#include #include #include #include #include using namespace std; #define MX 1020 int N; char s[MX]; char T[MX][MX]; vector > a; void read() { for(int i=0;i<(int)a.size();++i) { printf("%c",T[a[i].first][a[i].second]); } } void rotate() { for(int i=0;i<(int)a.size();++i) { int x,y; x=a[i].second; y=N-1-a[i].first; a[i]=make_pair(x,y); } sort(a.begin(),a.end()); } int main() { while(scanf("%d",&N),N) { a.clear(); for(int i=0;i