#include using namespace std; #define int long long using ll=long long; using vi=vector; using vl=vector; using pii=pair; using pll=pair; #define ITR(i,c) for(auto i=begin(c);i!=end(c);++i) #define FORE(x,c) for(auto &x:c) #define FOR(i,a,n) for(int i=a,i##_len=(int)(n);i=0;--i) #define ALL(c) begin(c),end(c) #define RALL(c) rbegin(c),rend(c) // c++14 #define SZ(c) ((int)c.size()) #define EXIST(c,x) (c.find(x)!=end(c)) #define dump(...) const int DX[9]={0,1,0,-1,1,1,-1,-1,0}, DY[9]={-1,0,1,0,-1,1,1,-1,0}; const int INF=1001001001; const long long INFLL=1001001001001001001ll; template ostream& operator << (ostream &os, const vector &v) { ITR(i,v) os << *i << (i==end(v)-1 ? "" : " "); return os; } template istream& operator >> (istream &is, vector &v) { ITR(i,v) is >> * i; return is; } template istream& operator >> (istream &is, pair &p) { is >> p.first >> p.second; return is; } templatebool chmax(T &a,const T &b){if(abool chmin(T &a,const T &b){if(b>n; vi a(n); cin>>a; int v; cin>>v; cout<