View Compilation Error

920619_0_0_21819.cpp: In function `void Union(int, int)':
920619_0_0_21819.cpp:10: error: `find' undeclared (first use this function)
920619_0_0_21819.cpp:10: error: (Each undeclared identifier is reported only once for each function it appears in.)
920619_0_0_21819.cpp: In function `int find(int)':
920619_0_0_21819.cpp:16: error: `int find(int)' used prior to declaration