import sys while True: try: n= int(input()) b=[] for i in range(n): b.append(input()) for i in range(n): sum=0 l = list(b[i]) s = set(b[i]) cnt =[] for j in s: cnt.append(l.count(j)) sn = len(cnt) cnt.sort(reverse=True) for k in range(sn): sum += cnt[k]*(26-k) print(sum) except: break