题解

#include<iostream>
#include<string>
using namespace std;
int main(){
    string s;
    cin>>s;
    int cnt=0;
    for(int i=0;i<s.size()-1;i++){
        if(s[i]=='a'&&s[i+1]=='c'||s[i]=='A'&&s[i+1]=='C'){
            cnt++;
        }
    }
    cout<<cnt;
    return 0;
}