30pts!求条

#include<bits/stdc++.h>
using namespace std;
#define int unsigned long long
int t,n,m;
inline int read() {
	int 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 << 3) + (x << 1) + (ch ^ 48);
		ch = getchar();
	}
	return x * f;
}
inline void write(int x) {
	if (x < 0) {
		putchar('-');
		x = -x;
	}
	if (x > 9)
		write(x / 10);
	putchar(x % 10 + '0');
}
signed main() {
	ios::sync_with_stdio(0);
	cin.tie(0), cout.tie(0);
	cin>>t;
	while(t--){
		cin>>n>>m;
		int s=(n+1)*n/2;
		if(s>m) cout<<"-1 -1\n";
		else{
			int diff=m-s;
			cout<<n+diff-1<<" ";
			int other=diff%n;
			cout<<n+other-1<<"\n";
		}
	}
	return 0;
}