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- #include <bits/stdc++.h>
- using namespace std;
- #define ll long long
- #define test int t; cin>>t; for(int cs=1;cs<=t;cs++)
- int main()
- {
- ios_base::sync_with_stdio(0);
- cin.tie(0);
- cout.tie(0);
- map<ll,ll>x;
- map<ll,ll>::iterator it;
- ll c,d,e,f,i,j=0,k=0;
- string a;
- test
- {
- cin>>a>>c;
- if(a=="insert")
- {
- x[c]++;
- if(x[c]>=2)
- {
- k++;
- }
- else j++;
- }
- else
- {
- if(x[c])
- {
- x[c]--;
- if(x[c]==0) j--;
- else if(x[c]==1) k--;
- }
- }
- if(j>=2 && k) cout<<"both"<<endl;
- else if(k && j<2) cout<<"homo"<<endl;
- else if(j>=2 && k==0) cout<<"hetero"<<endl;
- else cout<<"neither"<<endl;
- }
- return 0;
- }
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