include iostream include string using namespace std int main int Ix st

#include <iostream>
#include <string>

using namespace std;

int main() {
  int n,x,Ix,k=0;
  string a;
  getline(cin,a);

  for(int I=0;I<a.length();I++){
    if(isdigit(a[I]))
    k++;
  }

cout << k;
}