#define MD 998244353
ll@x,@K,t,m;Mint a{},p=x*(100-x);REP(s,1<<2K){t=m=0;rep(k,2K)t<0?t:s>>k&1?++t:--t,m>?=t;a+=t?0:m;}wt(a*(p/1d4)**K);