c++

#include<bits/stdc++.h>
using namespace std;
int main(){
	int t;
	cin>>t;
	while(t--){
		string a,b;
		cin>>a>>b;
		int cnt=0,cc=0;
		if(a==b){// 1
			cout<<"similar\n";continue;
		}
		if(a.size()==b.size()){// 2
			for(int i=0;i<a.size();i++){
				if(a[i]==b[i])cnt++;
			}
			if(cnt+1==a.size()||cnt==a.size()){
				cout<<"similar\n";
			}
			else cout<<"not similar\n";
		}
		else if(a.size()+1==b.size()){// 3
			for(int i=0;i<b.size();i++){
				if(a[cc]==b[i])cnt++,cc++;
			}
			if(cnt==a.size()){
				cout<<"similar\n";
			}
			else cout<<"not similar\n";
		}
		else if(a.size()-1==b.size()){
			swap(a,b);
			for(int i=0;i<b.size();i++){
				if(a[cc]==b[i])cnt++,cc++;
			}
			if(cnt==a.size()){
				cout<<"similar\n";
			}
			else cout<<"not similar\n";
		}
		else{
			cout<<"not similar\n";
		}
	} 
	return 0;
}