#ifndef ONLINE_JUDGE #define _GLIBCXX_DEBUG #endif #include #include using namespace std; using ll=long long; using ld=long double; using st=string; using P=pair; typedef atcoder::modint mint; ll inf=9e18; template auto vec(const ll (&sizes)[s], const T& init = T()){ if constexpr(i < s) return vector(sizes[i], vec(sizes, init)); else return init; } int main(){ st x,y,z; cin>>x>>y>>z; set m; st a="",b="",c=""; for(ll i=0;i