RE?

#include <bits/stdc++.h>
using namespace std;
int main()
{
	string a,b;
	getline(cin,a);
	getline(cin,b);
	string aa,bb;
	int lena=a.size(),lenb=b.size();
	for(int i=0;i<lena;i++)
	{
		if(a[i]==' ')
		{
			continue;
		}
		else if(a[i]>='a' and a[i]<='z')
		{
			aa=aa+a[i];
            aa[i]=aa[i]-32;
		}
        else
        {
            aa=aa+a[i];
        }
	} 
	for(int i=0;i<lenb;i++)
	{
		if(b[i]==' ')
		{
			continue;
		}
		else if(b[i]>='a' and a[i]<='z')
		{
			bb=bb+b[i];
            bb[i]=bb[i]-32;
		}
        else
        {
            bb=bb+b[i];
        }
	}
	if(aa==bb)
	{
		cout<<"YES";
	 } 
	else
	{
		cout<<"NO";
	}
}

上面的RE

#include <bits/stdc++.h>
using namespace std;
int main()
{
	string a,b;
	getline(cin,a);
	getline(cin,b);
	int lena=a.size(),lenb=b.size();
	for(int i=0;i<lena;i++)
	{
		if(a[i]==' ')
		{
			continue;
		}
		else if(a[i]>='a' and a[i]<='z')
		{
            a[i]=a[i]-32;
		}
	} 
	for(int i=0;i<lenb;i++)
	{
		if(b[i]==' ')
		{
			continue;
		}
		else if(b[i]>='a' and a[i]<='z')
		{
			b[i]=b[i]-32;
		}
	}
	if(a==b)
	{
		cout<<"NO";
	 } 
	else
	{
		cout<<"YES";
	}
}

这个半对