#include <stdio.h>
#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 4000000000000000001LL


int main(){
	
	int n;
	cin>>n;
	vector<long long> a(n);
	rep(i,n)cin>>a[i];
	
	long long x = 0,y = 0,z = 0;
	rep(i,n){
		string s;
		cin>>s;
		if(s=="add")x++;
		if(s=="min")z++;
		if(s=="max")y++;
	}
	
	long long ok =0,ng = 300000000000000;
	while(ng-ok>1LL){
		long long mid = (ok+ng)/2;
		vector<long long> mo,le;
		rep(i,n){
			if(a[i] >= mid)mo.push_back(a[i]);
			else le.push_back(a[i]);
		}
		if(z>mo.size()){
			ng = mid;
			continue;
		}
		if(z<mo.size()){
			ok = mid;
			continue;
		}
		long long t = 0;
		if(x==0){
			rep(i,le.size())t = max(t,le[i]);
		}
		else if(y==0){
			rep(i,le.size())t += le[i];
		}
		else{
			sort(le.begin(),le.end());
			t = le.back();
			rep(i,x-1)t += le[i];
		}
		if(t >= mid){
			ok = mid;
		}
		else ng = mid;
	}
	cout<<ok<<endl;
	return 0;
}