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［AtCoder］ABC-412｜A - Task Failed Successfully

に公開
Python
AtCoder
abc
tech

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提出結果

def getInt():
    return int(input())


def getIntListRow(N):
    return [list(map(int, input().split())) for _ in range(N)]


def main():
    N = getInt()
    AB = getIntListRow(N)

    ans = 0
    for a, b in AB:
        if a < b:
            ans += 1
    print(ans)


if __name__ == "__main__":
    main()

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