UVA 991 - Safe Salutations

#include <bits/stdc++.h>
using namespace std;
int main()
{
   int a[1000],i,j,n,sum,c=0;
   while(cin>>n)
   {
    if(c>0)
    {
      printf("\n");  //without first dataset
    }
    c++;
    a[0]=1;
    a[1]=1;
    for(i=2;i<=n;i++)
    {
        sum=0;
        for(j=0;j<i;j++)
        {
            sum=sum+(a[j]*a[i-j-1]);  //catalan number
        }
        a[i]=sum;
    }
    cout<<a[n]<<endl;

    }
    return 0;
}

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About Ashadullah Shawon

I am Ashadullah Shawon. I am a Software Engineer. I studied Computer Science and Engineering (CSE) at RUET. I Like To Share Knowledge. Learn More: Click Here