#include #include using namespace std; typedef long long ll; const ll mod = 1e9 + 7; ll modpow(ll a, ll b, ll p = 1e9+7){ if(b == 0) return 1; if(b % 2 == 0){ ll d = modpow(a, b/2, p); return (d*d) % p; }else{ return (a%p * modpow(a, b-1, p)) % p; } } struct ModComb{ vector po, inv; ll N; ModComb(ll n) : N(n), po(n), inv(n) { po[0] = 1; for(int i = 1; i < N; i++) po[i] = (po[i-1] * i) % mod; inv[N-1] = modpow(po[N-1], mod-2, mod); for(int i = N-2; i >= 0; i--) inv[i] = (inv[i+1] * (i+1)) % mod; } ll nCk(ll n, ll k){ if(k == 0) return 1; if(n < k) return 0; return (((po[n]*inv[n-k])%mod)*inv[k])%mod; } ll nPk(ll n, ll k){ if(k == 0) return 1; if(n < k) return 0; return (po[n]*inv[n-k])%mod; } ll nHk(ll n, ll k){ if(n == 0 && k == 0) return 1; return nCk(n+k-1, k-1); } }; int main(){ ll a, b, n, k; cin >> a >> b >> n >> k; a %= mod, b %= mod; ModComb mc(n+1); ll x = (a*mc.nCk(n-1, k-1)%mod + b*mc.nCk(n-1, n+1-k)%mod)%mod; ll y = (a*a%mod+b*b%mod)%mod; for(int i = 1; i < n; i++){ ll t = (a*mc.nCk(n-1, i)%mod + b*mc.nCk(n-1, n-i)%mod)%mod; (y += t*t%mod) %= mod; } cout << x << endl << y << endl; return 0; }