题解

#include<iostream>
#include<cmath>
using namespace std;
int main(){
    int a,b,c;
    cin>>a>>b;
    for(int i=a;i>0;i--){
        if(a%i==0&&b%i==0){
            cout<<"GCD="<<i<<endl;
            c=i;
            break;
        }
    }
    cout<<"LCM="<<a*b/c;
    return 0;
}