minx00min0y0minsxsysminxymaxx0xmax0yymaxsxsysmaxxy-x0x-sxsy-xygcdsxsygcd-maxxyminxysminxygcdsx0sxgcd0sysyminxyminyxmaxxymaxyxmax2-2s100gcd2min2FULL./TRS/Koprowski/gcd.trs