View Compilation Error

0_0_21951102_17053.cpp: In function 'int main()':
0_0_21951102_17053.cpp:27:70: error: invalid operands of types '__gnu_cxx::__promote_2<int, long long int, double, double>::__type {aka double}' and 'int' to binary 'operator%'
             printf("Case %d: %lld\n",++cnt,(pow(2,n-1) + pow(4,n-1))%100);
                                                                      ^