#include <vector>
#include <string>
#include <unordered_map>
 
using std::vector;
using std::string;
using std::unordered_map;
 
int main() {
    vector<string> names = {"alice", "brad", "collin", "brad", "dylan", "kim"};
    unordered_map<string, int> countMap;
 
    for (string& name: names) {
        if (countMap.count(name) == 0) {
            countMap[name] = 1;
        } else {
            countMap[name]++;
        }
    }
 
    return 0;
}```