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#include<stdio.h>
#define N 10
int main()
{
int a[N][N];
int i,j,k;
for(i=0;i<N;i++)
{
for(k=0;k<N-i;k++)
printf(" ");
for(j=0;j<i;j++)
{
if(j==0||j==i-1)
a[i][j]=1;
else
a[i][j]=a[i-1][j-1]+a[i-1][j];
printf("%4d",a[i][j]);
}
printf("\n");
}
return 0;
}
#include<stdio.h>
int Pascal(int row,int col)
{
if(col==1||col==row)
return 1;
else
return Pascal(row-1,col-1)+Pascal(row-1,col);
}
int main()
{
int row,col;
scanf("%d %d",&row,&col);
printf("%d\n",Pascal(row,col));
return 0;
}