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danikin/just_stl.cpp

Created March 6, 2016 20:05
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just_stl.cpp
// sudo yum install gcc-c++
// gcc -std=gnu++0x -DNDEBUG -O3 just_stl.cpp -lstdc++ -o just_stl
// time ./just_stl
#include <unordered_map>
int main()
{
std::unordered_map<int, int> m;
for (int i = 0;i < 10000000;++i)
m[i*i] = i;
return 0;
}
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