, %0 ]
  %7 = getelementptr inbounds [20100 x i32], ptr @w, i64 0, i64 %indvars.iv
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.2, ptr noundef nonnull %7)
  %9 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %1, ptr noundef nonnull align 4 dereferenceable(4) %7)
  %10 = load i32, ptr %9, align 4, !tbaa !5
  store i32 %10, ptr %1, align 4, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %11 = load i32, ptr @n, align 4, !tbaa !5
  %12 = sext i32 %11 to i64
  %.not.not = icmp slt i64 %indvars.iv, %12
  br i1 %.not.not, label %.lr.ph, label %.preheader, !llvm.loop !9

._crit_edge.loopexit:                             ; preds = %.lr.ph22
  %.pre = load i32, ptr %1, align 4, !tbaa !5
  br label %._crit_edge

._crit_edge:                                      ; preds = %0, %._crit_edge.loopexit, %.preheader
  %13 = phi i32 [ %10, %.preheader ], [ %.pre, %._crit_edge.loopexit ], [ 0, %0 ]
  %.lcssa = phi i32 [ %11, %.preheader ], [ %29, %._crit_edge.loopexit ], [ %5, %0 ]
  %14 = add nsw i32 %13, -1
  %15 = sext i32 %14 to i64
  %16 = sext i32 %.lcssa to i64
  %17 = sext i32 %13 to i64
  %18 = mul nsw i64 %17, %16
  %19 = add nsw i64 %15, 1
  %20 = icmp slt i64 %19, %18
  br i1 %20, label %.lr.ph26, label %._crit_edge27

.lr.ph22:                                         ; preds = %.preheader, %.lr.ph22
  %.01721 = phi i32 [ %28, %.lr.ph22 ], [ 1, %.preheader ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #6
  %21 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %22 = load i32, ptr %2, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [20100 x %"class.std::vector"], ptr @g, i64 0, i64 %23
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %24, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %25 = load i32, ptr %3, align 4, !tbaa !5
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds [20100 x %"class.std::vector"], ptr @g, i64 0, i64 %26
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %27, ptr noundef nonnull align 4 dereferenceable(4) %2)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  %28 = add nuw nsw i32 %.01721, 1
  %29 = load i32, ptr @n, align 4, !tbaa !5
  %30 = icmp slt i32 %28, %29
  br i1 %30, label %.lr.ph22, label %._crit_edge.loopexit, !llvm.loop !11

.lr.ph26:                                         ; preds = %._crit_edge, %.lr.ph26
  %.01424 = phi i64 [ %..014, %.lr.ph26 ], [ %18, %._crit_edge ]
  %.01523 = phi i64 [ %.015., %.lr.ph26 ], [ %15, %._crit_edge ]
  %31 = add nsw i64 %.01424, %.01523
  %32 = ashr i64 %31, 1
  %33 = call noundef zeroext i1 @_Z1fx(i64 noundef %32)
  %.015. = select i1 %33, i64 %.01523, i64 %32
  %..014 = select i1 %33, i64 %32, i64 %.01424
  %34 = add nsw i64 %.015., 1
  %35 = icmp slt i64 %34, %..014
  br i1 %35, label %.lr.ph26, label %._crit_edge27, !llvm.loop !12

._crit_edge27:                                    ; preds = %.lr.ph26, %._crit_edge
  %.014.lcssa = phi i64 [ %18, %._crit_edge ], [ %..014, %.lr.ph26 ]
  %36 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i64 noundef %.014.lcssa)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #4 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z1fx(i64 noundef) local_unnamed_addr #5

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

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = { 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 #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 = { 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 = distinct !{!12, !10}


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