#include #define ft first #define sc second #define lb lower_bound #define ub upper_bound #define pb push_back #define pt(sth) cout << sth << "\n" #define chmax(a, b) {if(ab) a=b;} #define moC(a, s, b) (a)=((a)s(b)+MOD)%MOD using namespace std; typedef long long ll; typedef pair P; static const ll INF=1e18; static const ll MAX=1e5+7; static const ll MOD=998244353; ll max(ll a, ll b) {return a>b?a:b;} ll min(ll a, ll b) {return a> N >> K; pt(N*K); }