0_0_17918980_20548.cpp: In function 'int main()':
0_0_17918980_20548.cpp:4:13: error: invalid operands of types '__gnu_cxx::__promote_2<int, long long int, double, double>::__type {aka double}' and 'int' to binary 'operator%'
#define mod 1000000007
^
0_0_17918980_20548.cpp:76:33: note: in expansion of macro 'mod'
printf("%lld\n",pow(26,n-cnt)%mod);
^
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