1897

class Solution {
public:
    bool makeEqual(vector<string>& words) {
        int ch[26];
        memset(ch, 0, sizeof ch);
        for(auto word: words){
            for(char c: word){
                ch[c-'a']++;
            }
        }
        int n = words.size();
        for(int i=0; i<26; i++)
            if(ch[i]%n)
                return false;
        return true;
    }
};