- #include <iostream> 
- #include <vector> 
- using namespace std; 
-   
- int main() { 
- 	int X = 2, Y = 2; 
- 	std::vector< std::vector< unsigned char > > index(X, std::vector<unsigned char>(Y)); 
- 	index[0][0] = 10; 
- 	index[0][1] = 20; 
- 	index[1][0] = 30; 
- 	index[1][1] = 40; 
- 	for(int i = 0; i < X; ++i) for (int j = 0; j < Y; ++j) cout << int(index[i][j]) << endl; 
- 	return 0; 
- } 
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