#include <vector>
#include <string>
#include <atcoder/convolution>
const int DIGIT = 6;
const int BASE = 1000000;
struct positive_bigint {
    std::vector<int> d;
    positive_bigint() {
    }
    positive_bigint(long long X) {
        while (X > 0) {
            d.push_back(X % BASE);
            X /= BASE;
        }
    }
    positive_bigint(std::string S) {
        if (S == "0") {
            S = "";
        }
        int L = S.size();
        d.resize((L + DIGIT - 1) / DIGIT, 0);
        for (int i = L - 1; i >= 0; i -= 6) {
            for (int j = std::max(i - 5, 0); j <= i; j++) {
                d[i / DIGIT] *= 10;
                d[i / DIGIT] += S[j] - '0';
            }
        }
        std::reverse(d.begin(), d.end());
    }
    bool empty() const {
        return d.empty();
    }
    int size() const {
        return d.size();
    }
    int& operator [](int i) {
        return d[i];
    }
    int operator [](int i) const {
        return d[i];
    }
};
std::string to_string(const positive_bigint& A) {
    int N = A.size();
    std::string ans;
    for (int i = N - 1; i >= 0; i--) {
        std::string tmp = std::to_string(A[i]);
        if (i < N - 1) {
            ans += std::string(DIGIT - tmp.size(), '0');
        }
        ans += tmp;
    }
    if (ans.empty()) {
        ans = "0";
    }
    return ans;
}
std::istream& operator >>(std::istream& is, positive_bigint& A) {
    std::string S;
    is >> S;
    A = positive_bigint(S);
    return is;
}
std::ostream& operator <<(std::ostream& os, positive_bigint& A) {
    os << to_string(A);
    return os;
}
int cmp(const positive_bigint& A, const positive_bigint& B) {
    int N = A.size();
    int M = B.size();
    if (N < M) {
        return -1;
    }
    else if (N > M) {
        return 1;
    }
    else {
        for (int i = N - 1; i >= 0; i--) {
            if (A[i] < B[i]) {
                return -1;
            }
            if (A[i] > B[i]) {
                return 1;
            }
        }
        return 0;
    }
}
bool operator ==(const positive_bigint& A, const positive_bigint& B) {
    return cmp(A, B) == 0;
}
bool operator !=(const positive_bigint& A, const positive_bigint& B) {
    return cmp(A, B) != 0;
}
bool operator <(const positive_bigint& A, const positive_bigint& B) {
    return cmp(A, B) < 0;
}
bool operator >(const positive_bigint& A, const positive_bigint& B) {
    return cmp(A, B) > 0;
}
bool operator <=(const positive_bigint& A, const positive_bigint& B) {
    return cmp(A, B) <= 0;
}
bool operator >=(const positive_bigint& A, const positive_bigint& B) {
    return cmp(A, B) >= 0;
}
positive_bigint& operator +=(positive_bigint& A, const positive_bigint& B) {
    int N = A.size();
    int M = B.size();
    while (N < M) {
        A.d.push_back(0);
        N++;
    }
    for (int i = 0; i < M; i++) {
        A[i] += B[i];
    }
    for (int i = 0; i < N - 1; i++) {
        if (A[i] >= BASE) {
            A[i] -= BASE;
            A[i + 1]++;
        }
    }
    if (N > 0) {
        if (A[N - 1] >= BASE) {
            A.d.push_back(1);
            A[N - 1] -= BASE;
        }
    }
    return A;
}
positive_bigint operator +(const positive_bigint& A, const positive_bigint& B) {
    positive_bigint A2 = A;
    A2 += B;
    return A2;
}
positive_bigint& operator -=(positive_bigint& A, const positive_bigint& B) {
    int N = A.size();
    int M = B.size();
    for (int i = 0; i < M; i++) {
        A[i] -= B[i];
    }
    for (int i = 0; i < N - 1; i++) {
        if (A[i] < 0) {
            A[i] += BASE;
            A[i + 1]--;
        }
    }
    while (!A.empty()) {
        if (A.d.back() == 0) {
            A.d.pop_back();
        }
        else {
            break;
        }
    }
    return A;
}
positive_bigint operator -(const positive_bigint& A, const positive_bigint& B) {
    positive_bigint A2 = A;
    A2 -= B;
    return A2;
}
positive_bigint operator *(const positive_bigint& A, const positive_bigint& B) {
    if (A.empty() || B.empty()) {
        return 0;
    }
    int N = A.size();
    int M = B.size();
