#include <iostream> using namespace std; int main() { long long n, x, max_sum = 0; cin >> n; for (int i = 0; i < n; ++i) { cin >> x; long long sum = 0; while (x > 0) { sum += x % 10; x /= 10; } if (sum > max_sum) { max_sum = sum; } } cout << max_sum << endl; return 0; }