#pragma GCC target("avx") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #include // #include // #include // #include // using namespace __gnu_pbds; // #include // namespace multiprecisioninteger = boost::multiprecision; // using cint=multiprecisioninteger::cpp_int; using namespace std; using ll=long long; #define double long double using datas=pair; using ddatas=pair; using tdata=pair; using vec=vector; using mat=vector; using pvec=vector; using pmat=vector; // using llset=tree,rb_tree_tag,tree_order_statistics_node_update>; #define For(i,a,b) for(i=a;i<(ll)b;++i) #define bFor(i,b,a) for(i=b,--i;i>=(ll)a;--i) #define rep(i,N) For(i,0,N) #define rep1(i,N) For(i,1,N) #define brep(i,N) bFor(i,N,0) #define brep1(i,N) bFor(i,N,1) #define all(v) (v).begin(),(v).end() #define allr(v) (v).rbegin(),(v).rend() #define vsort(v) sort(all(v)) #define vrsort(v) sort(allr(v)) #define endl "\n" #define eb emplace_back #define print(x) cout< ostream& operator<<(ostream& os,pair& p){return os<<"{"< inline bool chmax(T& a,T b){bool x=a inline bool chmin(T& a,T b){bool x=a>b;if(x)a=b;return x;} void startupcpp(){ cin.tie(0); ios::sync_with_stdio(false); cout<0){ if(n&1)res=res*a%m; a=a*a%m; n>>=1; } return res; } ll eulerphy(ll N){ ll i,res=1; for(i=2;i*i<=N;i++){ if(N%i==0){ res*=i-1; while(N%i==0){N/=i;res*=i;} res/=i; } } if(N!=1){ res*=N-1; } return res; } vec diviserlist(ll N){ ll i; vec res; for(i=1;i*i>codeforces;while(codeforces--){ ll N; cin>>N; N=N*2-1; ll K=eulerphy(N); // print(N<<" "<