int sum = 0;
    if(t == null) {
        Console.Write(s + ',' + sum);
        if(s == sum) return true;
        return false;
    } else{ //if t isnt null
        sum += t.value;
        Console.Write(s + ',' + sum);
        if(hasPathWithGivenSum(t.left,s-sum)) return true;
        if(hasPathWithGivenSum(t.right,s-sum)) return true;
        Console.Write(sum);
        return false;

    }