Untitled

class Solution {
public:
    int countSeniors(vector<string>& details) {
        int ans = 0;
        
        for(int i=0;i<details.size();i++) {
            int age = 0;

            age = (details[i][11] - '0') * 10 + (details[i][12] - '0');
            
            if(age>60)ans++;
        }
        
        return ans;
    }
};