; LLVM IR from tangjz/acm-icpc :: lydsy (2729)

; 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"

%struct.Big_int = type { i32, [2000 x i32] }

@A = external dso_local global %struct.Big_int, align 4
@n = external dso_local global i32, align 4
@m = external dso_local global i32, align 4
@.str = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca %struct.Big_int, align 4
  %5 = alloca i32, align 4
  %6 = alloca %struct.Big_int, align 4
  %7 = alloca %struct.Big_int, align 4
  %8 = alloca %struct.Big_int, align 4
  %9 = alloca %struct.Big_int, align 4
  %10 = alloca %struct.Big_int, align 4
  %11 = alloca %struct.Big_int, align 4
  store i32 0, ptr %1, align 4
  %12 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n, ptr noundef @m)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  store i32 1, ptr %2, align 4, !tbaa !5
  call void @_ZN7Big_int6getintERKi(ptr noundef nonnull align 4 dereferenceable(8004) @A, ptr noundef nonnull align 4 dereferenceable(4) %2)
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  store i32 2, ptr %3, align 4, !tbaa !5
  br label %13

13:                                               ; preds = %20, %0
  %14 = load i32, ptr %3, align 4, !tbaa !5
  %15 = load i32, ptr @n, align 4, !tbaa !5
  %16 = add nsw i32 %15, 1
  %17 = icmp sle i32 %14, %16
  br i1 %17, label %19, label %18

18:                                               ; preds = %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  br label %23

19:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 8004, ptr %4) #5
  call void @_ZN7Big_intmLERKi(ptr dead_on_unwind writable sret(%struct.Big_int) align 4 %4, ptr noundef nonnull align 4 dereferenceable(8004) @A, ptr noundef nonnull align 4 dereferenceable(4) %3)
  call void @llvm.lifetime.end.p0(i64 8004, ptr %4) #5
  br label %20

20:                                               ; preds = %19
  %21 = load i32, ptr %3, align 4, !tbaa !5
  %22 = add nsw i32 %21, 1
  store i32 %22, ptr %3, align 4, !tbaa !5
  br label %13, !llvm.loop !9

23:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  %24 = load i32, ptr @n, align 4, !tbaa !5
  %25 = load i32, ptr @m, align 4, !tbaa !5
  %26 = sub nsw i32 %24, %25
  %27 = add nsw i32 %26, 4
  store i32 %27, ptr %5, align 4, !tbaa !5
  br label %28

28:                                               ; preds = %35, %23
  %29 = load i32, ptr %5, align 4, !tbaa !5
  %30 = load i32, ptr @n, align 4, !tbaa !5
  %31 = add nsw i32 %30, 2
  %32 = icmp sle i32 %29, %31
  br i1 %32, label %34, label %33

33:                                               ; preds = %28
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  br label %38

34:                                               ; preds = %28
  call void @llvm.lifetime.start.p0(i64 8004, ptr %6) #5
  call void @_ZN7Big_intmLERKi(ptr dead_on_unwind writable sret(%struct.Big_int) align 4 %6, ptr noundef nonnull align 4 dereferenceable(8004) @A, ptr noundef nonnull align 4 dereferenceable(4) %5)
  call void @llvm.lifetime.end.p0(i64 8004, ptr %6) #5
  br label %35

35:                                               ; preds = %34
  %36 = load i32, ptr %5, align 4, !tbaa !5
  %37 = add nsw i32 %36, 1
  store i32 %37, ptr %5, align 4, !tbaa !5
  br label %28, !llvm.loop !11

