#include<bits/stdc++.h> 
using namespace std;
int k,flag,yyf,QWQ,l,r,AWA,i,t,zishu;
int whatbase(char a[],int n)
{
	zishu=strlen(a);
	AWA=0;
	for(int i=0; i<zishu; i++){
		if(a[i]>='0'&&a[i]<='9') t=a[i]-'0';
		
		else if (n>=11&&(a[i]>='A'+n-10)) t=a[i]-'A'+10;
		AWA=AWA*n+t;
	}
	return AWA;
}
int main()
{
	char x[1001],y[1001];
	cin>>k;
	while(k!=0)
	{
		k--;
		cin>>x>>y;
		for(int i=10; i<=15000; i++)
		{
			yyf=whatbase(x,i);
			l=10,r=15000;
			while(l<=r)
			{
				int mid=(l+r)/2;
				QWQ=whatbase(y,mid);
				if(QWQ==yyf){cout<<i<<" "<<mid<<endl; break;}
				else 
					if(QWQ<yyf) 
						l=mid+1;
				else 
					r=mid-1;
			}
			if(yyf==QWQ) break;
		}
	}
} 

这些代码有人可以解释一下吗，蒟蒻看不懂，这是我们线下集训的题目