deinier's blog

By deinier, 9 years ago, In English

Hi, everyone. I want to know the i — term (mod 1000000007) to the Catalan serie and I really don't know if my solution works. Do you, please, can explain me, if this way I get the answer? I need some help, thanks everybody.

  • long long c,n,i,j;
  • long long fact[1005][1005];
  • int main()
  • {
  • fact[1][1] = 1;
  • for(i=2;i<=1000;i++)
  • {
  • for(j=1;j<=i;j++)
  • {
  • if(j == 1)
  • fact[i][1] = 1;
  • else
  • {
  • if(i == j)
  • fact[i][j] = fact[i][j-1] + fact[i-1][j-1];
  • else
  • fact[i][j] = fact[i][j-1] + fact[i-1][j];
  • fact[i][j] %= 1000000007;
  • }
  • }
  • }
  • scanf("%d",&c);
  • while(c--)
  • {
  • scanf("%d",&n);
  • printf("%ld\n",fact[n][n]);
  • }
  • return 0;
  • }
 
 
 
 
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9 years ago, # |
  Vote: I like it +5 Vote: I do not like it

What you ask for is very unclear. Adding at least one interrogative sentence (ending with ?) could help.