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12782번: 비트 우정지수 ↗

Solutions

Python 3
249 B | 249 chars
for t in range(int(input())):
    a,b = input().split()
    cnt1,cnt2 = 0,0
    for i in range(len(a)):
        if a[i] != b[i]:
            if b[i] == '0':
                cnt1+=1
            else:
                cnt2+=1

    print(max(cnt1,cnt2))