anagram palindrome test

gistfile1.cpp

int main(){
    vector<int> char_count(int('z'-'a')+1);
    string word;
    cin >> word;
    for_each(begin(word), end(word), [&char_count](char c){ char_count[int(c-'a')]++; });
    auto odd=count_if(begin(char_count), end(char_count), [](int count){ return (count%2) == 1;});
    if(word.length()%2 == 1) --odd;
    cout << (odd==0)? "YES" : "NO"; 
}