
int main()
{
	char str[300];
	int suma=0,sumb=0,sumc=0,sumd=0,sume=0,sumf=0,sumg=0,sumh=0,sumi=0,
	sumj=0,sumk=0,suml=0,summ=0,sumn=0,sumo=0,sump=0,sumq=0,sumr=0,
sums=0,sumt=0,sumu=0,sumv=0,sumw=0,sumx=0,sumy=0,sumz=0,len,i;
	scanf("%s",str);
	len= strlen(str);
	for(i=0;i<len;i++){
		if(str[i]=='a') suma++;
	}
		if(suma!=0) printf("a=%d\n",suma);

    for(i=0;i<len;i++){
		if(str[i]=='b') sumb++;
	}
		if(sumb!=0) printf("b=%d\n",sumb);
for(i=0;i<len;i++){
		if(str[i]=='c') sumc++;
	}
		if(sumc!=0) printf("c=%d\n",sumc);
for(i=0;i<len;i++){
		if(str[i]=='d') sumd++;
	}
		if(sumd!=0) printf("d=%d\n",sumd);
for(i=0;i<len;i++){
		if(str[i]=='e') sume++;
	}
		if(sume!=0) printf("e=%d\n",sume);
for(i=0;i<len;i++){
		if(str[i]=='f') sumf++;
	}
		if(sumf!=0) printf("f=%d\n",sumf);
for(i=0;i<len;i++){
		if(str[i]=='g') sumg++;
	}
		if(sumg!=0) printf("g=%d\n",sumg);
for(i=0;i<len;i++){
		if(str[i]=='h') sumh++;
	}
		if(sumh!=0) printf("h=%d\n",sumh);
for(i=0;i<len;i++){
		if(str[i]=='i') sumi++;
	}
		if(sumi!=0) printf("i=%d\n",sumi);
for(i=0;i<len;i++){
		if(str[i]=='j') sumj++;
	}
		if(sumj!=0) printf("j=%d\n",sumj);
for(i=0;i<len;i++){
		if(str[i]=='k') sumk++;
	}
		if(sumk!=0) printf("k=%d\n",sumk);
for(i=0;i<len;i++){
		if(str[i]=='l') suml++;
	}
		if(suml!=0) printf("l=%d\n",suml);
for(i=0;i<len;i++){
		if(str[i]=='m') summ++;
	}
		if(summ!=0) printf("m=%d\n",summ);
for(i=0;i<len;i++){
		if(str[i]=='n') sumn++;
	}
		if(sumn!=0) printf("n=%d\n",sumn);
for(i=0;i<len;i++){
		if(str[i]=='o') sumo++;
	}
		if(sumo!=0) printf("o=%d\n",sumo);
for(i=0;i<len;i++){
		if(str[i]=='p') sump++;
	}
		if(sump!=0) printf("p=%d\n",sump);
for(i=0;i<len;i++){
		if(str[i]=='q') sumq++;
	}
		if(sumq!=0) printf("q=%d\n",sumq);
for(i=0;i<len;i++){
		if(str[i]=='r') sumr++;
	}
		if(sumr!=0) printf("r=%d\n",sumr);
for(i=0;i<len;i++){
		if(str[i]=='s') sums++;
	}
		if(sums!=0) printf("s=%d\n",sums);
for(i=0;i<len;i++){
		if(str[i]=='t') sumt++;
	}
		if(sumt!=0) printf("t=%d\n",sumt);
for(i=0;i<len;i++){
		if(str[i]=='u') sumu++;
	}
		if(sumu!=0) printf("u=%d\n",sumu);
for(i=0;i<len;i++){
		if(str[i]=='v') sumv++;
	}
		if(sumv!=0) printf("v=%d\n",sumv);
for(i=0;i<len;i++){
		if(str[i]=='w') sumw++;
	}
		if(sumw!=0) printf("w=%d\n",sumw);
for(i=0;i<len;i++){
		if(str[i]=='x') sumx++;
	}
		if(sumx!=0) printf("x=%d\n",sumx);
for(i=0;i<len;i++){
		if(str[i]=='y') sumy++;
	}
		if(sumy!=0) printf("y=%d\n",sumy);
for(i=0;i<len;i++){
		if(str[i]=='z') sumz++;
	
}
		if(sumz!=0) printf("z=%d\n",sumz);

		if(suma==0&&sumb==0&&sumc==0&&sumd==0&&sume==0&&sumf==0&&sumg==0&&
			sumh==0&&sumi==0&&sumj==0&&sumk==0&&suml==0&&summ==0&&sumn==0&&sumo==0&&
			sump==0&&sumq==0&&sumr==0&&sums==0&&sumt==0&&sumu==0&&sumv==0&&sumw==0&&
			sumx==0&&sumy==0&&sumz==0)
        printf("No");

 
	return 0;
}


