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using System ;
class Program
{
static void Main()
{
int [] [] a;
int [] b1 = {1, 2}, b2 = {3,4};
a = new int [2] [];
a [1] = b1;
a [0] = b2;
a [0] [0] = 7; a [0] [1] = 5; a [1] [1] = 0;
Console.Write( "{0} {1}", b1 [0], b1 [1]);
Console.Write( "{0} {1}", b2 [0], b2 [1]);
}
}
(**CharpBase**)