C++ :

#include<cstdio>
#include<cstring>
using namespace std;

int total=0;
int zhao(int a,int b)
{
	int shi=100/10;
	int wu=100/5;
	int er=100/2;
	int yi=100/1;
	int zhong=100*a;
	for(int x=1;x<=shi;++x)
	  for(int j=1;j<=wu;++j)
	    for(int z=1;z<=er;++z)
	      for(int y=1;y<=yi;++y)
	      if(10*x+5*j+2*z+1*y==zhong&&x+j+z+y==b)
	       ++total;
}
int main()
{
	int n,m;
	scanf("%d%d",&n,&m);
	zhao(n,m);
	if(total!=0)
	printf("%d",total);
	else
	printf("No");
	return 0;
}