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| #include <bits/stdc++.h>
#define ios ios::sync_with_stdio(0),cin.tie(0)
using namespace std;
int n,m,tree[3000];
int drop(int id){
if(id>=(1<<(n-1)))return id;
tree[id]=!tree[id];
if(!tree[id])return drop(2*id+1);
else return drop(2*id);
}
int main(){
ios;
int t;cin>>t;
while(t--){
int ans = 0;cin>>n>>m;
memset(tree,0,sizeof(tree));
for(int i=0;i<m;i++){
ans = drop(1);
}
cout<<ans<<endl;
}
}
|