0分求条

#include<cstdio>
#include<iostream>
#include<cstring>
char a[100];
int ans; 
int main(){
	scanf("%s",a);
    for(int i=0;i<100;i++){
    	if (a[i] >= 'a' && a[i] <= 'z') { 
            ans++;
        }
        if (a[i] >= 'A' && a[i] <= 'Z') { 
    		ans++;
        }
        if (a[i] >= '0' && a[i] <= '9') {  
        	ans++;
        }
    }
    cout<<ans;
    return 0;

	
}