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

#define rd_skip() while(*rp++>=48)
#define rd(v) long v=0;{long _c;while(_c=*rp++-48,_c>=0)v=v*10+_c;}
#define rep(v,e) for(long v=0;v<e;++v)
#define chmax(v,a) (v=v>=a?v:a)

char*mmap();
char wbuf[1<<25];

int main(){
	char*rp=mmap(0l,1l<<25,1,2,0,0ll);
	char*wp=wbuf;

	rd_skip();
	while(*rp){
		long s=0,m=0;
		rd(n);
		rep(i,n){
			rd(a);
			s+=a;
			chmax(m,a);
		}
		if(s%3||m>s/3){
			*(int*)wp='\noN';
			wp+=3;
		}else{
			*(int*)wp='\nseY';
			wp+=4;
		}
	}

	write(1,wbuf,wp-wbuf);
	_exit(0);
}