编辑代码

#include <iostream>
#include <cstdio>
using namespace std;



int fendi(int length, int width)
{
    if (length < width || length <= 0 || width <= 0)return 20;
    int smlwidth = width;
    while (length % smlwidth != 0) {
        smlwidth = length%width;
        length = width;
        width = smlwidth;
    }
    return smlwidth;
}

int main()
{
    int len, width;
    cin >> len >> width;

    cout << "土地大小 " << fendi(len, width) << endl;

    return 0;
}