简单的贪心

#include <cstring>
#include <algorithm>
#include <iostream>

using namespace std;
int cnt;


int main(){
    string s1, s2;
    cin >> s1 >> s2;
    int n = s1.size();
    for(int i = 0; i < n - 1; i ++ ){
        if(s1[i] != s2[i]) {
            if(s1[i + 1] == '*') s1[i + 1] = 'o';
            else s1[i + 1] = '*';
            cnt ++;
        }
    }

    cout << cnt << endl;
    return 0;
}