#include #include #include #include #include #include #include #include #include #include #define rep(i,j,k) for(int i=j;i #define INF 1000000000 #define MOD 1000000009 #define pb push_back #define mp make_pair typedef long long ll; typedef unsigned long long ull; int dx[4]={0,1,0,-1},dy[4]={1,0,-1,0}; using namespace std; ll gcd(ll a,ll b){ if(a>a>>b; cout<<(a+b)/(b+1)<