#include using namespace std; // matrix by drken // https://drken1215.hatenablog.com/entry/2020/03/08/175100 template struct Matrix { vector > val; Matrix(int n = 1, int m = 1, T v = 0) : val(n, vector(m, v)) {} void init(int n, int m, T v = 0) {val.assign(n, vector(m, v));} void resize(int n, int m) { val.resize(n); for (int i = 0; i < n; ++i) val[i].resize(m); } Matrix& operator = (const Matrix &A) { val = A.val; return *this; } size_t size() const {return val.size();} vector& operator [] (int i) {return val[i];} const vector& operator [] (int i) const {return val[i];} friend ostream& operator << (ostream& s, const Matrix& M) { s << endl; for (int i = 0; i < (int)M.size(); ++i) s << M[i] << endl; return s; } }; template Matrix operator * (const Matrix &A, const Matrix &B) { Matrix R(A.size(), B[0].size()); for (int i = 0; i < A.size(); ++i) for (int j = 0; j < B[0].size(); ++j) for (int k = 0; k < B.size(); ++k) R[i][j] += A[i][k] * B[k][j]; return R; } template Matrix pow(const Matrix &A, long long n) { Matrix R(A.size(), A.size()); auto B = A; for (int i = 0; i < A.size(); ++i) R[i][i] = 1; while (n > 0) { if (n & 1) R = R * B; B = B * B; n >>= 1; } return R; } template vector operator * (const Matrix &A, const vector &B) { vector v(A.size()); for (int i = 0; i < A.size(); ++i) for (int k = 0; k < B.size(); ++k) v[i] += A[i][k] * B[k]; return v; } template Matrix operator + (const Matrix &A, const Matrix &B) { Matrix R(A.size(), A[0].size()); for (int i = 0; i < A.size(); ++i) for (int j = 0; j < A[0].size(); ++j) R[i][j] = A[i][j] + B[i][j]; return R; } template Matrix operator - (const Matrix &A, const Matrix &B) { Matrix R(A.size(), A[0].size()); for (int i = 0; i < A.size(); ++i) for (int j = 0; j < A[0].size(); ++j) R[i][j] = A[i][j] - B[i][j]; return R; } // modint template struct Fp { long long val; constexpr Fp(long long v = 0) noexcept : val(v % MOD) { if (val < 0) val += MOD; } constexpr int getmod() { return MOD; } constexpr Fp operator - () const noexcept { return val ? MOD - val : 0; } constexpr Fp operator + (const Fp& r) const noexcept { return Fp(*this) += r; } constexpr Fp operator - (const Fp& r) const noexcept { return Fp(*this) -= r; } constexpr Fp operator * (const Fp& r) const noexcept { return Fp(*this) *= r; } constexpr Fp operator / (const Fp& r) const noexcept { return Fp(*this) /= r; } constexpr Fp& operator += (const Fp& r) noexcept { val += r.val; if (val >= MOD) val -= MOD; return *this; } constexpr Fp& operator -= (const Fp& r) noexcept { val -= r.val; if (val < 0) val += MOD; return *this; } constexpr Fp& operator *= (const Fp& r) noexcept { val = val * r.val % MOD; return *this; } constexpr Fp& operator /= (const Fp& r) noexcept { long long a = r.val, b = MOD, u = 1, v = 0; while (b) { long long t = a / b; a -= t * b; swap(a, b); u -= t * v; swap(u, v); } val = val * u % MOD; if (val < 0) val += MOD; return *this; } constexpr bool operator == (const Fp& r) const noexcept { return this->val == r.val; } constexpr bool operator != (const Fp& r) const noexcept { return this->val != r.val; } friend constexpr ostream& operator << (ostream &os, const Fp& x) noexcept { return os << x.val; } friend constexpr Fp modpow(const Fp &a, long long n) noexcept { if (n == 0) return 1; auto t = modpow(a, n / 2); t = t * t; if (n & 1) t = t * a; return t; } }; const int MOD = 1000000007; using mint = Fp; signed main(){ int64_t n,a,b,c; cin>>n>>a>>b>>c; Matrix mat(3,3,0); mat[0][0] = mat[1][1] = mat[2][2] = 1; mat[0][1] = mat[1][2] = mat[2][0] = -1; auto res = pow(mat,n-1); Matrix abc(3,1,0); abc[0][0] = a; abc[1][0] = b; abc[2][0] = c; auto ans = res*abc; cout<