    std::vector<long long> a(N);
    for (int i = 0; i < N; i++) {
        a[i] = A[i];
    }
    std::vector<long long> b(M);
    for (int i = 0; i < M; i++) {
        b[i] = B[i];
    }
    std::vector<long long> C = atcoder::convolution_ll(a, b);
    for (int i = 0; i < N + M - 2; i++) {
        C[i + 1] += C[i] / BASE;
        C[i] %= BASE;
    }
    if (C[N + M - 2] >= BASE) {
        C.resize(N + M);
        C[N + M - 1] += C[N + M - 2] / BASE;
        C[N + M - 2] %= BASE;
    }
    positive_bigint ans;
    ans.d.resize(C.size());
    for (int i = 0; i < C.size(); i++) {
        ans[i] = C[i];
    }
    return ans;
}
positive_bigint operator *=(positive_bigint& A, const positive_bigint& B) {
    A = A * B;
    return A;
}
struct bigint {
    bool neg = false;
    positive_bigint a;
    bigint() {
    }
    bigint(long long X) : neg(X < 0), a(abs(X)) {
    }
    bigint(const positive_bigint& X, bool neg = false) : neg(neg), a(X) {
    }
    bigint(const std::string& s) {
        if (!s.empty()) {
            if (s[0] == '-') {
                neg = true;
                a = positive_bigint(s.substr(1, s.size() - 1));
            }
            else {
                a = positive_bigint(s);
            }
        }
    }
    bool empty() const {
        return a.empty();
    }
    int size() const {
        return a.size();
    }
    int& operator [](int i) {
        return a[i];
    }
};
std::string to_string(const bigint& A) {
    std::string ans;
    if (A.neg) {
        ans += '-';
    }
    ans += to_string(A.a);
    return ans;
}
std::istream& operator >>(std::istream& is, bigint& A) {
    std::string S;
    is >> S;
    if (S != "0") {
        A = bigint(S);
    }
    return is;
}
std::ostream& operator <<(std::ostream& os, bigint A) {
    os << to_string(A);
    return os;
}
positive_bigint abs(const bigint& A) {
    return A.a;
}
int cmp(const bigint& A, const bigint& B) {
    if (!A.neg) {
        if (!B.neg) {
            return cmp(A.a, B.a);
        }
        else {
            return 1;
        }
    }
    else {
        if (!B.neg) {
            return -1;
        }
        else {
            return cmp(B.a, A.a);
        }
    }
}
bool operator ==(const bigint& A, const bigint& B) {
    return cmp(A, B) == 0;
}
bool operator !=(const bigint& A, const bigint& B) {
    return cmp(A, B) != 0;
}
bool operator <(const bigint& A, const bigint& B) {
    return cmp(A, B) < 0;
}
bool operator >(const bigint& A, const bigint& B) {
    return cmp(A, B) > 0;
}
bool operator <=(const bigint& A, const bigint& B) {
    return cmp(A, B) <= 0;
}
bool operator >=(const bigint& A, const bigint& B) {
    return cmp(A, B) >= 0;
}
bigint operator +(const bigint& A) {
    return A;
}
bigint operator -(const bigint& A) {
    bigint A2 = A;
    if (!A2.empty()) {
        A2.neg = !A2.neg;
    }
    return A2;
}
bigint& operator +=(bigint& A, const bigint& B) {
    if (A.neg == B.neg) {
        A.a += B.a;
    }
    else {
        int c = cmp(A.a, B.a);
        if (c > 0) {
            A.a -= B.a;
        }
        else if (c < 0) {
            A.a = B.a - A.a;
            A.neg = !A.neg;
        }
        else {
            A = 0;
        }
    }
    return A;
}
bigint operator +(const bigint& A, const bigint& B) {
    bigint A2 = A;
    A2 += B;
    return A2;
}
bigint& operator -=(bigint& A, const bigint& B) {
    if (A.neg != B.neg) {
        A.a += B.a;
    }
    else {
        int c = cmp(A.a, B.a);
        if (c > 0) {
            A.a -= B.a;
        }
        else if (c < 0) {
            A.a = B.a - A.a;
            A.neg = !A.neg;
        }
        else {
            A = 0;
        }
    }
    return A;
}
bigint operator -(const bigint& A, const bigint& B) {
    bigint A2 = A;
    A2 -= B;
    return A2;
}
bigint operator *=(bigint& A, const bigint& B) {
    if (A.empty() || B.empty()) {
        A = 0;
    }
    else {
        if (B.neg) {
            A.neg = !A.neg;
        }
        A.a *= B.a;
    }
    return A;
}
bigint operator *(const bigint& A, const bigint& B) {
    bigint A2 = A;
    A2 *= B;
    return A2;
}


