0_0_6453163_8258.cpp: In function `int main()':
0_0_6453163_8258.cpp:38: error: `Q' undeclared (first use this function)
0_0_6453163_8258.cpp:38: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6453163_8258.cpp:38: error: `>>' should be `> >' within a nested template argument list
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