// Problem: No.2291 Union Find Estimate No.2291 联找估价 // Contest: yukicoder // URL: https://yukicoder.me/problems/no/2291 // Memory Limit: 512 MB // Time Limit: 2000 ms #include #define fastio ios::sync_with_stdio(0), cin.tie(0), cout.tie(0); #define dbg(x) cout << #x << " = " << (x) << "\n"; #define popcount(x) __builtin_popcountll((x)) #define all(v) (v).begin(), (v).end() #define pb emplace_back #define x first #define y second using namespace std; typedef long long ll; typedef pair pll; const int inf = 0x3f3f3f3f; const int mod = 998244353; const int N = 2e5 + 7; int n, q; int cnt; int ans[N]; class dsu { private: vector fa, sz, dis; public: void build(int N) { fa.resize(N + 1); sz.resize(N + 1); dis.resize(N + 1); for (int i = 0; i <= N; ++i) { fa[i] = i; sz[i] = 1; } } int find(int x) { if (fa[x] == x) return x; int root = find(fa[x]); dis[x] += dis[fa[x]]; ans[x] = ans[root]; return fa[x] = root; } void join(int x, int y) { x = find(x), y = find(y); if (x != y) { if (ans[x] == -1 || ans[y] == -1) ++cnt; fa[x] = y; sz[y] += sz[x]; if (ans[y] == -1) ans[y] = ans[x]; else ans[x] = ans[y]; } } int size(int i) { return sz[find(i)]; } bool same(int x, int y) { return find(x) == find(y); } }; namespace COM { ll quick(ll x, ll n) { ll res = 1; while (n) { if (n & 1) res = (res * x) % mod; x = x * x % mod; n >>= 1; } return res; } ll inv(ll x) { return quick(x, mod - 2); } ll fac[N], invfac[N]; void init() { fac[0] = 1; for (int i = 1; i < N; ++i) fac[i] = (fac[i - 1] * i) % mod; invfac[N - 1] = inv(fac[N - 1]); for (int i = N - 2; i >= 0; --i) invfac[i] = (invfac[i + 1] * (i + 1)) % mod; } ll C(int n, int m) { if (n < m || m < 0) return 0; return fac[n] * invfac[m] % mod * invfac[n - m] % mod; } } // namespace COM void solve() { cin >> n >> q; for (int i = 1; i <= n; i++) ans[i] = -1; dsu d; d.build(n); bool f = true; for (int i = 1; i <= q; i++) { array, 26> a; string str; cin >> str; for (int j = 0; j < n; j++) { if (str[j] >= 'a' && str[j] <= 'z') { a[str[j] - 'a'].pb(j + 1); } else if (str[j] != '?') { if (ans[d.find(j + 1)] != -1 && ans[d.find(j + 1)] != str[j] - '0') f = false; else if (ans[d.find(j + 1)] == -1) ans[d.find(j + 1)] = str[j] - '0', ++cnt; } } for (auto dig : a) { for (int j = 1; j < dig.size(); j++) { int x = dig.front(), y = dig[j]; x = d.find(x), y = d.find(y); if (!d.same(x, y)) { if (ans[x] != ans[y] && (ans[x] != -1 && ans[y] != -1)) f = false; d.join(x, y); } } } cout << (f ? COM::quick(10, max(0, n - cnt)) : 0) << "\n"; } } int main() { fastio; int t = 1; // cin >> t; while (t--) { solve(); } return 0; }