@[GPOI](/user/709303) 你写的是什么玩意儿，正解不是莫反吗！！！
by sid666 @ 2022-04-12 12:36:03
@[GPOI](/user/709303) 数据范围
by _maojun_ @ 2022-04-12 12:37:59
@[GPOI](/user/709303)
`sum=1;` smg
`j=i`smg
暴力 smg
by MatrixGroup @ 2022-04-12 12:39:40
@[GPOI](/user/709303) 而且调换位置要算两遍，$j$ 从 $1$ 开始，$sum=0$ 好不好
by sid666 @ 2022-04-12 12:40:54
这样您能喜提 $40$ pts
by sid666 @ 2022-04-12 12:41:32