#include #define private public #include using namespace std; int main(){ int N, Q, type, u, v, num; cin >> N >> Q; num = N; bool zero = false; atcoder::dsu uf(2 * N); vector memo; while(Q--){ cin >> type; if(--type < 2){ cin >> u >> v; memo.push_back(--u); memo.push_back(--v); if(!uf.same(u, v + type * N)) num--; uf.merge(u, v + type * N); uf.merge(u + N, v + (1 ^ type) * N); if(uf.same(u, u + N)) zero = true; }else{ num = N; zero = false; for(int v : memo) uf.parent_or_size[v] = uf.parent_or_size[v + N] = -1; memo.clear(); } cout << (zero ? 0 : atcoder::modint998244353(2).pow(num).val()) << '\n'; } }