View Code of Problem 610

# include <stdio.h>
  main()
  {
	  int i,j,k,s,n,a[15];
	  a[1]=1;
	  a[2]=2;
	  a[3]=5;
	  a[4]=14;
	  for(i=5;i<=10;i++)
	  {
		  for(j=3,s=0;j<=i;j++)
			  for(k=2;k<=j;k++)
				  s=s+k;
			  a[i]=s+a[i-1];
	  }
	  while(scanf("%d",&n)!=EOF)
		  printf("%d\n",a[n]);
  }