12 lines
243 B
C++
12 lines
243 B
C++
#include<cstdio>
|
|
#include<cmath>
|
|
int main()
|
|
{
|
|
double s,x,tEnter,tExit;
|
|
scanf("%lf%lf",&s,&x);
|
|
tEnter=log(1-0.02*(s-x)/7)/log(0.98);
|
|
tExit=log(1-0.02*(s+x)/7)/log(0.98);
|
|
printf("%c",tExit-tEnter>=1?'y':'n');
|
|
return 0;
|
|
}
|