#include using namespace std; typedef signed long long ll; #define _P(...) (void)printf(__VA_ARGS__) #define FOR(x,to) for(x=0;x<(to);x++) #define FORR(x,arr) for(auto& x:arr) #define FORR2(x,y,arr) for(auto& [x,y]:arr) #define ALL(a) (a.begin()),(a.end()) #define ZERO(a) memset(a,0,sizeof(a)) #define MINUS(a) memset(a,0xff,sizeof(a)) template bool chmax(T &a, const T &b) { if(a bool chmin(T &a, const T &b) { if(a>b){a=b;return 1;}return 0;} //------------------------------------------------------- int N,M,K; int C[505050]; ll dp[10101010]; ll over[10101010]; const ll mo=998244353; void solve() { int i,j,k,l,r,x,y; string s; cin>>N>>M>>K; dp[0]=1; FOR(i,2*N+1) { for(j=1;j<=6;j++) (dp[i+j]+=dp[i])%=mo; for(j=max(0,i-6);j>k; //1周目 ll ret=dp[k]*over[2*N-k]; // 2周目 (ret+=dp[N+k]*over[N-k])%=mo; //1周目は踏んで2周目も踏む (ret-=dp[k]*dp[N]%mo*over[N-k])%=mo; cout<<(ret%mo+mo)%mo<