#include<iostream> usingnamespace std; #define pi 3.1415926 int main() { double x,y,r2; int i,j,k; scanf("%d",&k); for(i=1;i<=k;i++) { scanf("%lf%lf",&x,&y); r2=x*x+y*y; for(j=1;j*50<0.5*pi*r2;j++); printf("Property %d: This property will begin eroding in year %d.\n",i,j); } printf("END OF OUTPUT.\n"); return0; }