#include <bits/stdc++.h>
using namespace std;
const int INF = 1000000001;
const long long MOD = 998244353;
struct unionfind{
  vector<int> p, t;
  unionfind(int N): p(N, -1), t(N, INF){
  }
  int root(int x){
    if (p[x] < 0){
      return x;
    } else {
      return root(p[x]);
    }
  }
  bool same(int x, int y){
    return root(x) == root(y);
  }
  int size(int v){
    return -p[root(v)];
  }
  void unite(int x, int y, int w){
    x = root(x);
    y = root(y);
    if (p[x] < p[y]){
      swap(x, y);
    }
    p[y] += p[x];
    p[x] = y;
    t[x] = w;
  }
};
int main(){
  int N, X, Q;
  cin >> N >> X >> Q;
  unionfind UF(N);
  vector<long long> ans(N, 0);
  for (int i = 0; i < Q; i++){
    int t;
    cin >> t;
    if (t == 1){
      int v, w;
      cin >> v >> w;
      int u = X;
      u = UF.root(u);
      v = UF.root(v);
      if (u != v){
        long long res = ans[u] + ans[v] + (long long) UF.size(u) * UF.size(v) % MOD * w;
        res %= MOD;
        UF.unite(u, v, w);
        ans[UF.root(u)] = res;
      }
    }
    if (t == 2){
      int u, v;
      cin >> u >> v;
      if (!UF.same(u, v)){
        cout << -1 << endl;
      } else {
        int ans = 0;
        while (u != v){
          if (UF.t[u] > UF.t[v]){
            swap(u, v);
          }
          ans = UF.t[u];
          u = UF.p[u];
        }
        cout << ans << endl;
        X += ans;
        X %= N;
      }
    }
    if (t == 3){
      int v;
      cin >> v;
      cout << ans[UF.root(v)] << endl;
    }
    if (t == 4){
      int value;
      cin >> value;
      X += value;
      X %= N;
    }
  }
}