#include #include #include using namespace atcoder; using mint = modint998244353; using namespace std; #define rep(i,n) for (int i = 0; i < (n); ++i) #define Inf 1000000001 int main(){ int N,Q; cin>>N>>Q; vector A(Q),B(Q); rep(i,Q){ cin>>A[i]; A[i]--; } rep(i,Q){ cin>>B[i]; B[i]--; } vector> S(Q+1); rep(i,N){ S[0].insert(i); } rep(i,Q){ while(S[i].size()>8){ S[i].erase(S[i].begin()); } for(auto a:S[i]){ S[i+1].insert(max(0,a-1)); S[i+1].insert(a); S[i+1].insert(min(N-1,a+1)); } S[i+1].erase(A[i]); S[i+1].erase(B[i]); if(S[i+1].size()==0){ cout<<"NO"< ans; for(int i=Q;i>=0;i--){ if(i==Q){ ans.push_back(*(S[i].begin())); } else{ int c = ans.back(); for(int j=-1;j<=1;j++){ if(S[i].count(c+j)){ ans.push_back(c+j); break; } } } } reverse(ans.begin(),ans.end()); rep(i,ans.size()){ cout<