样例过了，2个数据全WA求dalao帮看看

#include<bits/stdc++.h>
using namespace std;
int n;
string a,b;
int main(){
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a>>b;
		int la=a.size(),lb=b.size();
		if(la==lb){
			int d=0;
			for(int j=0;j<la;j++)
				if(a[j]!=b[j]) d++;
			if(d<=1) cout<<"similar";
			else cout<<"not similar";
			cout<<endl;
			continue;
		}
		if(la+1==lb){
			int d=0,f=0;
			for(int j=0;j<la;j++){
				if(a[j]!=b[j+d]) d++;
				if(d>1){f=1;break;}
			}
			if(f) cout<<"not similar";
			else cout<<"similar";
			cout<<endl;
			continue;
		}
		if(lb+1==la){
			int d=0,f=0;
			for(int j=0;j<lb;j++){
				if(b[j]!=a[j+d]) d++;
				if(d>1){f=1;break;}
			}
			if(f) cout<<"not similar";
			else cout<<"similar";
			cout<<endl;
			continue;
		}
	}	
	return 0;
}