View Compilation Error

0_0_30063931_25652.cpp:16:1: error: '__int' does not name a type
 __int 128 qpow(__int128 x,__int128 y)
 ^
0_0_30063931_25652.cpp: In function 'bool solve(ll)':
0_0_30063931_25652.cpp:36:25: error: 'qpow' was not declared in this scope
     __int128 t1=qpow(m,a);
                         ^