#include <iostream>
#include <map>
#include <string>

using namespace std;

int main()
{
    int n;
    while(cin>>n && n>0)
    {
        string s;
        getline(cin,s);             //eat white space.  needed for peaceful cin/getline cohabitation
        int currentSpace=0;         //count the column position in the text
        for(int i=0;i<n;i++)
        {
            getline(cin,s);         //invariant:  return First Space
            while (currentSpace<s.length() && s[currentSpace]!=' ')
                currentSpace++;
        }
        cout<<currentSpace+1<<endl; //print out the column, starting from 1
    }

    return 0;
}