/** * code generated by JHelper * More info: https://github.com/AlexeyDmitriev/JHelper * @author aajisaka */ #include using namespace std; void debug_out() { cerr << endl; } template void debug_out(Head H, Tail... T) { cerr << " " << to_string(H); debug_out(T...); } #ifdef LOCAL #define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__) #else #define debug(...) 42 #endif #define SPEED ios_base::sync_with_stdio(false);cin.tie(nullptr) #define rep(i,n) for(int i=0; i<(int)(n); i++) #define all(v) v.begin(), v.end() template inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; } template inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; } using ll = long long; using P = pair; constexpr double PI = 3.14159265358979323846; mt19937_64 engine(chrono::steady_clock::now().time_since_epoch().count()); #include constexpr ll mod17 = 1e9+7; constexpr ll mod19 = 1e9+9; constexpr ll mod9 = 998244353; ll mod = mod17; // Mod int library unordered_map minvmap; ll minv(ll a, ll m) { auto k = a; auto p = minvmap[a]; if (p != 0) return p; ll b = m, u = 1, v = 0; while (b) { ll t = a/b; swap(a -= t*b, b); swap(u -= t*v, v); } p = (u%m+m)%m; minvmap[k] = p; return p; } struct mint { ll x; mint():x(0){} mint(ll x):x((x%mod+mod)%mod){} mint& fix() { x = (x%mod+mod)%mod; return *this;} mint operator-() const { return mint(0) - *this;} mint& operator+=(const mint& a){ if((x+=a.x)>=mod) x-=mod; return *this;} mint& operator-=(const mint& a){ if((x+=mod-a.x)>=mod) x-=mod; return *this;} mint& operator*=(const mint& a){ (x*=a.x)%=mod; return *this;} mint& operator/=(const mint& a){ (x*=minv(a.x, mod))%=mod; return *this; } mint operator+(const mint& a)const{ return mint(*this) += a;} mint operator-(const mint& a)const{ return mint(*this) -= a;} mint operator*(const mint& a)const{ return mint(*this) *= a;} mint operator/(const mint& a)const{ return mint(*this) /= a;} bool operator<(const mint& a)const{ return x < a.x;} bool operator==(const mint& a)const{ return x == a.x;} }; template T mod_pow(T a, ll x) { T res = 1; while(x > 0) { if (x & 1) res *= a; a *= a; x >>= 1; } return res; } class combination { // factorial public: std::vector fact; public: std::vector inv; combination(int n) { fact.resize(n + 1); inv.resize(n + 1); fact[0] = 1; for (int i = 1; i <= n; i++) { fact[i] = fact[i - 1] * i; } inv[n] = mint(1) / fact[n]; for (int i = n - 1; i >= 0; i--) { inv[i] = inv[i + 1] * (i + 1); } } // nCr public: mint get(int n, int r) { if (n < r || n < 0 || r < 0) return 0; return fact[n]*inv[r]*inv[n-r]; } // nPr public: mint p(int n, int r) { if (n < r || n < 0) return 0; return fact[n]*inv[n-r]; } }; class E { public: void solve(istream& cin, ostream& cout) { SPEED; ll a, b; cin >> a >> b; mint ans = a; cout << (ans*b).x << endl; } }; signed main() { E solver; std::istream& in(std::cin); std::ostream& out(std::cout); solver.solve(in, out); return 0; }