#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

// need
#include <iostream>
#include <algorithm>
// data structure
#include <bitset>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <utility>
#include <vector>
#include <complex>
//#include <deque>
#include <valarray>
#include <unordered_map>
#include <unordered_set>
#include <array>
// stream
//#include <istream>
#include <sstream>
//#include <ostream>
#include <fstream>
// etc
#include <cassert>
#include <cmath>
#include <functional>
#include <iomanip>
#include <chrono>
#include <random>
#include <numeric>

// input
#define INIT std::ios::sync_with_stdio(false);std::cin.tie(0);
#define VAR(type, ...)type __VA_ARGS__;MACRO_VAR_Scan(__VA_ARGS__);
template<typename T> void MACRO_VAR_Scan(T& t) { std::cin >> t; }
template<typename First, typename...Rest>void MACRO_VAR_Scan(First& first, Rest& ...rest) { std::cin >> first; MACRO_VAR_Scan(rest...); }
#define VEC_ROW(type, n, ...)std::vector<type> __VA_ARGS__;MACRO_VEC_ROW_Init(n, __VA_ARGS__); for(int w_=0; w_<n; ++w_){MACRO_VEC_ROW_Scan(w_, __VA_ARGS__);}
template<typename T> void MACRO_VEC_ROW_Init(int n, T& t) { t.resize(n); }
template<typename First, typename...Rest>void MACRO_VEC_ROW_Init(int n, First& first, Rest& ...rest) { first.resize(n); MACRO_VEC_ROW_Init(n, rest...); }
template<typename T> void MACRO_VEC_ROW_Scan(int p, T& t) { std::cin >> t[p]; }
template<typename First, typename...Rest>void MACRO_VEC_ROW_Scan(int p, First& first, Rest& ...rest) { std::cin >> first[p]; MACRO_VEC_ROW_Scan(p, rest...); }
#define VEC(type, c, n) std::vector<type> c(n);for(auto& i:c)std::cin>>i;
#define MAT(type, c, m, n) std::vector<std::vector<type>> c(m, std::vector<type>(n));for(auto& R:c)for(auto& w:R)std::cin>>w;
// output
#define OUT(dist) std::cout<<(dist);
#define FOUT(n, dist) std::cout<<std::fixed<<std::setprecision(n)<<(dist);
#define SOUT(n, c, dist) std::cout<<std::setw(n)<<std::setfill(c)<<(dist);
#define SP std::cout<<" ";
#define TAB std::cout<<"\t";
#define BR std::cout<<"\n";
#define SPBR(w, n) std::cout<<(w + 1 == n ? '\n' : ' ');
#define ENDL std::cout<<std::endl;
#define FLUSH std::cout<<std::flush;
#define SHOW(dist) {std::cerr << #dist << "\t:" << (dist) << "\n";}
#define SHOWVECTOR(v) {std::cerr << #v << "\t:";for(const auto& xxx : v){std::cerr << xxx << " ";}std::cerr << "\n";}
#define SHOWVECTOR2(v) {std::cerr << #v << "\t:\n";for(const auto& xxx : v){for(const auto& yyy : xxx){std::cerr << yyy << " ";}std::cerr << "\n";}}
#define SHOWQUEUE(a) {auto tmp(a);std::cerr << #a << "\t:";while(!tmp.empty()){std::cerr << tmp.front() << " ";tmp.pop();}std::cerr << "\n";}
// utility
#define ALL(a) (a).begin(),(a).end()
#define FOR(w, a, n) for(int w=(a);w<(n);++w)
#define RFOR(w, a, n) for(int w=(n)-1;w>=(a);--w)
#define REP(w, n) for(int w=0;w<int(n);++w)
#define RREP(w, n) for(int w=int(n)-1;w>=0;--w)
#define IN(a, x, b) (a<=x && x<b)
template<class T> inline T CHMAX(T & a, const T b) { return a = (a < b) ? b : a; }
template<class T> inline T CHMIN(T& a, const T b) { return a = (a > b) ? b : a; }
#define EXCEPTION(msg) throw std::string("Exception : " msg " [ in ") + __func__ + " : " + std::to_string(__LINE__) + " lines ]"
#define TRY(cond, msg) try {if (cond) EXCEPTION(msg);}catch (std::string s) {std::cerr << s << std::endl;}
//void CHECKTIME(std::function<void()> f) { auto start = std::chrono::system_clock::now(); f(); auto end = std::chrono::system_clock::now(); auto res = std::chrono::duration_cast<std::chrono::nanoseconds>((end - start)).count(); std::cerr << "[Time:" << res << "ns  (" << res / (1.0e9) << "s)]\n"; }
// test
template<class T> using V = std::vector<T>;
template<class T> using VV = V<V<T>>;

template<typename S, typename T>
std::ostream& operator<<(std::ostream& os, std::pair<S, T> p) {
	os << "(" << p.first << ", " << p.second << ")"; return os;
}

#define random_shuffle "USE std::shuffle!";

