82064_0_24338.cpp:4: error: `_int64' does not name a type
82064_0_24338.cpp: In function `int main()':
82064_0_24338.cpp:21: error: `c1' undeclared (first use this function)
82064_0_24338.cpp:21: error: (Each undeclared identifier is reported only once for each function it appears in.)
82064_0_24338.cpp:31: error: `c2' undeclared (first use this function)
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