我的代码怎么一片WA

#include<bits/stdc++.h>

using namespace std;

int main()
{
    int begin, end = 0;
    cin >> begin >> end;
    for (int i = begin; i <= end; i++)
    {
        if (i % 4 == 0 || i % 100 == 0 || i % 400 == 0)
        {
            cout << i << endl;
        }
    }
    return 0;
}