#ifndef HIDDEN_IN_VS // 折りたたみ用

// 警告の抑制
#define _CRT_SECURE_NO_WARNINGS

// ライブラリの読み込み
#include <bits/stdc++.h>
using namespace std;

// 型名の短縮
using ll = long long; using ull = unsigned long long; // -2^63 ～ 2^63 = 9 * 10^18（int は -2^31 ～ 2^31 = 2 * 10^9）
using pii = pair<int, int>;	using pll = pair<ll, ll>;	using pil = pair<int, ll>;	using pli = pair<ll, int>;
using vi = vector<int>;		using vvi = vector<vi>;		using vvvi = vector<vvi>;	using vvvvi = vector<vvvi>;
using vl = vector<ll>;		using vvl = vector<vl>;		using vvvl = vector<vvl>;	using vvvvl = vector<vvvl>;
using vb = vector<bool>;	using vvb = vector<vb>;		using vvvb = vector<vvb>;
using vc = vector<char>;	using vvc = vector<vc>;		using vvvc = vector<vvc>;
using vd = vector<double>;	using vvd = vector<vd>;		using vvvd = vector<vvd>;
template <class T> using priority_queue_rev = priority_queue<T, vector<T>, greater<T>>;
using Graph = vvi;

// 定数の定義
const double PI = acos(-1);
const vi DX = { 1, 0, -1, 0 }; // 4 近傍（下，右，上，左）
const vi DY = { 0, 1, 0, -1 };
int INF = 1001001001; ll INFL = 4004004003104004004LL; // (int)INFL = 1010931620;

// 入出力高速化
struct fast_io { fast_io() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(18); } } fastIOtmp;

// 汎用マクロの定義
#define all(a) (a).begin(), (a).end()
#define sz(x) ((int)(x).size())
#define lbpos(a, x) (int)distance((a).begin(), std::lower_bound(all(a), x))
#define ubpos(a, x) (int)distance((a).begin(), std::upper_bound(all(a), x))
#define Yes(b) {cout << ((b) ? "Yes\n" : "No\n");}
#define YES(b) {cout << ((b) ? "YES\n" : "NO\n");}
#define rep(i, n) for(int i = 0, i##_len = int(n); i < i##_len; ++i) // 0 から n-1 まで昇順
#define repi(i, s, t) for(int i = int(s), i##_end = int(t); i <= i##_end; ++i) // s から t まで昇順
#define repir(i, s, t) for(int i = int(s), i##_end = int(t); i >= i##_end; --i) // s から t まで降順
#define repe(v, a) for(const auto& v : (a)) // a の全要素（変更不可能）
#define repea(v, a) for(auto& v : (a)) // a の全要素（変更可能）
#define repb(set, d) for(int set = 0, set##_ub = 1 << int(d); set < set##_ub; ++set) // d ビット全探索（昇順）
#define repis(i, set) for(int i = lsb(set), bset##i = set; i >= 0; bset##i -= 1 << i, i = lsb(bset##i)) // set の全要素（昇順）
#define repp(a) sort(all(a)); for(bool a##_perm = true; a##_perm; a##_perm = next_permutation(all(a))) // a の順列全て（昇順）
#define smod(n, m) ((((n) % (m)) + (m)) % (m)) // 非負mod
#define uniq(a) {sort(all(a)); (a).erase(unique(all(a)), (a).end());} // 重複除去
#define EXIT(a) {cout << (a) << endl; exit(0);} // 強制終了
#define inQ(x, y, u, l, d, r) ((u) <= (x) && (l) <= (y) && (x) < (d) && (y) < (r)) // 矩形内判定

// 汎用関数の定義
template <class T> inline ll pow(T n, int k) { ll v = 1; rep(i, k) v *= n; return v; }
template <class T> inline bool chmax(T& M, const T& x) { if (M < x) { M = x; return true; } return false; } // 最大値を更新（更新されたら true を返す）
template <class T> inline bool chmin(T& m, const T& x) { if (m > x) { m = x; return true; } return false; } // 最小値を更新（更新されたら true を返す）
template <class T> inline T get(T set, int i) { return (set >> i) & T(1); }

