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static void Main(string[] args)
{
int a,b;
int [][] yan=new int [8][];
for(a=0;a<yan .Length ;a++)
{
yan [a]=new int [a+1];
yan[a][0] = 1;
yan[a][a] = 1;
}
for (a = 2; a < yan.Length; a++)
{
for (b = 1; b < yan[a].Length-1; b++)
{
yan[a][b] = yan[a - 1][b - 1] + yan[a - 1][b];
}
}
for(a=0;a<yan.Length ;a++)
{
for (b=0;b<yan[a].Length ;b++)
{
Console.Write("{0,5}", yan[a][b]);
}
Console.WriteLine ();
}
Console.Read();
}
List<List<int> >arr=new List<List<int> >()