date_delta_ez.py

y, m, d = map(int, input().translate(str.maketrans(dict.fromkeys('年月日', ' '))).split())
print(f'{y}年{m}月{d}日', end=' ==> ')

days = [
    31, (28, 29)[(y % 4 == 0 and y % 100 != 0) or y % 400 == 0],
    31, 30, 31, 30, 31, 31, 30, 31, 30, 31
]

if d + 7 > days[m - 1]:
    d += 7 - days[m - 1]
    if m == 12:
        y += 1
        m = 1
    else:
        m += 1
else:
    d += 7

print(f'{y}年{m}月{d}日')