#include<bits/stdc++.h>


using namespace std;

int main(void){
	int N;char c;
	cin>>N>>c;
	if(N == 0) return 0*printf("0");
	int n = 1,sum = 1;
	for(int i = 2;; ++i){
		sum += (2*i-1)*2;
		if(sum > N){
			sum -= (2*i-1)*2;
			i = i-1;
			for(int j = 2*i-1;j >= 1; j -= 2){
					int t= (2*i-1-j)/2;
					string s = string(t,' ')+string(j,c);
					cout<<s<<endl;
			}
			for(int j = 3;j <= 2*i-1; j += 2){
				int t= (2*i-1-j)/2;
					string s = string(t,' ')+string(j,c);
					cout<<s<<endl;
			}
			cout<<N-sum<<endl;
			break;
		}
	
	}
	
	
	return 0;
}

// 字符串格式化