#include #include #include #include using namespace std; int main() { int n; while(cin>>n&&n!=0) { cin.get(); for(int i=1;i<=(n+1)/2;++i) cout< v1; vector v2; int sum1=0,sum2=0; int i=0; int m=n; while(n--) { string temp; vector v; getline(cin,temp); istringstream is(temp); string str; while(is>>str) v.push_back(str); str=v[v.size()-2]; if(i%2==0&&str=="no") v1.push_back('X'); else if(i%2==0&&str!="no") { v1.push_back('O'); ++sum1; } else if(i%2==1&&str=="no") v2.push_back('X'); else { v2.push_back('O'); ++sum2; } ++i; } for(int j=0;j!=v1.size();++j) cout<