// type/const
#define int ll
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using PAIR = std::pair<int, int>;
using PAIRLL = std::pair<ll, ll>;
constexpr int INFINT = (1 << 30) - 1;                    // 1.07x10^ 9
constexpr int INFINT_LIM = (1LL << 31) - 1;              // 2.15x10^ 9
constexpr ll INFLL = 1LL << 60;                          // 1.15x10^18
constexpr ll INFLL_LIM = (1LL << 62) - 1 + (1LL << 62);  // 9.22x10^18
constexpr double EPS = 1e-10;
constexpr int MOD = 1000000007;
constexpr double PI = 3.141592653589793238462643383279;
template<class T, size_t N> void FILL(T(&a)[N], const T & val) { for (auto& x : a) x = val; }
template<class ARY, size_t N, size_t M, class T> void FILL(ARY(&a)[N][M], const T & val) { for (auto& b : a) FILL(b, val); }
template<class T> void FILL(std::vector<T> & a, const T & val) { for (auto& x : a) x = val; }
template<class ARY, class T> void FILL(std::vector<std::vector<ARY>> & a, const T & val) { for (auto& b : a) FILL(b, val); }
// ------------>8------------------------------------->8------------

namespace Test {
	signed main() {
		//VAR(int, n);
//VAR(std::string, s);
		std::string S = "+-<>";
		const int n = 50;
		auto system_now = std::chrono::system_clock::now();
		std::mt19937 mt(std::chrono::duration_cast<std::chrono::microseconds>(system_now.time_since_epoch()).count());
		std::uniform_int_distribution<> rand(/* min */0, /* max */3);
		std::string s;
		REP(_, n) s += S[rand(mt)];

		auto get = [&](int l, int r) {
			std::map<int, int> map;
			int p = 0;
			FOR(i, l, r) {
				/* */if (s[i] == '+') { if (++map[p] == 0) map.erase(p); }
				else if (s[i] == '-') { if (--map[p] == 0) map.erase(p); }
				else if (s[i] == '>') ++p;
				else if (s[i] == '<') --p;
			}

			return map;
		};

		auto sub = [&](std::map<int, int> a, const std::map<int, int> b) {
			for (auto& p : b) {
				if ((a[p.first] -= p.second) == 0) a.erase(p.first);
			}
			return a;
		};

		auto print = [&](std::map<int, int> map) {
			FOR(i, -10, 20) {
				OUT(map[i])SPBR(i, 20);
			}
		};

		VAR(int, l, r);

		OUT(s)BR;
		REP(i, n) {
			char c = ' ';
			if (IN(l, i, r)) c = '*';
			OUT(c);
		}BR;
		print(get(l, r));
		print(sub(get(0, r), get(0, l)));
		return 0;
	}
}

ll powMod(ll n, ll p, ll mod) {
	if (p < 0) p += mod - 1;
	n %= mod;
	ll res = 1;
	while (p) {
		if (p & 1) (res *= n) %= mod;
		(n *= n) %= mod;
		p >>= 1;
	}
	return res;
}

constexpr int N = 3;
constexpr int M[N] = { 1000000009, 1000000021, 1000000033 };
constexpr int B = 123457;

struct Hash {
	int val[N];
	Hash& norm() {
		REP(i, N) if ((val[i] %= M[i]) < 0) val[i] += M[i];
		return *this;
	}

	Hash(int x) { REP(i, N) val[i] = x; norm(); }
	Hash() : Hash(0) {}

	static Hash makePow(int n, int p) {
		Hash res;
		REP(i, N) res.val[i] = powMod(n, p, M[i]);
		return res;
	}
	static Hash makeInv(int x) {
		Hash res;
		REP(i, N) res.val[i] = powMod(x, M[i] - 2, M[i]);
		return res;
	}

	bool operator==(const Hash & r) const { return *this == r; }
	bool operator<(const Hash & r) const { 
		REP(i, N) if(this->val[i] != r.val[i]) return this->val[i] < r.val[i];
		return false;
	}
	Hash& operator+=(const Hash & r) { REP(i, N) val[i] += r.val[i]; norm(); return *this; }
	Hash& operator-=(const Hash & r) { REP(i, N) val[i] -= r.val[i]; norm(); return *this; }
	Hash& operator*=(const Hash & r) { REP(i, N) val[i] *= r.val[i]; norm(); return *this; }
	Hash& operator/=(const Hash & r) { 
		REP(i, N) val[i] *= powMod(r.val[i], M[i] - 2, M[i]); 
		norm(); 
		return *this; 
	}
};

signed main() {
	INIT;

	VAR(int, n);
	VAR(std::string, s);

	Hash X;
	{
		int p = 0;
		REP(i, n) {
			/* */if (s[i] == '+') X += Hash::makePow(B, p);
			else if (s[i] == '-') X -= Hash::makePow(B, p);
			else if (s[i] == '>') ++p;
			else if (s[i] == '<') --p;
		}
	}

	std::map<Hash, int> map;
	++map[X];
	int ans = 0;
	Hash A;
	{
		int p = 0;
		REP(i, n) {
			/* */if (s[i] == '+') A += Hash::makePow(B, p);
			else if (s[i] == '-') A -= Hash::makePow(B, p);
			else if (s[i] == '>') ++p;
			else if (s[i] == '<') --p;
			ans += map[A];
			{
				auto tX(X);
				tX /= Hash::makePow(B, -p);
				tX += A;
				++map[tX];
			}
		}
	}
	OUT(ans)BR;

	return 0;
}

Measured memory_bytes: 39572