#include <iostream>
#include <vector>

using namespace std;

const int N = 15;

vector<int>g[N];
int h[N];

int main()
{
    string s;
    int n;
    cin>>n;;
    while(cin>>s)
    {
        int x;
        if(s=="add")
        {
            cin>>x;
            g[0].push_back(x);
        }
        else if(s=="sync")
        {
            cin>>x;
            if(h[x]<g[0].size())
                g[x].push_back(g[0][h[x]++]);

        }
        else
        {
            int ans=1e9;
            for(int i=1;i<n;i++)
                ans=min(ans,h[i]);
            cout<<ans<<endl;
        }
    }
    return 0;
}