View Compilation Error

0_0_7836634_21960.cpp:11: error: `int64' does not name a type
0_0_7836634_21960.cpp: In function `void solve(int, int, int)':
0_0_7836634_21960.cpp:24: error: `quickPow' undeclared (first use this function)
0_0_7836634_21960.cpp:24: error: (Each undeclared identifier is reported only once for each function it appears in.)