public static void PopAll(MyStack[] stacks)
{
if (!stacks.Any() || stacks.Length == 1) return;
while (true)
{
for (var i = 0; i < stacks.Length; i++)
{
var curStack = stacks[i];
if (stacks.Where((v, _i) => _i != i && curStack.Sum > v.Sum).Any())
{
curStack.Pop();
}
}
if (stacks.All(_ => _.Sum == stacks.First().Sum)) break;
}
}