题解 | #两数之和#

a = eval(input())
s,sum1 = a[0],a[1]
for i in range(len(s)):
    if sum1 - s[i] in s[i+1:]:
        j = int(s[i+1:].index(sum1-s[i])+2+i)
        print("["+str(i+1)+","+str(j)+"]")