Get all anagrams from given words, C++ (gcc)

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//Title of this code

#include <iostream>
#include <vector>
#include <map>
#include <string>
#include <list>
#include <set>

using namespace std;

- Go through on the words list and make a charMap for every word
 - check the charMaps equality and write out when we got a match

map<char, int> getCharMap(const string& s) {

map<char, int> m;

for (int i = 0; i < s.length(); ++i) {
    
        if (m.find(s[i]) == m.end())
            m[s[i]] = 1;
        else
            ++m[s[i]];

}
  
    return m;
}

bool areCharMapEqual(map<char, int>& m1, map<char, int>& m2) {
    
    if (m1.size() != m2.size())
        return false;
    
    auto it1 = m1.begin();
    auto it2 = m2.begin();
    
    
    // the sizes are the same so we don't need further checking
    while (it1 != m1.end()) {
        
        if (it1->first != it2->first || it1->second != it2->second)
            return false;
        
        ++it1;        
        ++it2;
    }

return true; 
}

struct StringWithCharMap {
    string str;
    map<char, int> strMap;
    
    StringWithCharMap(string s, map<char, int> m): str(s), strMap(m) {}   
};

void findAnagrams(vector<string>& words) {
    
    list<StringWithCharMap> wordsCharMaps;
    
    for (int i = 0; i < words.size(); ++i)
        wordsCharMaps.push_back(
                        StringWithCharMap(words[i], getCharMap(words[i]))
                     );
    
    
    while (!wordsCharMaps.empty()) {
     
        map<char, int> curStrMap = wordsCharMaps.begin()->strMap;
        cout << wordsCharMaps.begin()->str << " ";
            
        wordsCharMaps.erase(wordsCharMaps.begin());

auto it = wordsCharMaps.begin();
        while (!wordsCharMaps.empty() && it != wordsCharMaps.end()) {

if (areCharMapEqual(curStrMap, it->strMap)) {
                cout << it->str << " ";
                it = wordsCharMaps.erase(it);
            } else
                ++it;

}
            
            
        cout << endl;
    }
    
  
}

int main() {
    
    vector<string> words = {"amazon", "zonama", "zomana", "ammazon", "zonnama", "", "anmanoz"};
    
    findAnagrams(words);
    
    
    map<char, int> m1 = getCharMap("zonama");
    map<char, int> m2 = getCharMap("zomana");
    
    cout << boolalpha << areCharMapEqual(m1, m2);
    
    
    
    
}

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Compilation time: 0.61 sec, absolute running time: 0.14 sec, cpu time: 0 sec, memory peak: 3 Mb, absolute service time: 1.75 sec