文件目录

#include <iostream>
using namespace std;
int main()
{
    long long n, num;
    cin >> n;
    int ans = 0;
    while (n--)
    {
        scanf("%lld", &num);
        int sum = 0;
        while (num)
        {
            sum += num % 10;
            num /= 10;
        }
        ans = max(ans, sum);
    }
    cout << ans;
    return 0;
}