#include<iostream>
#include<string>
#include<vector>
#include<deque>
#include<sstream>
using namespace std;
void solveMethod(int n, const vector<string>& lines)
{
int res = 0;
for(int i = 0; i < n; i++)
{
deque<string> ints;
stringstream ss(lines[i]);
string item;
while(getline(ss, item, ','))
{
ints.push_back(item);
}
int max = 0;
for(int j = 0; j < n; j++)
{
ints.push_back(ints.front());
ints.pop_front();
string binInt = "";
for(int k = 0; k < ints.size(); k++)
{
binInt += ints[k];
}
int sum = stoi(binInt, nullptr, 2);
if(sum > max)
{
max = sum;
}
}
res += max;
}
cout << res << endl;
}
int main()
{
int n;
cin >> n;
vector<string> lines(n);
for(int i = 0; i < n; i++)
{
cin >> lines[i];
}
solveMethod(n, lines);
return 0;
}