C :

#include<stdio.h>
#include<math.h>

int main()
{
    int r,w,l,n=0;
    while(scanf("%d",&r)!=EOF,r)
    {
        scanf("%d%d",&w,&l);
        if(r*2>=sqrt(w*w+l*l))
            printf("Pizza %d fits on the table.\n",++n);
        else
            printf("Pizza %d does not fit on the table.\n",++n);
    }
    return 0;
}

C++ :

#include<stdio.h>
#include<math.h>

int main()
{
    int r,w,l,n=0;
    while(scanf("%d",&r)!=EOF,r)
    {
        scanf("%d%d",&w,&l);
        if(r*2>=sqrt(w*w+l*l))
            printf("Pizza %d fits on the table.\n",++n);
        else
            printf("Pizza %d does not fit on the table.\n",++n);
    }
    return 0;
}

Java :

import java.util.*;

public class Main{
    public static void main(String[] args){
    Scanner in = new Scanner(System.in);
    int i = 0;
    while(in.hasNextInt()){
        i++;
        int r = in.nextInt();
        if(r==0) break;
        int w = in.nextInt();
        int l = in.nextInt();
        int W = (int)Math.pow(w,2);
        int L = (int)Math.pow(l,2);
        int R = (int)Math.pow(2*r,2);
        if(W+L<=R)
            System.out.println("Pizza "+i+" fits on the table.");
        else
            System.out.println("Pizza "+i+" does not fit on the table.");
    }
}
}