func_code_string: #include<bits/stdc++.h>   #define int long long   using namespace std;   const int N=1e5+5;   #define pb push_back   int n,m,t;   int i,j,k;   int a[N];   int b[N],c[N];   vector<int> ans;   vector<int>v[N];   int vis[N];       signed main()   {       int t;       cin>>t;       while(t--){        int n;     cin>>n;     int m=(n-1);     int f=sqrt(2*m+1);    // cout<<f<<endl;     if(f<3) cout<<0<<endl;     else cout<<(f-1)/2<<endl;    }       return 0;   }