随便推了个乱七八糟的东西，很好奇这是怎么过的

#include<bits/stdc++.h>
using namespace std;
#define LL long long
#define R register
namespace IO{
	char ibuf[(1<<20)+1],*iS,*iT;
	#if ONLINE_JUDGE
	#define gh() (iS==iT?iT=(iS=ibuf)+fread(ibuf,1,(1<<20)+1,stdin),(iS==iT?EOF:*iS++):*iS++)
 	#else
	#define gh() getchar()
	#endif
	inline long long read(){
		R char ch=gh();
		R long long x=0;
		R char t=0;
		while(ch<'0'||ch>'9')   t|=ch=='-',ch=gh();
		while(ch>='0'&&ch<='9') x=x*10+(ch^48),ch=gh();
		return t?-x:x;
	}
}
using IO::read;
void write(long long x) {
	if(x<0){
		putchar('-');
		write(-x);
		return;
	}
	if(x>=10)write(x/10);
	putchar(x%10+'0');
}
long long x,y,n,m,t,f;
signed main(){
    t=read();
    while(t--){
        f=-1;
        n=read();m=read();
        if(n<m){
            puts("-1");
            continue;
        }
        y=n-m;x=m;
        if(y&&x%y==m){
            write(x);
            putchar(' ');
            write(y);
            puts("");
            continue;
        }
        for(long long i=1;i*i*i*i*i<=n;i++)//原本是i*i<=n
            if(n-m==(1+(n-i)/i)*i){
                write(n-i);
                putchar(' ');
                write(i);
                puts("");
                f=0;
                break;
            }
        if(f) puts("-1");
    }
    return 0;
}