{for(i=n=$0;i--;j++<o=o"Z"RS)for(k=-n;k-n<(i?i:j);k++)o=o(k<n||i*j?k-i+n&&k-j+n?(i>j?k-i&&k-j:2*k-n+1)?FS:"Y":"X":"Z")}$0=o
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