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//╔════╗╔══╗╔═╗─╔╗╔╗──╔╗╔═══╗╔═══╗╔╗───╔═══╗╔═╗─╔╗╔═══╗╔╗───
//║╔╗╔╗║╚╣─╝║║╚╗║║║╚╗╔╝║║╔═╗║║╔═╗║║║───║╔═╗║║║╚╗║║║╔══╝║║───
//╚╝║║╚╝─║║─║╔╗╚╝║╚╗╚╝╔╝║║─╚╝║║─║║║║───║║─║║║╔╗╚╝║║╚══╗║║───
//──║║───║║─║║╚╗║║─╚╗╔╝─║║─╔╗║║─║║║║─╔╗║║─║║║║╚╗║║║╔══╝║║─╔╗
//──║║──╔╣─╗║║─║║║──║║──║╚═╝║║╚═╝║║╚═╝║║╚═╝║║║─║║║║╚══╗║╚═╝║
//──╚╝──╚══╝╚╝─╚═╝──╚╝──╚═══╝╚═══╝╚═══╝╚═══╝╚╝─╚═╝╚═══╝╚═══╝
#include<iostream>
#include<iomanip>
#include<vector>
#include<map>
#include<deque>
#include<utility>
#include<string>
#include<set>
#include<iterator>
#include<queue>
#include<cstring>
#include<stack>
#include<math.h>
#include<algorithm>
#define ll long long
#define unll unsigned long long
#define vii vector <int> 
#define rep(i, k, n) for(i=k;i<=n;i++)
#define strrep(s, i) rep(i, 0, s.length() - 1)
#define inrep(v, r) for(auto r : v)
#define irep(i, k, n) for(i=k;i>=n;i--)
#define newl cout << "\n"
#define len(x) x.length()
#define fastin ios_base::sync_with_stdio(false);cin.tie(NULL)
#define cspace(k) cout << k << " "
#define cendl(k) cout << k << "\n"
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MAX(a, b) ((a) < (b) ? (b) : (a))
#define dist(x1, x2, y1, y2) sqrt(pow(x1 - x2, 2) + pow(y1 - y2, 2))
const double PI = 3.14159265358979323846264338327950288419716939937510582097494459230;
#pragma warning(disable : 4996)
using namespace std;
template <class T1, class T2>
ll gcd(T1 a, T2 b) {
    if (a == b) {
        return a;
    }
    else if (a == 1 || b == 1) {
        return 1;
    }
    while (b) {
        a %= b;
        swap(a, b);
    }
    return a;
}
const long long inf = (long long)1e18 + 111;
const int iinf = (int)1e9 + 111;
const int SIZE = 1e5 + 11;
 
int n, kol, i, j;
string s;
 
int main() {
    fastin;
    cin >> n;
    getline(cin, s);
    rep(j, 1, n) {
        getline(cin, s);
        if (len(s)) rep(i, 0, s.length() - 1) {
            if (s[i] > 32 && s[i] <= 126) {
                kol++;
                while (s[i] > 32 && s[i] <= 126) {
                    i++;
                }
            }
        }
    }
    cout << kol;
}

#include <iostream>
#include <iterator>
#include <sstream>
#include <string>
#include <list>
 
typedef std::string S;
///----------------------------------------------------------------------------|
int main()
{   setlocale(0, "");
 
    S text; text = text
        + "Hello, world!\n"
        + "This is my home\n"
        + "\n"
        + "\n"
        + "Mother\n"
        + "Daughter\n";
    
    std::cout << text;
    
    std::istringstream iss(text);
    std::list<S> src( (std::istream_iterator<S>(iss)), 
                       std::istream_iterator<S>(   ));
    
    std::cout << src.size();
}