View Compilation Error

0_0_25679292_22537.cpp: In function 'int main()':
0_0_25679292_22537.cpp:93:25: error: no matching function for call to '__gcd(int, ll&)'
           if(__gcd(2,mod)==1)gn=U.m[0][0]*U.m[1][0]%mod*ksm(2,mod-2,mod)%mod;
                         ^
0_0_25679292_22537.cpp:93:25: note: candidate is:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62:0,
                 from 0_0_25679292_22537.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:1229:5: note: template<class _EuclideanRingElement> _EuclideanRingElement std::__gcd(_EuclideanRingElement, _EuclideanRingElement)
     __gcd(_EuclideanRingElement __m, _EuclideanRingElement __n)
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:1229:5: note:   template argument deduction/substitution failed:
0_0_25679292_22537.cpp:93:25: note:   deduced conflicting types for parameter '_EuclideanRingElement' ('int' and 'long long int')
           if(__gcd(2,mod)==1)gn=U.m[0][0]*U.m[1][0]%mod*ksm(2,mod-2,mod)%mod;
                         ^