38:                                               ; preds = %33
  call void @llvm.lifetime.start.p0(i64 8004, ptr %7) #5
  call void @llvm.lifetime.start.p0(i64 8004, ptr %8) #5
  call void @llvm.lifetime.start.p0(i64 8004, ptr %9) #5
  %39 = load i32, ptr @n, align 4, !tbaa !5
  %40 = add nsw i32 %39, 2
  call void @_ZNK7Big_intmlEi(ptr dead_on_unwind writable sret(%struct.Big_int) align 4 %9, ptr noundef nonnull align 4 dereferenceable(8004) @A, i32 noundef %40)
  %41 = load i32, ptr @n, align 4, !tbaa !5
  %42 = add nsw i32 %41, 3
  call void @_ZNK7Big_intmlEi(ptr dead_on_unwind writable sret(%struct.Big_int) align 4 %8, ptr noundef nonnull align 4 dereferenceable(8004) %9, i32 noundef %42)
  call void @llvm.lifetime.start.p0(i64 8004, ptr %10) #5
  call void @llvm.lifetime.start.p0(i64 8004, ptr %11) #5
  %43 = load i32, ptr @n, align 4, !tbaa !5
  %44 = load i32, ptr @m, align 4, !tbaa !5
  %45 = sub nsw i32 %43, %44
  %46 = add nsw i32 %45, 3
  call void @_ZNK7Big_intmlEi(ptr dead_on_unwind writable sret(%struct.Big_int) align 4 %11, ptr noundef nonnull align 4 dereferenceable(8004) @A, i32 noundef %46)
  call void @_ZNK7Big_intmlEi(ptr dead_on_unwind writable sret(%struct.Big_int) align 4 %10, ptr noundef nonnull align 4 dereferenceable(8004) %11, i32 noundef 2)
  call void @_ZNK7Big_intmiERKS_(ptr dead_on_unwind writable sret(%struct.Big_int) align 4 %7, ptr noundef nonnull align 4 dereferenceable(8004) %8, ptr noundef nonnull align 4 dereferenceable(8004) %10)
  call void @_ZNK7Big_int3putEv(ptr noundef nonnull align 4 dereferenceable(8004) %7)
  call void @llvm.lifetime.end.p0(i64 8004, ptr %11) #5
  call void @llvm.lifetime.end.p0(i64 8004, ptr %10) #5
  call void @llvm.lifetime.end.p0(i64 8004, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 8004, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 8004, ptr %7) #5
  ret i32 0
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN7Big_int6getintERKi(ptr noundef nonnull align 4 dereferenceable(8004), ptr noundef nonnull align 4 dereferenceable(4)) #2 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7Big_intmLERKi(ptr dead_on_unwind noalias writable sret(%struct.Big_int) align 4, ptr noundef nonnull align 4 dereferenceable(8004), ptr noundef nonnull align 4 dereferenceable(4)) #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNK7Big_intmlEi(ptr dead_on_unwind noalias writable sret(%struct.Big_int) align 4, ptr noundef nonnull align 4 dereferenceable(8004), i32 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNK7Big_intmiERKS_(ptr dead_on_unwind noalias writable sret(%struct.Big_int) align 4, ptr noundef nonnull align 4 dereferenceable(8004), ptr noundef nonnull align 4 dereferenceable(8004)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK7Big_int3putEv(ptr noundef nonnull align 4 dereferenceable(8004)) #4 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 = { "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 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = distinct !{!11, !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"

%struct.Big_int = type { i32, [2000 x i32] }

@A = external dso_local global %struct.Big_int, align 4
@n = external dso_local global i32, align 4
@m = external dso_local global i32, align 4
@.str = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca %struct.Big_int, align 4
  %4 = alloca i32, align 4
  %5 = alloca %struct.Big_int, align 4
  %6 = alloca %struct.Big_int, align 4
  %7 = alloca %struct.Big_int, align 4
  %8 = alloca %struct.Big_int, align 4
  %9 = alloca %struct.Big_int, align 4
  %10 = alloca %struct.Big_int, align 4
  %11 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n, ptr noundef nonnull @m)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #5
  store i32 1, ptr %1, align 4, !tbaa !5
  call void @_ZN7Big_int6getintERKi(ptr noundef nonnull align 4 dereferenceable(8004) @A, ptr noundef nonnull align 4 dereferenceable(4) %1)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  store i32 2, ptr %2, align 4, !tbaa !5
  %12 = load i32, ptr @n, align 4, !tbaa !5
  %.not5 = icmp slt i32 %12, 1
  br i1 %.not5, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %0
  %13 = phi i32 [ %12, %0 ], [ %20, %.lr.ph ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #5
  %14 = load i32, ptr @m, align 4, !tbaa !5
  %15 = add i32 %13, 4
  %16 = sub i32 %15, %14
  store i32 %16, ptr %4, align 4, !tbaa !5
  %17 = add nsw i32 %13, 2
  %.not26 = icmp sgt i32 %16, %17
  br i1 %.not26, label %._crit_edge9, label %.lr.ph8

