#include <stdio.h>

int main()
{
    int T,i,year;
    float x,y;

    scanf("%d", &T);

    for(i=1;i<=T;i++) {
        scanf("%f %f", &x, &y);

        year=1;
        while(x*x + y*y > 100*year/3.141592) year++;

        printf("Property %d: "
                "This property will begin eroding in year %d.\n",
                i, year);
    }

    printf("END OF OUTPUT.\n");
    return 0;
}