别直接抄啊

#include<bits/stdc++.h>
using namespace std;
int main(){
    int k,m,n;
    cin>>k>>m;  
    for(int i=1;i<k;i++)
    {  
        cin>>n;  
        int mt=m;  
        int nt=n; 
        int r=mt%nt; 
        while(r!=0)
        {  
            mt=nt;
            nt=r;
            r=mt%nt;
        }
        m=m/nt*n;  
    }
    cout<<m<<endl;  
    return 0;
}

我

我

#include<bits/stdc++.h>
#define ll long long//宏定义
using namespace std;
ll gcd(ll a,ll b){//两个数的大公约
    while( 1 ){
        ll r=a%b;
        if(r==0)
            break;
        a=b; b=r;
    }
    return b;
}

ll lcm(ll a,ll b){return a/gcd(a,b)*b;}//公倍
ll qscanf(){//快读
    ll x=0,f=1;
    char ch=getchar();
    while((ch<'0'||ch>'9')){
        if(ch=='-') f=-1;
        ch = getchar();
    }
    while((ch>='0'&&ch<='9')){
        x=x*10+ch-'0';
        ch = getchar();
    }
    return x*f;
}
int main(){
    ll n;n=qscanf();
    ll a[n];
    a[0]=qscanf();a[1]=qscanf();
    ll x=lcm(a[0],a[1]);
    for(int i=2;i<n;i++){//读进来就判断
        a[i]=qscanf();
        x=lcm(x,a[i]);
    }
    cout<<x;
    return 0;
}