// Author: Nguyen Khac Trung // From : Le Thuy - Quang Binh #include <iostream> #include <algorithm> #include <vector> #include <set> #include <stack> #include <queue> #include <cstring> #include <string> #include <math.h> #include <vector> #include <fstream> #include <map> #include <numeric> using namespace std; #define fo(kt, l, r) for (ll kt = l; kt <= r; kt++) #define of(kt, r, l) for (ll kt = r; kt >= l; kt--) #define ll long long #define str string #define en cout << endl; #define db double #define rt return #define pb push_back #define mod 1000000007 #define ins insert #define fi first #define se second #define all(x) x.begin(), x.end() #define pll pair<ll, ll> int main() { ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); str st; cin >> st; ll dem = 0; st += 'z'; fo(i, 1, st.size() - 1) if (st[i - 1] >= '0' && st[i - 1] <= '9' && ((st[i] >= 'a' && st[i] <= 'z') || (st[i] <= 'Z' && st[i] >= 'A'))) dem++; cout << dem; }