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#include
   
    int main(){
       int a,b;    while(scanf("%d %d",&a,&b)!=EOF){
           float c=a/(b/100.00)/(b/100.00);        if(c<18.5)printf("Underweight\n");        else if(c>=18.5&&c<=23.9)printf("Normal\n");        else if(c>23.9&&c<=27.9)printf("Overweight\n");        else printf("Obese\n");    }}
   

c++:

//#include
   
    #include
    
     using namespace std;int main(){
       int a,b;    while(cin>>a>>b){
           float c=a/(b/100.00)/(b/100.00);        if(c<18.5)cout<<"Underweight";        else if(c>=18.5&&c<=23.9)cout<<"Normal";        else if(c>23.0&&c<=27.9)cout<<"Overweight";        else cout<<"Obese";        cout<
    
   

java:

import java.io.*;public class Main{
       public static void main(String[]args)throws IOException{
           BufferedReader br=new BufferedReader(new InputStreamReader(System.in));        String s;        while((s=br.readLine())!=null){
               String[]sa=s.split(" ");            int a=Integer.parseInt(sa[0]);            int b=Integer.parseInt(sa[1]);            double c=a/(b*0.01)/(b*0.01);            if(c<18.5)                System.out.println("Underweight");            else if(c<=23.9&&c>=18.5)                System.out.println("Normal");            else if(c<=27.9&&c>23.9)                System.out.println("Overweight");            else                System.out.println("Obese");        }    }}//           float b=Float.parseFloat(sa[1]);            double c=a*10000/(b*b);

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