全部转换为c和ba = c-bb = bc = cd = b+ce = d+c = b+c+c = b+2cf = a-e = c-b-(b+2c) = -c-2ba+b+c+d+e+f=（c-b）+ b + c +（b+c）+（b+2c）+（-c-2b）= c-b+b+c+b+c+b+2c-c-2b=4cc为正整数所以最小值为14c=4所以a+...