#include<bits/stdc++.h> using namespace std; int main(){ float h,w,bmi; cin>>h>>w; bmi=w/h/h; if(bmi<18.5){ cout<<"偏瘦"; }else if(bmi>=18.5&&bmi<23.9){ cout<<"正常"; }else if(bmi>=23.9&&bmi<27.9){ cout<<"偏胖"; }else if(bmi>=27.9&&bmi<39.9){ cout<<"肥胖"; }else{ cout<<"极重度肥胖"; } return 0; }