#include <iostream>
#include <map>
#include <utility>
using namespace std;
int main() {
std::map< std::pair<int, int>, long long> m;
m.insert( make_pair( make_pair(1,1), 1000ll ));
cout << m[make_pair(1,1)] << endl;
m[make_pair(1,1)] = 1000ll;
cout << m[make_pair(1,1)] << endl;
return 0;
}
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