// 演算子オーバーロード
template <class T, class U> inline istream& operator>>(istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; }
template <class T> inline istream& operator>>(istream& is, vector<T>& v) { repea(x, v) is >> x; return is; }
template <class T> inline vector<T>& operator--(vector<T>& v) { repea(x, v) --x; return v; }
template <class T> inline vector<T>& operator++(vector<T>& v) { repea(x, v) ++x; return v; }

#endif // 折りたたみ用


#if __has_include(<atcoder/all>)
#include <atcoder/all>
using namespace atcoder;

#ifdef _MSC_VER
#include "localACL.hpp"
#endif

//using mint = modint1000000007;
using mint = modint998244353;
//using mint = modint; // mint::set_mod(m);

namespace atcoder {
	inline istream& operator>>(istream& is, mint& x) { ll x_; is >> x_; x = x_; return is; }
	inline ostream& operator<<(ostream& os, const mint& x) { os << x.val(); return os; }
}
using vm = vector<mint>; using vvm = vector<vm>; using vvvm = vector<vvm>; using vvvvm = vector<vvvm>;
#endif


#ifdef _MSC_VER // 手元環境（Visual Studio）
#include "local.hpp"
#else // 提出用（gcc）
inline int popcount(int n) { return __builtin_popcount(n); }
inline int popcount(ll n) { return __builtin_popcountll(n); }
inline int lsb(int n) { return n != 0 ? __builtin_ctz(n) : -1; }
inline int lsb(ll n) { return n != 0 ? __builtin_ctzll(n) : -1; }
inline int msb(int n) { return n != 0 ? (31 - __builtin_clz(n)) : -1; }
inline int msb(ll n) { return n != 0 ? (63 - __builtin_clzll(n)) : -1; }
#define dump(...)
#define dumpel(v)
#define dump_list(v)
#define dump_mat(v)
#define input_from_file(f)
#define output_to_file(f)
#define Assert(b) { if (!(b)) while (1) cout << "OLE"; }
#endif


//#include <boost/multiprecision/cpp_int.hpp>
//using Bint = boost::multiprecision::cpp_int;
using Bint = bigint;

string s; int i = 0;

Bint positive_number() {
	string num;
	while (isdigit(s[i])) {
		num += s[i];
		i++;
	}
	return Bint(move(num));
}

Bint number() {
	Bint res;
	if (s[i] == '0') {
		i++;
		res = 0;
	}
	else if (s[i] == '-') {
		i++;
		res = -number();
	}
	else {
		res = positive_number();
	}
	return res;
}

Bint expression();
Bint factor() {
	Bint res;
	if (s[i] == '(') {
		i++;
		res = expression();
		i++;
	}
	else {
		res = number();
	}
	return res;
}

//【多項式の積の展開】O(n (log n)^2)
/*
* 多項式 fs[i] の積（次数は n）を返す．
*/
Bint expand(vector<Bint> fs) {
    // verify : https://judge.yosupo.jp/problem/product_of_polynomial_sequence

    int m = sz(fs);

    // (次数, 多項式の番号) の組を要素数昇順に記録する．
    priority_queue_rev<pii> q;
    rep(i, m) q.push({ sz(fs[i].a.d), i });

    while (sz(q) >= 2) {
        int di, i, dj, j;
        tie(di, i) = q.top(); q.pop();
        tie(dj, j) = q.top(); q.pop();

        fs[i] *= fs[j];
        q.push({ di + dj, i });
    }

    return fs[q.top().second];
}

Bint term() {
    vector<Bint> facs;
    facs.emplace_back(factor());
	while (1) {
		if (s[i] == '*') {
			i++;
            facs.emplace_back(factor());
		}
		else break;
	}

	return expand(facs);
}

Bint expression() {
	Bint res = term();
	while (1) {
		if (s[i] == '+') {
			i++;
			res += term();
		}
		else if (s[i] == '-') {
			i++;
			res -= term();
		}
		else break;
	}
	return res;
}


int main() {
//	input_from_file("input.txt");
//	output_to_file("output.txt");
	
	int n;
	cin >> n >> s;

//	s = "";
//	rep(i, (int)1e6) s += '1';
//	s += '1';

	s.push_back('$');

	cout << expression() << endl;
}