#include using namespace std; #include using namespace atcoder; using ll=long long; using ld=long double; using ull=unsigned long long; using pii=pair; using pll=pair; using mint=modint998244353; const ll INF=1ll<<60; int main(){ ll M,N; cin>>M>>N; ll X[N+2]; X[0]=0; X[N+1]=M+1; for(int i=0;i>X[i+1]; mint ans=0; for(int i=0;i