naughty cat

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>

int main() {

    double h,x,v,t1,t2,new_v,needed_v;
    scanf("%lf %lf %lf",&h,&x,&v);
    t1=sqrt(2*h/9.8);
    t2=(x/v);
    if(t1>=t2)
        printf("YES\n");
    else
    {
        new_v=x/t1;
        needed_v=new_v-v;
        printf("NO %.2lf m/s\n",needed_v);
    }
    return 0;
}