#include<bits/stdc++.h>
using namespace std;
int main(){
    freopen("log.in","r",stdin);
    freopen("log.out","w",stdout);
    char a=getchar();
    int ans=-1;
    while(a!=EOF){
        ans++;
        a=getchar();
    }
    cout<<ans;
    fclose(stdin);
    fclose(stdout);
    return 0;
}