#include using namespace std; using Int = long long; template inline void chmin(T1 &a,T2 b){if(a>b) a=b;} template inline void chmax(T1 &a,T2 b){if(a>n; vector a(n); for(Int i=0;i>a[i]; Int x=a[1]-a[0]; for(Int i=1;i