using System;

public class Program

{

    public static void Main()

    {

            {

        int n, sum=0, c=0,c1=0,c2=0 ,sum1=0, sum2=0, maxd1=0;

        while ((sum<1000000)&&(c<=1000))

        {   Console.WriteLine("please enter your candidate number 1or2:");

            n=int.Parse(Console.ReadLine());

            Console.WriteLine("please enter your donation:");

            sum=int.Parse(Console.ReadLine());

            {

            if(n==1){

                    c1++;

                    sum=sum1+sum;

            }

            else

                {

                c2++;

                sum=sum2+sum;

            }

        }

                if (sum1>maxd1) maxd1=sum1;

                c++;

    }

}

    }

}

​