#include <iostream>

using namespace std;
const int maxn = 105;
int root[maxn];
bool find(int A, int B) {
    if(root[A] == root[B]) {
        return true;
    }
    return false;
}
void union_two_elements(int A, int B) {
    int tmp = root[A];
    for(int i = 0; i < maxn; i++) {
        if(root[i] == tmp) {
            root[i] = root[B];
        }
    }
}
int main() {
    for(int i = 0; i < maxn; i++) {
        root[i] = i;
    }
    while(true) {
        string s;
        cin >> s;
        if(s == "u") {
            int a, b;
            cin >> a >> b;
            union_two_elements(a, b);
        }
        else {
            int a, b;
            cin >> a >> b;
            if(find(a, b)) {
                cout << "YES\n";
            }
            else {
                cout << "NO\n";
            }
        }
    }
    return 0;
}