题解

#include<bits/stdc++.h>
using namespace std;
int main(){
char a[5] = {'@','@','@','@','@'};
string s;
int cnt = 0;
for(int i=0;i<5;i++){
cin>>a[i];
a[i] = a[i];
if(a[i] != '@'){
cnt++;
}
}

cout<<cnt;