#include <iostream>

using namespace std;

const int N = 100010;

char str[N];
int son[N][26], cnt[N], idx;

void insert(char str[])
{
    int p = 0;
    for (int i = 0; str[i]; ++i)
    {
        int t = str[i] - 'a';
        if (!son[p][t]) son[p][t] = ++idx;
        p = son[p][t];
    }
    cnt[p]++;
}

int query(char str[])
{
    int p = 0;
    for (int i = 0; str[i]; ++i)
    {
        int t = str[i] - 'a';
        if (!son[p][t]) return 0;
        p = son[p][t];
    }
    return cnt[p];
}

int main()
{
    int n;
    cin >> n;

    while (n--)
    {
        char op[2];
        scanf("%s%s", op, str);

        if (op[0] == 'I') insert(str);
        else printf("%d\n", query(str));
    }

    return 0;
}