#include<bits/stdc++.h>
  
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
#define sz(a) ((int)a.size())
#define pb push_back
#define lson (rt << 1)
#define rson (rt << 1 | 1)
#define gmid (l + r >> 1)
const int maxn = 1e3 + 5;
const int inf = 0x3f3f3f3f;
const int mod = 1e9 + 7;
 
int dp[maxn][maxn];
int n;

int gcd(int a, int b){

    return b ? gcd(b, a % b) : a;
}

int main(){
 
    ios::sync_with_stdio(0); cin.tie(0);
    for(int i = 1; i <= 1000; ++i){

        for(int j = 1; j <= 1000; ++j){

            dp[i][j] = (gcd(i, j) == 1) + max(dp[i - 1][j], dp[i][j - 1]);
        }
    }
    int t; cin >> t;
    while(t--){

        int a, b; cin >> a >> b;
        cout << dp[a][b] << "\n";
    }
    return 0;
}