View Compilation Error

0_0_10846322_30740.cpp:21: error: size of array `tree' is too large
0_0_10846322_30740.cpp: In function `void ini(int)':
0_0_10846322_30740.cpp:24: error: `tree' undeclared (first use this function)
0_0_10846322_30740.cpp:24: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_10846322_30740.cpp: In function `void insert(int, int)':
0_0_10846322_30740.cpp:34: error: `tree' undeclared (first use this function)