B流浪地球

#include <bits/stdc++.h>
#define ll long long
using namespace std;
double c =  2997924.58;
ll quickmul(ll a,ll b)
{
    ll ret=1;
    for(; b ; b >>=1 ,a =(ll) a * a )
        if((b & 1))
            ret=ret * a ;
    return ret;
} 
  
void solve(double x,double y)
{
    double tp = (2*x+y);

    if(y>=c){
        printf("0\n");
        return ;
    }
    int cnt = 1;
    while(tp<c)
    {
        tp = 2*tp+y;
        cnt++;
    }
    printf("%d\n",cnt);
}
int main()
{
    double n,x,y;
    scanf("%lf",&n);
    while(n--){
        scanf("%lf %lf",&x,&y);
        solve(x,y);
    }
    return 0;
}