#include <iostream>
#include <vector>
using namespace std;
const int maxn = 105;
int idx[maxn];
int find_root(int x) {
    while(x != idx[x]) {
        x = idx[x];
    }
    return x;
}
bool check(int a, int b) {
    if(find_root(a) == find_root(b)) {
        return true;
    }
    return false;
}
void unite_two_elements(int a, int b) {
    int root_a = find_root(a);
    int root_b = find_root(b);
    idx[root_a] = root_b;
}
int main() {
    for(int i = 0; i < maxn; i++) {
        idx[i] = i;
    }

    while(true){
        string s;
        int a, b;
        cin >> s >> a >> b;

        if(s == "unite") {
            unite_two_elements(a, b);
        }
        if(s == "check") {
            if(check(a, b)) {
                cout << "YES" << endl;
            }
            else {
                cout << "NO" << endl;
            }
        }
    }
    return 0;
}