int main()
{
   char num[300];
   scanf("%s",&num);
   int len;
    len=strlen(num);
   int ii=1;
   int q=0;
   int w=0;
   int e=0;
   int r=0;
   int t=0;
   int y=0;
   int u=0;
   int i=0;
   int o=0;
   int p=0;
   int a=0;
   int s=0;
   int d=0;
   int f=0;
   int g=0;
   int h=0;
   int j=0;
   int k=0;
   int l=0;
   int z=0;
   int x=0;
   int c=0;
   int v=0;
   int b=0;
   int n=0;
   int m=0;
   int wo=0;
   for(ii=0;ii<len;ii++)
   {
	   if(num[ii]=='a'){a++;wo++;}
	   else if(num[ii]=='b'){b++;wo++;}
       else if(num[ii]=='c'){c++;wo++;}
else if(num[ii]=='d'){d++;wo++;}
else if(num[ii]=='e'){e++;wo++;}
else if(num[ii]=='f'){f++;wo++;}
else if(num[ii]=='g'){g++;wo++;}
else if(num[ii]=='h'){h++;wo++;}
else if(num[ii]=='i'){i++;wo++;}
else if(num[ii]=='j'){j++;wo++;}
else if(num[ii]=='k'){k++;wo++;}
else if(num[ii]=='l'){l++;wo++;}
else if(num[ii]=='m'){m++;wo++;}
else if(num[ii]=='n'){n++;wo++;}
else if(num[ii]=='o'){o++;wo++;}
else if(num[ii]=='p'){p++;wo++;}
else if(num[ii]=='q'){q++;wo++;}
else if(num[ii]=='r'){r++;wo++;}
else if(num[ii]=='s'){s++;wo++;}
else if(num[ii]=='t'){t++;wo++;}
else if(num[ii]=='u'){u++;wo++;}
else if(num[ii]=='v'){v++;wo++;}
else if(num[ii]=='w'){w++;wo++;}
else if(num[ii]=='x'){x++;wo++;}
else if(num[ii]=='y'){y++;wo++;}
else if(num[ii]=='z'){z++;wo++;}
   }
   if(wo==0)
   { printf("No");}
   else 
   {
	   if(a!=0){printf("a=%d",a);}
 if(b!=0){printf("\nb=%d",b);}
 if(c!=0){printf("\nc=%d",c);}
 if(d!=0){printf("\nd=%d",d);}
 if(e!=0){printf("\ne=%d",e);}
 if(f!=0){printf("\nf=%d",f);}
 if(g!=0){printf("\ng=%d",g);}
 if(h!=0){printf("\nh=%d",h);}
 if(i!=0){printf("\ni=%d",i);}
 if(j!=0){printf("\nj=%d",j);}
 if(k!=0){printf("\nk=%d",k);}
 if(l!=0){printf("\nl=%d",l);}
 if(m!=0){printf("\nm=%d",m);}
 if(n!=0){printf("\nn=%d",n);}
 if(o!=0){printf("\no=%d",o);}
 if(p!=0){printf("\np=%d",p);}
 if(q!=0){printf("\\nq=%d",q);}
 if(r!=0){printf("\nr=%d",r);}
 if(s!=0){printf("\ns=%d",s);}
 if(t!=0){printf("\nt=%d",t);}
 if(u!=0){printf("\nu=%d",u);}
 if(v!=0){printf("\nv=%d",v);}
 if(w!=0){printf("\nw=%d",w);}
 if(x!=0){printf("\nx=%d",x);}
 if(y!=0){printf("\ny=%d",y);}
 if(z!=0){printf("\nz=%d",z);}
   }
return 0;
}

