cout<<"answer "#include <bits/stdc++.h>
using namespace std;
int main()
{
    // ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cout<<"query 0\n"; fflush(stdout);
    long long x; cin>>x;
    long long y=0;
    string ans;
    for(long long i=1 ; i<=18 ; i++){
        int l=1,r=9,z=10;
        while(l<=r){
            int mid=(l+r)/2;
            cout<<"query "<<mid*pow(10,i-1)<<endl; fflush(stdout);
            long long y; cin>>y;
            if(y<x+mid)r=mid-1,z=mid;
            else l=mid+1;
        }
        ans.push_back(10-z+'0');
        // cout<<ans<<" ";
    }
    reverse(ans.begin(),ans.end());
    bool f=0;
    cout<<"answer ";
    for(int i=0 ; i<18 ; i++){
        if(ans[i]>='1' && ans[i]<='9')f=1;
        // if(ans[i]<'0')ans[i]='0';
        if(f) cout<<ans[i];
    }
    // cout<<"answer "<<ans<<endl; fflush(stdout);
}

answer.code:1:16: error: stray ‘#’ in program
    1 | cout<<"answer "#include <bits/stdc++.h>
      |                ^
answer.code:1:1: error: ‘cout’ does not name a type
    1 | cout<<"answer "#include <bits/stdc++.h>
      | ^~~~
answer.code: In function ‘int main()’:
answer.code:6:5: error: ‘cout’ was not declared in this scope
    6 |     cout<<"query 0\n"; fflush(stdout);
      |     ^~~~
answer.code:6:31: error: ‘stdout’ was not declared in this scope
    6 |     cout<<"query 0\n"; fflush(stdout);
      |                               ^~~~~~
answer.code:1:1: note: ‘stdout’ is defined in header ‘<cstdio>’; did you forget to ‘#include <cstdio>’?
  +++ |+#include <cstdio>
    1 | cout<<"answer "#include <bits/stdc++.h>
answer.code:6:24: error: ‘fflush’ was not declared in this scope
    6 |     cout<<"query 0\n"; fflush(stdout);
      |                        ^~~~~~
answer.code:7:18: error: ‘cin’ was not declared in this scope
    7 |     long long x; cin>>x;
      |                  ^~~
answer.code:9:5: error: ‘string’ was not declared in this scope
    9 |     string ans;
      |     ^~~~~~
answer.code:14:33: error: ‘pow’ was not declared in this scope
   14 |             cout<<"query "<<mid*pow(10,i-1)<<endl; fflush(stdout);
      |                                 ^~~
answer.code:14:46: error: ‘endl’ was not declared in this scope
   14 |             cout<<"query "<<mid*pow(10,i-1)<<endl; fflush(stdout);
      |                                              ^~~~
answer.code:19:9: error: ‘ans’ was not declared in this scope
   19 |         ans.push_back(10-z+'0');
      |         ^~~
answer.code:22:13: error: ‘ans’ was not declared in this scope
   22 |     reverse(ans.begin(),ans.end());
      |             ^~~
answer.code:22:5: error: ‘reverse’ was not declared in this scope
   22 |     reverse(ans.begin(),ans.end());
      |     ^~~~~~~