.lr.ph:                                           ; preds = %0, %.lr.ph
  call void @llvm.lifetime.start.p0(i64 8004, ptr nonnull %3) #5
  call void @_ZN7Big_intmLERKi(ptr dead_on_unwind nonnull writable sret(%struct.Big_int) align 4 %3, ptr noundef nonnull align 4 dereferenceable(8004) @A, ptr noundef nonnull align 4 dereferenceable(4) %2)
  call void @llvm.lifetime.end.p0(i64 8004, ptr nonnull %3) #5
  %18 = load i32, ptr %2, align 4, !tbaa !5
  %19 = add nsw i32 %18, 1
  store i32 %19, ptr %2, align 4, !tbaa !5
  %20 = load i32, ptr @n, align 4, !tbaa !5
  %.not = icmp sgt i32 %18, %20
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge9:                                     ; preds = %.lr.ph8, %._crit_edge
  %.lcssa = phi i32 [ %17, %._crit_edge ], [ %30, %.lr.ph8 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #5
  call void @llvm.lifetime.start.p0(i64 8004, ptr nonnull %6) #5
  call void @llvm.lifetime.start.p0(i64 8004, ptr nonnull %7) #5
  call void @llvm.lifetime.start.p0(i64 8004, ptr nonnull %8) #5
  call void @_ZNK7Big_intmlEi(ptr dead_on_unwind nonnull writable sret(%struct.Big_int) align 4 %8, ptr noundef nonnull align 4 dereferenceable(8004) @A, i32 noundef %.lcssa)
  %21 = load i32, ptr @n, align 4, !tbaa !5
  %22 = add nsw i32 %21, 3
  call void @_ZNK7Big_intmlEi(ptr dead_on_unwind nonnull writable sret(%struct.Big_int) align 4 %7, ptr noundef nonnull align 4 dereferenceable(8004) %8, i32 noundef %22)
  call void @llvm.lifetime.start.p0(i64 8004, ptr nonnull %9) #5
  call void @llvm.lifetime.start.p0(i64 8004, ptr nonnull %10) #5
  %23 = load i32, ptr @n, align 4, !tbaa !5
  %24 = load i32, ptr @m, align 4, !tbaa !5
  %25 = add i32 %23, 3
  %26 = sub i32 %25, %24
  call void @_ZNK7Big_intmlEi(ptr dead_on_unwind nonnull writable sret(%struct.Big_int) align 4 %10, ptr noundef nonnull align 4 dereferenceable(8004) @A, i32 noundef %26)
  call void @_ZNK7Big_intmlEi(ptr dead_on_unwind nonnull writable sret(%struct.Big_int) align 4 %9, ptr noundef nonnull align 4 dereferenceable(8004) %10, i32 noundef 2)
  call void @_ZNK7Big_intmiERKS_(ptr dead_on_unwind nonnull writable sret(%struct.Big_int) align 4 %6, ptr noundef nonnull align 4 dereferenceable(8004) %7, ptr noundef nonnull align 4 dereferenceable(8004) %9)
  call void @_ZNK7Big_int3putEv(ptr noundef nonnull align 4 dereferenceable(8004) %6)
  call void @llvm.lifetime.end.p0(i64 8004, ptr nonnull %10) #5
  call void @llvm.lifetime.end.p0(i64 8004, ptr nonnull %9) #5
  call void @llvm.lifetime.end.p0(i64 8004, ptr nonnull %8) #5
  call void @llvm.lifetime.end.p0(i64 8004, ptr nonnull %7) #5
  call void @llvm.lifetime.end.p0(i64 8004, ptr nonnull %6) #5
  ret i32 0

.lr.ph8:                                          ; preds = %._crit_edge, %.lr.ph8
  call void @llvm.lifetime.start.p0(i64 8004, ptr nonnull %5) #5
  call void @_ZN7Big_intmLERKi(ptr dead_on_unwind nonnull writable sret(%struct.Big_int) align 4 %5, ptr noundef nonnull align 4 dereferenceable(8004) @A, ptr noundef nonnull align 4 dereferenceable(4) %4)
  call void @llvm.lifetime.end.p0(i64 8004, ptr nonnull %5) #5
  %27 = load i32, ptr %4, align 4, !tbaa !5
  %28 = add nsw i32 %27, 1
  store i32 %28, ptr %4, align 4, !tbaa !5
  %29 = load i32, ptr @n, align 4, !tbaa !5
  %30 = add nsw i32 %29, 2
  %.not2.not = icmp slt i32 %27, %30
  br i1 %.not2.not, label %.lr.ph8, label %._crit_edge9, !llvm.loop !11
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN7Big_int6getintERKi(ptr noundef nonnull align 4 dereferenceable(8004), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7Big_intmLERKi(ptr dead_on_unwind noalias writable sret(%struct.Big_int) align 4, ptr noundef nonnull align 4 dereferenceable(8004), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNK7Big_intmlEi(ptr dead_on_unwind noalias writable sret(%struct.Big_int) align 4, ptr noundef nonnull align 4 dereferenceable(8004), i32 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNK7Big_intmiERKS_(ptr dead_on_unwind noalias writable sret(%struct.Big_int) align 4, ptr noundef nonnull align 4 dereferenceable(8004), ptr noundef nonnull align 4 dereferenceable(8004)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK7Big_int3putEv(ptr noundef nonnull align 4 dereferenceable(8004)) local_unnamed_addr #4 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 = { 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 #2 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = distinct !{!11, !10}


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