1160

class Solution {
public:
    int countCharacters(vector<string>& words, string chars) {
    vector<vector<int>> v(words.size(), vector<int>(26, 0));

// Count the frequency of each character in each word and store it in the 2D vector 'v'
for (int i = 0; i < words.size(); i++) {
    for (int j = 0; j < words[i].size(); j++) {
        v[i][words[i][j] - 'a']++;
    }
}

// Count the frequency of characters in 'chars'
vector<int> hsh(26, 0);
for (int i = 0; i < chars.size(); i++) {
    hsh[chars[i] - 'a']++;
}

int ans = 0;

// Check if each word can be formed using characters from 'chars'
for (int i = 0; i < v.size(); i++) {
    int c = 0;
    for (int j = 0; j < 26; j++) {
        if (v[i][j] > hsh[j])
            c++;
    }
    if (c == 0) {
        ans += words[i].size();
    }
}

return ans;
    }
};