0_0_7022968_31469.cpp: In function `void rmq_2d()':
0_0_7022968_31469.cpp:52: error: `max' undeclared (first use this function)
0_0_7022968_31469.cpp:52: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_7022968_31469.cpp: In function `int query_2d(int, int, int, int)':
0_0_7022968_31469.cpp:72: error: `max' undeclared (first use this function)
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