# include<iostream> # include<cstring> using namespace std; int main(){ string s; int S=0,n; getline(cin,s); n=s.size(); for(int i=0;i<n;i++){ if(s[i]=='0'||s[i]=='1'||s[i]=='2'||s[i]=='3'||s[i]=='4'||s[i]=='5'||s[i]=='6'||s[i]=='7'||s[i]=='8'||s[i]=='9'){ S++; } } cout<<S; return 0; }