View Compilation Error

0_0_4580772_26147.cpp:4: error: size of array `visit' is too large
0_0_4580772_26147.cpp: In function `int main()':
0_0_4580772_26147.cpp:18: error: `visit' undeclared (first use this function)
0_0_4580772_26147.cpp:18: error: (Each undeclared identifier is reported only once for each function it appears in.)