> 
> #include<stdio.h>
> #define PI 3.14159
> int main(){
> 
> int n;
> int year[100];
> scanf("%d",&n);
> 
> for(int i=0;i<n;i++)
> {
> 
> float x,y;
> scanf("%f %f",&x,&y);
> if(x<0)
> x=-x;
> float s=PI*(x*x+y*y);
> year[i]=(int)s/100+1;
> 
> 
> 
> }
> for( i=0;i<n;i++)
> printf("Property %d: This property will begin eroding in year %d.\n",i+1,year[i]);
> printf("END OF OUTPUT.\n");
> 
> return 0;
> 
> }