#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")

#define rd_init() char*rp=({char*mmap();mmap(0l,1l<<25,1,2,0,0ll);})
#define rd() ({int _v=0,_c;while(_c=*rp++-48,_c>=0)_v=_v*10+_c;_v;})

int main(){
	rd_init();
	int n=rd();
	char*s=rp;
	char*t=rp+(n+1);
	for(int a,b;a=*s++,b=*t++,a!=10;){
		if(a-b){
			goto differ;
		}
	}
	goto yes;
	differ:;
	--s;
	--t;
	int ab=0,bc=0;
	for(int a,b;a=*s++,b=*t++,a!=10;){
		if(a>b){
			goto no;
		}
		ab+=a=='A'&&b=='B';
		bc+=a=='B'&&b=='C';
	}
	if(ab&&ab==bc){
		yes:;
		write(1,"Yes",3);
	}else{
		no:;
		write(1,"No",2);
	}
	_exit(0);
}