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#include <bits/stdc++.h>
using namespace std;
const int N = 100010;
int son[N][26], cnt[N], idx; char str[N];
void insert(char str[]){ int p = 0; for (int i = 0; str[i] ; i ++){ int u = str[i] - 'a'; if (!son[p][u]) son[p][u] = ++idx; p = son[p][u]; }
cnt[p] ++; }
int query(char str[]){ int p = 0; for (int i = 0; str[i]; i ++){ int u = str[i] - 'a'; if (!son[p][u]) return 0; p = son[p][u]; }
return cnt[p]; }
int main(int argc, char const *argv[]) { int n; scanf("%d", &n); while (n --){ char op[2]; scanf("%s%s", op, str); if (op[0] == 'I')insert(str); else printf("%d\n", query(str)); } }
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