题解

#include<iostream>
#include<cmath>
using namespace std;
string s1,s2,a,b;
int main(){
    getline(cin,s1);
    getline(cin,s2);
    for(int i=0;i<=max(s1.size(),s2.size());i++){
        if(s1[i]>='A' && s1[i]<='Z'){
            a+=s1[i]+('a'-'A');
        }
        else if(s1[i]>='a' && s1[i]<='z'){
            a+=s1[i];
        }
        if(s2[i]>='A' && s2[i]<='Z'){
            b+=s2[i]+('a'-'A');
        }
        else if(s2[i]>='a' && s2[i]<='z'){
            b+=s2[i];
        }
    }
    if(a==b){
        cout<<"YES";
    }
    else{
        cout<<"NO";
    }
}