1,2,3,4,5,6,7,8,9,10,11,12,加上正负号,使它们的和等于0

问题描述:

1,2,3,4,5,6,7,8,9,10,11,12,加上正负号,使它们的和等于0
1,2,3,4,5,6,7,8,9,10,11,12这十二个数,加上正号或负号,使它们的和等于0

1+2+3+4+5-6+7+8+9-10-11-12=0