By Anita Komuves and Andrew R.C. Marshall BEREGSURANY, Hungary/SUDOVA VYSHNYA, Ukraine (Reuters) – People fleeing war in Ukraine poured into central Europe on Sunday, with queues at border crossings stretching back for kilometres on the fourth day of a Russian invasion that has pushed nearly 400,000 people to seek safety abroad. With men of conscription age prevented from leaving Ukraine, it is mostly women and children arriving at the border in eastern Poland, Slovakia and Hungary and in northern and northeastern Romania. At Beregsurany in Hungary, Valeria, a 44-year-old ethnic Hungarian from…