#include <iostream>
#include <vector>
#include <map>
#include <algorithm>
using namespace std;
int main()
{
map<int, vector<int>> m;
m[1].push_back(2);
m[1].push_back(3);
vector<int>::iterator it;
for (it = m[1].begin(); it!=m[1].end(); it++){
cout << *it << endl;
}
}
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