View Compilation Error

0_0_6417625_29867.cpp: In function `void add(int64)':
0_0_6417625_29867.cpp:15: error: `temp' undeclared (first use this function)
0_0_6417625_29867.cpp:15: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6417625_29867.cpp: In function `int query(int64)':
0_0_6417625_29867.cpp:28: error: `temp' undeclared (first use this function)
0_0_6417625_29867.cpp:31: error: redeclaration of `int hash'
0_0_6417625_29867.cpp:28: error: `int hash' previously declared here