View Compilation Error

0_0_5313507_15974.cpp:4: error: `MAXSIZE' was not declared in this scope
0_0_5313507_15974.cpp: In function `int find(int)':
0_0_5313507_15974.cpp:8: error: `ufSet' undeclared (first use this function)
0_0_5313507_15974.cpp:8: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_5313507_15974.cpp: In function `void merge(int, int)':
0_0_5313507_15974.cpp:15: error: `ufSet' undeclared (first use this function)
0_0_5313507_15974.cpp: In function `int main()':
0_0_5313507_15974.cpp:27: error: `MAXSIZE' undeclared (first use this function)
0_0_5313507_15974.cpp:28: error: `ufSet' undeclared (first use this function)