View Compilation Error

0_0_6980618_28856.cpp:235: error: `_int64' does not name a type
0_0_6980618_28856.cpp: In function `void Count(int)':
0_0_6980618_28856.cpp:241: error: `ans' undeclared (first use this function)
0_0_6980618_28856.cpp:241: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6980618_28856.cpp: In function `void Compute()':
0_0_6980618_28856.cpp:248: error: `ans' undeclared (first use this function)
0_0_6980618_28856.cpp: In function `void Output(int)':
0_0_6980618_28856.cpp:273: error: `ans' undeclared (first use this function)