#define ATCODER #define _USE_MATH_DEFINES #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; using ll = long long; using ld = long double; using pll = pair; using pdd = pair; //template using pq = priority_queue, greater>; #define FOR(i, a, b) for(ll i=(a); i<(b);i++) #define REP(i, n) for(ll i=0; i<(n);i++) #define ROF(i, a, b) for(ll i=(b-1); i>=(a);i--) #define PER(i, n) for(ll i=n-1; i>=0;i--) #define REPREP(i,j,a,b) for(ll i=0;i > #define VV2(type,n,m,val) vector< vector > val;val.resize(n);for(ll i;i #define VEC(type,n,val) vector val;val.resize(n) #define VL vector #define VVL vector< vector > #define VP vector< pair > #define SZ size() #define all(i) begin(i),end(i) #define SORT(i) sort(all(i)) #define BITI(i) (1<>i) & 1) != 0) #define ALLBIT(n) (ll(1)<v?v:n #define MP(a,b) make_pair(a,b) #define DET2(x1,y1,x2,y2) (x1)*(y2)-(x2)*(y1) #define DET3(x1,y1,z1,x2,y2,z2,x3,y3,z3) (x1)*(y2)*(z3)+(x2)*(y3)*(z1)+(x3)*(y1)*(z2)-(z1)*(y2)*(x3)-(z2)*(y3)*(x1)-(z3)*(y1)*(x2) #define INC(a) for(auto& v:a)v++; #define DEC(a) for(auto& v:a)v--; #define SQU(x) (x)*(x) #define L0 ll(0) #ifdef ATCODER #include using namespace atcoder; //using mint = modint1000000007; using mint2 = modint998244353; #endif template vector read(size_t n) { vector ts(n); for (size_t i = 0; i < n; i++) cin >> ts[i]; return ts; } template void read_tuple_impl(TV&) {} template void read_tuple_impl(TV& ts) { get(ts).emplace_back(*(istream_iterator(cin))); read_tuple_impl(ts); } template decltype(auto) read_tuple(size_t n) { tuple...> ts; for (size_t i = 0; i < n; i++) read_tuple_impl(ts); return ts; } using val = ll; using func = ll; val op(val a, val b) { return a + b; } val e() { return 0; } val mp(func f, val a) { return a + f; } func comp(func f, func g) { return f + g; } func id() { return 0; } ll g; bool f(val a) { return a < g; } ll di[4] = { 1,0,-1,0 }; ll dj[4] = { 0,1,0,-1 }; ll si[4] = { 0,3,3,0 }; ll sj[4] = { 0,0,3,3 }; //ll di[4] = { -1,-1,1,1 }; //ll dj[4] = { -1,1,-1,1 }; //ll di8[8] = { 0,-1,-1,-1,0,1,1,1 }; //ll dj8[8] = { -1,-1,0,1,1,1,0,-1 }; class Rational { public: Rational(ll nn = 0, ll dd = 1) { n = nn; d = dd; Reduction(); } Rational operator+() const { return *this; } Rational& operator=(ll nn) { n = nn; d = 1; return *this; } Rational& operator = (const Rational& r) { n = r.n; d = r.d; return *this; } Rational& operator += (const Rational& r) { n = n * r.d + r.n * d; d *= r.d; Reduction(); return *this; } Rational& operator -= (const Rational& r) { n = n * r.d - r.n * d; d *= r.d; Reduction(); return *this; } Rational& operator *= (const Rational& r) { n *= r.n; d *= r.d; Reduction(); return *this; } Rational& operator /= (const Rational& r) { n *= r.d; d *= r.n; Reduction(); return *this; } bool operator ==(const Rational& r) { return n * r.d == r.n * d; } bool operator !=(const Rational& r) { return !(*this == r); } bool operator <(const Rational& r) { if (d == 0 && r.d == 0) return n < 0 && 0 < r.n; if (r.d == 0) return r.n > 0; if (d == 0) return n < 0; return n * r.d < r.n * d; } bool operator >(const Rational& r) { if (d == 0 && r.d == 0) return r.n < 0 && 0 < n; if (r.d == 0) return r.n < 0; if (d == 0) return n > 0; return n * r.d < r.n * d; } bool operator <=(const Rational& r) { return !(*this > r); } bool operator >=(const Rational& r) { return !(*this < r); } void Reduction() { ll g = gcd(n, d); if (g == 0)return; if (d < 0)g *= -1; n /= g; d /= g; } // d is not negative ll n, d; }; static Rational operator + (const Rational& l, const Rational& r) { return Rational(l) += r; } static Rational operator - (const Rational& l, const Rational& r) { return Rational(l) -= r; } static Rational operator * (const Rational& l, const Rational& r) { return Rational(l) *= r; } static Rational operator / (const Rational& l, const Rational& r) { return Rational(l) /= r; } static bool operator < (const Rational& l, const Rational& r) { return Rational(l) < r; } static bool operator > (const Rational& l, const Rational& r) { return Rational(l) > r; } static bool operator <= (const Rational& l, const Rational& r) { return Rational(l) <= r; } static bool operator >= (const Rational& l, const Rational& r) { return Rational(l) >= r; } void solve() { ll m; string n; cin >> m; cin >> n; mint2 v = 1; mint2 sum = 0; ll mm = n.size(); REP(i, mm) { v *= (m - (n[i] - '0') - 1) / 10 + 1; sum *= m; sum += n[i] - '0'; } mint2 ans = sum * v; mint2 rv = 1; mint2 half = mint2(2).inv(); PER(i, mm) { ll c = (m - (n[i] - '0') - 1) / 10 + 1; ans += 10 * v * (c - 1) * half * rv; rv *= m; } cout << ans.val(); return; } int main() { ll t = 1; //cin >> t; while (t--) { solve(); } return 0; }