#include<iostream> using namespace std; int main() { int a, b, c; char k; cin >> a >> b >> k >> c; if (c==1) { for (int i=1; i<=a; i++) { for (int j=1; j<=b; j++) { cout << k; } cout << endl; } } else if (c==0) { for (int i=1; i<=b; i++) { cout << k; } cout << endl; for (int i=1; i<=a-2; i++) { cout << k; for (int j=1; j<=b-2; j++) { cout << " "; } cout << k << endl; } for (int i=1; i<=b; i++) { cout << k; } } }