USACO 1.1-ride

/*ID: m1590291PROG: rideLANG: C++*/#include <iostream>#include <fstream>using namespace std;int main(){string s1,s2;int sum1=1,sum2=1,i;ifstream fin ("ride.in");        ofstream fout ("ride.out");            fin>>s1>>s2;for(i=0;i<s1.size();i++)sum1*=s1[i]-64;for(i=0;i<s2.size();i++)sum2*=s2[i]-64;if((sum1%47)==(sum2%47))fout<<"GO"<<endl;elsefout<<"STAY"<<endl;fin.close();        fout.close();return 0;}