#include<bits/stdc++.h>
#define Rint register int
using namespace std;
typedef long long LL;
typedef __int128 I128;
const int N = 250003;
const LL mod = 1000000000000000031ll, X = 1000000000000000003ll, inv = 821428571428571454ll;
int n, a[N];
LL ans, p[N], val[N];
char str[N];
map<LL, int> tong;
inline void upd(LL &a, LL b){a += b; if(a >= mod) a -= mod;}
inline LL add(LL a, LL b){return (a + b >= mod) ? (a + b - mod) : (a + b);}
int main(){
	scanf("%d%s", &n, str + 1);
	p[0] = 1;
	for(Rint i = 1;i <= n;i ++){
		p[i] = p[i - 1]; val[i] = val[i - 1];
		if(str[i] == '+') upd(val[i], p[i]);
		else if(str[i] == '-') upd(val[i], mod - p[i]);
		else if(str[i] == '<') p[i] = (I128) p[i] * inv % mod;
		else if(str[i] == '>') p[i] = (I128) p[i] * X % mod;
	}
	for(Rint i = n;i;i --){
		++ tong[val[i]];
		ans += tong[add((I128) p[i - 1] * val[n] % mod, val[i - 1])];
	}
	printf("%lld", ans);
}