#pragma GCC optimize("O3") #include using namespace std; using ll=long long; using P=pair; template using V=vector; #define fi first #define se second #define all(v) (v).begin(),(v).end() const ll inf=(1e18); constexpr ll mod=1000000007; ll gcd(ll a,ll b) {return b ? gcd(b,a%b):a;} ll lcm(ll c,ll d){return c/gcd(c,d)*d;} struct __INIT{__INIT(){cin.tie(0);ios::sync_with_stdio(false);cout< bool chmax(T &a, const T &b) { if (a bool chmin(T &a, const T &b) { if (a>b) { a=b; return 1; } return 0; } int main(){ ll n,d; cin>>n>>d; V a(n); for(ll i=0;i dat(n*n); int cnt=0; for(int i=0;i dat2; cnt=0; for(int i=0;i=2ll){ dat2.emplace_back(a[i]-a[j]+d); // cout<