> #include<stdio.h>
> void main()
> {
>     int N,i;
>     scanf("%d",&N);
>     float X[N],Y[N];
>     int YEAR[N];
>     for(i=0;i<N;i++)
>        {
>                     scanf("%f%f",&X[i],&Y[i]);
>                     YEAR[i]=(int)((X[i]*X[i]+Y[i]*Y[i])*3.14/100)+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.");
> }