#include <iostream>
#include <map>
using namespace std;
int main() {
    map<int, string> m;
    m.insert({1, "apple"});
    m[2] = "banana";
    m.insert({1, "orange"});
    m[2] = "pear";
    cout << m.size() << " " << m[1] << " " << m[2] << endl;
    return 0;
}