#include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; typedef long long int ll; typedef pair P; vector prime; bool isprime[1000000]; void sieve(){ for(ll i=0; i<1000000; i++){ isprime[i]=1; } isprime[0]=0, isprime[1]=0; for(ll i=2; i<1000000; i++){ if(isprime[i]){ prime.push_back(i); for(ll j=2*i; j<1000000; j+=i){ isprime[j]=0; } } } return; } ll mulmod(ll a, ll b, ll m){ ll x=1000000000; ll m1=m/x, m2=m%x, a1=a/x, a2=a%x, b1=b/x, b2=b%x; ll q1=a1*b1/m1, r1=a1*b1%m1; ll c=r1*x+a1*b2+a2*b1-q1*m2, d=a2*b2; ll q2, r2; if(c<0) q2=-(-c+m1)/m1; else q2=c/m1; r2=c-q2*m1; ll ans=r2*x+d-q2*m2; if(ans<0) ans=(m-(-ans%m))%m; else ans%=m; return ans; } long long int powmod(long long int a, long long int k, long long int m){ if(a==0) return 0; long long int ap=a, ans=1; while(k>0){ if(k%2==1){ ans=mulmod(ans, ap, m); } ap=mulmod(ap, ap, m); k/=2; } return ans; } bool is_prime(ll n){ if(n==2){ return true; } if(n==1 || n%2==0){ return false; } ll d=n-1; int k=0; while(d%2==0){ d/=2; k++; } random_device rnd; mt19937_64 mt(rnd()); uniform_int_distribution rndn(2, n-1); for(int i=0; i<50; i++){ ll a=rndn(mt); bool comp=1; ll ap=powmod(a, d, n); if(ap==1 || ap==n-1) continue; for(int r=1; r>q; sieve(); for(int i=0; i>n; if(n<=3){ cout<<"No"<