602997_0_0_7693.cpp: In function `double F(int)':
602997_0_0_7693.cpp:6: error: `sqrt' undeclared (first use this function)
602997_0_0_7693.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
602997_0_0_7693.cpp:7: error: `pow' undeclared (first use this function)
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