#include using namespace std; #if __has_include() #include using namespace atcoder; #endif using ll = long long; using ld = long double; using ull = unsigned long long; #define endl "\n" typedef pair Pii; #define REP(i, n) for (int i = 0; i < (n); ++i) #define REP3(i, m, n) for (int i = (m); (i) < int(n); ++ (i)) #define rep(i,a,b) for(int i=(int)(a);i<(int)(b);i++) #define ALL(x) begin(x), end(x) #define rrep(i,a,b) for(int i=a;i>=b;i--) #define fore(i,a) for(auto &i:a) #define all(s) (s).begin(),(s).end() #define drep2(i, m, n) for (int i = (m)-1; i >= (n); --i) #define drep(i, n) drep2(i, n, 0) #define rever(vec) reverse(vec.begin(), vec.end()) #define sor(vec) sort(vec.begin(), vec.end()) #define fi first #define FOR_(n) for (ll _ = 0; (_) < (ll)(n); ++(_)) #define FOR(i, n) for (ll i = 0; (i) < (ll)(n); ++(i)) #define se second #define pb push_back #define P pair #define PQminll priority_queue, greater> #define PQmaxll priority_queue,less> #define PQminP priority_queue, greater

> #define PQmaxP priority_queue,less

> #define NP next_permutation #define die(a) {cout<void vcin(vector &n){for(int i=0;i>n[i];} templatevoid vcin(vector &n,vector &m){for(int i=0;i>n[i]>>m[i];} templatevoid vcout(vector &n){for(int i=0;ivoid vcin(vector> &n){for(int i=0;i>n[i][j];}}} templatevoid vcout(vector> &n){for(int i=0;i= 0; --(i)) templateauto min(const T& a){ return *min_element(all(a)); } templateauto max(const T& a){ return *max_element(all(a)); } templatevoid print(pair a){cout<bool chmax(T &a,const T b) { if (abool chmin(T &a,const T b) { if (b void ifmin(T t,T u){if(t>u){cout<<-1< void ifmax(T t,T u){if(t>u){cout<<-1<>=1;v>>=1;}else if(eu&&!ev){u>>=1;}else if(!eu&&ev){v>>=1;}else if(u>=v){u=(u-v)>>1;}else{ll tmp=u;u=(v-u)>>1;v=tmp;}}return !u?v<>= 1; } return ret; } vector divisor(ll x){ vector ans; for(ll i = 1; i * i <= x; i++){ if(x % i == 0) {ans.push_back(i); if(i*i!=x){ ans.push_back(x / ans[i]);}}}sor(ans); return ans; } ll pop(ll x){return __builtin_popcountll(x);} ll poplong(ll x){ll y=-1;while(x){x/=2;y++;}return y;} P hyou(P a){ll x=fastgcd(abs(a.fi),abs(a.se));a.fi/=x;a.se/=x;if(a.se<0){a.fi*=-1;a.se*=-1;}return a;} P Pplus(P a,P b){ return hyou({a.fi*b.se+b.fi*a.se,a.se*b.se});} P Ptimes(P a,ll b){ return hyou({a.fi*b,a.se});} P Ptimes(P a,P b){ return hyou({a.fi*b.fi,a.se*b.se});} P Pminus(P a,P b){ return hyou({a.fi*b.se-b.fi*a.se,a.se*b.se});} P Pgyaku(P a){ return hyou({a.se,a.fi});} void cincout(){ ios::sync_with_stdio(false); std::cin.tie(nullptr); cout<< fixed << setprecision(15); } //単位元ちゃんと確認しろ!!! template vector> multi(vector> &a,vector> &b){ vector> c(a.size(),vector(b[0].size())); for(int i=0;i vector> mul_exp(vector> adj, ll k){ if (k == 1) return adj; vector> res(int(adj.size()),vector(int(adj[0].size()))); for(int i=0;i0){ if(k&1) res=multi(adj,res); adj=multi(adj,adj); k/=2; } return res; } using mint = modint998244353; int main(){ cincout(); ll n,m,k; cin>>n>>m>>k; vector c(k); vcin(c); //{a,b,c,d,e,0} -> {?,?,?,?,?,0} vector> d(36,vector(36)); for(int i=0;i<6;i++){ for(int j=0;j<6;j++){ if(i) d[i*6+j][(i-1)*6+j]=1; d[i*6+j][5*6+j]=1; } } d=mul_exp(d,n); for(int i=0;i<6;i++){ for(int j=0;j<36;j++){ d[30+i][j]=0; } } d=mul_exp(d,m-1); for(int i=0;i> p(6,vector(6)); for(int j=0;j<6;j++){ if(j) p[j][j-1]=1; p[j][5]=1; } auto p1=mul_exp(p,n*m-1); mint all=0; auto p2=mul_exp(p,c[i]); auto p3=mul_exp(p,n-1-c[i]); vector r={0,0,0,0,0,1}; vector q(6); vector q2(6); for(int k=0;k<6;k++){ for(int l=0;l<6;l++) q[l]+=r[k]*p2[k][l]; } for(int k=0;k<6;k++){ for(int l=0;l<6;l++) q2[l]+=r[k]*p1[k][l]; } for(int j=0;j<6;j++){ all+=q2[j]*(j+1); } q.back()=0; r=q; for(auto &e:q) e=0; vector f(36); for(int j=0;j<6;j++){ f[j*6+j]=1; } vector g(36); for(int j=0;j<36;j++){ for(int k=0;k<36;k++){ g[k]+=f[j]*d[j][k]; } } for(int j=0;j<6;j++){ for(int k=0;k<6;k++) q[j]+=g[j*6+k]*r[k]; } q.back()=0; r=q; for(auto &e:q) e=0; for(int k=0;k<6;k++){ for(int l=0;l<6;l++) q[l]+=r[k]*p3[k][l]; } for(int j=0;j<6;j++){ all-=q[j]*(j+1); } cout<