程序设计实验一

#include <iostream>
#include <string.h>
#include <stack>
#include <queue>
#include <algorithm>
#include <cstdio>
#include <cstdlib>
#define ll long long//是ll在前面

using namespace std;

void gcd(ll a,ll b)//记得全部都要用ll
{
    ll t=0,x=a,y=b;//这里要先保存a，b数据
    while(x%y!=0)//这里记得用while
    {
        t=x%y;
        x=y;
        y=t;
    }
    cout<<a*b/y<<endl;
}

int main()
{
    ll m;
    cin>>m;
    ll a,b;
    while(m--)
    {
        cin>>a>>b;
        gcd(a,b);
    }
    cout<<"group 1 done"<<endl;
    while(cin>>a>>b&&a&&b)
    gcd(a,b);
    cout<<"group 2 done"<<endl;
    while(cin>>a>>b)
    gcd(a,b);
    cout<<"group 3 done"<<endl;
    return 0;
}