View Compilation Error

0_0_5965983_26203.cpp: In function `int dfs(int, int, int)':
0_0_5965983_26203.cpp:77: error: `count' undeclared (first use this function)
0_0_5965983_26203.cpp:77: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_5965983_26203.cpp: In function `void query(int, int)':
0_0_5965983_26203.cpp:101: error: `count' undeclared (first use this function)