[백준 BAEKJOON] 5622번 다이얼

소스 코드

dial=input()     
str_list=["","","ABC","DEF","GHI","JKL","MNO","PQRS","TUV","WXYZ"] 
sum_num=0 
for i in dial: 
    for j in str_list:
        if i in j: 
            sum_num+=num_list.index(j)+1 
print(sum_num)