#include <bits/stdc++.h>
using namespace std;
int main()
{
int ux,uy,vx,vy,S;
cin >>S >> ux >> uy >>vx >>vy;
long long int s1,s2;
s1=(2*ux*uy)/10;
s2=(2*vx*vy)/10;
if(s1+s2>=S)
cout << "YES" << endl;
else
cout << "NO" << endl;
return 0;
}
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