用传统流程图、N-S流程图、伪代码等手段表示该程序：判定2000-2050年中的每一年是否为闰年，并将结果输出。

传统流程图：


N-S流程图：


伪代码：

for year = 2000 to 2050
    if (year is divisible by 4) and (year is not divisible by 100) or (year is divisible by 400) then
        output year as a leap year
    else
        output year as not a leap year