第1行，n,m，表示方阵的大小。第2行至第m+1行，每行n个数，表示电路方阵。
‘1’表示导线，‘0‘表示空的，’2‘表示电池，‘3’表示灯泡。其中电池只有一个，其余有无限个。
如：
4&nbsp 4
1&nbsp 1&nbsp 1&nbsp 3
1&nbsp 0&nbsp 0&nbsp 1
1&nbsp 0&nbsp 0&nbsp 1
1&nbsp 2&nbsp 1&nbsp 1
表示如下电路：
----------------(灯泡)
|&nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp |
|&nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp |
-----|电池|-----------
电池不分正负极
灯泡短路也算亮
不会存在
1&nbsp 1&nbsp 1&nbsp 1&nbsp 1
1&nbsp 1&nbsp 1&nbsp 1&nbsp 1
的情况

若电路短路或断路，则输出‘Error'，否则输出有多少灯泡能亮。