View Compilation Error

0_0_1315338_17811.cpp: In function `int main()':
0_0_1315338_17811.cpp:38: error: no match for 'operator%' in 'sumBig(std::string, std::string)(string(((const std::basic_string<char, std::char_traits<char>, std::allocator<char> >&)((const std::basic_string<char, std::char_traits<char>, std::allocator<char> >*)(&s1))))) % 3'
0_0_1315338_17811.cpp:38: error: expected `;' at end of input
0_0_1315338_17811.cpp:38: error: expected `}' at end of input
0_0_1315338_17811.cpp:38: error: expected `}' at end of input
0_0_1315338_17811.cpp:38: error: expected `}' at end of input