```cpp
@[zryabc123](/space/show?uid=28938)
var x,y,n:int64;//范围在qword内，qword的范围是0~2^64 -1
i:longint;
begin
read(x,n);
y:=x+1;
for i:=1 to n-1 do
y:=y*x+y;//传染的要加上原来的。
writeln(y);
end.
```
by 朝L夕 @ 2016-11-13 16:47:08
@zryabc123
by 朝L夕 @ 2016-11-13 16:48:44
@ zryabc123
by 朝L夕 @ 2016-11-13 16:49:22