ACM 1005–I Think I Need a Houseboat

 //1005--I Think I Need a Houseboat
#include <stdio.h>
#define pai 3.141592
#define MAX 100
int main()
{
    int i,j,n;
    float a[100],b[100],area;
    scanf("%d",&n);
    for(i=0;i<n;i++)
       scanf("%f %f",&a[i],&b[i]);
    for(i=0;i<n;i++)
          {  
             area=a[i]*a[i]+b[i]*b[i];
             for(j=0; j*2*50/pai<area;j++)
                 ;
                 printf("Property %d: This property will begin eroding in year %d./n",i+1,j);
        }
     printf("END OF OUTPUT.");
     return 0;
}         
//zdwzzu2006 1005 Accepted 164K 0MS C 507B 2008-01-27 23:26:34