Lowest Common Multiple Plus（hdu2028）

思考： 乘法爆咋数据。把int换成unsigned就过了，同时%d换成%u。求最大公约数和最小公倍数。

#include<stdio.h>
int gcd(unsigned x, unsigned y)
{
    unsigned r;
    while ((r = x%y) != )
    {
        x = y;
        y = r;
    }
    return y;
}
int lcm(unsigned x, unsigned y)
{
    unsigned d;
    d = gcd(x, y);
    return (x*y / d);
}
int main()
{
    int  n;
    char d;
    while (scanf_s("%d%c",&n,&d)!=EOF)
    {
        unsigned d1 = ;
        for (int k = ; k <= n; k++)
        {
            unsigned  a;
            scanf_s("%u", &a);
            d1 = lcm(d1, a);
        }
        printf("%u\n", d1);
    }
}