class Solution {public:    vector
     
       fizzBuzz(int n) {        vector
      
        res;        for (int i = 1; i <= n; i++) {            if (i % 3 == 0 && i % 5 == 0)                res.push_back("FizzBuzz");            else if (i % 3 == 0)                res.push_back("Fizz");            else if (i % 5 == 0)                res.push_back("Buzz");            else                res.push_back(to_string(i));        }        return res;    }};