题解 | 数颜色

color = list(input())
n =len(color)
list1 =[]
count_r =0
count_g =0
count_b =0
for i in range(0,n):   
    if(color[i] == 'R'):
        count_r +=1
        i+=1
    elif(color[i] == 'G'):
        count_g +=1
        i+=1
    else:
        count_b +=1
        i+=1
    list1=[count_r,count_g,count_b]
print(f'({count_r},{count_g},{count_b})')