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#include <map>
#include <vector>
#include <iostream>
struct Data
{
int x;
int y;
int z;
};
std::map<int, std::vector<Data>> myMap;
int main()
{
myMap[123].push_back({1,2,3});
myMap[123].push_back({11,22,33});
myMap[456].push_back({4,5,6});
myMap[456].push_back({44,55,66});
std::cout << myMap[123][0].x
<< ", " << myMap[123][0].y
<< ", " << myMap[123][0].z
<< "\n";
std::cout << myMap[123][1].x
<< ", " << myMap[123][1].y
<< ", " << myMap[123][1].z
<< "\n";
std::cout << myMap[456][0].x
<< ", " << myMap[456][0].y
<< ", " << myMap[456][0].z
<< "\n";
std::cout << myMap[456][1].x
<< ", " << myMap[456][1].y
<< ", " << myMap[456][1].z
<< "\n";
return 0;
}