解这种题,一般首先是找出满足结果的和,不管有多少组,然后剩下的可以通过对消得0.-1/2-1/3-1/6=-1还差7个数1/4-(1/8+1/12+1/24)=01/10-(1/15+1/30)=0=>-1/2-1/3-1/6-1/4+1/8+1/12+1/24-1/10+1/15+1/30=-11/8-(1/12+1/...