View Compilation Error

0_0_1141079_22514.cpp:5: error: size of array `graph' is too large
0_0_1141079_22514.cpp: In function `void init()':
0_0_1141079_22514.cpp:27: error: `graph' undeclared (first use this function)
0_0_1141079_22514.cpp:27: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1141079_22514.cpp: In function `void mintree()':
0_0_1141079_22514.cpp:52: error: `graph' undeclared (first use this function)