#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <string>
#include <algorithm>

using namespace std;

//namaega184
 
int main(){ 
	int t,a,b;scanf("%d%d%d",&t,&a,&b);
	char vertical[3]="><",horizontal[3]="^v";bool ai=a<0?1:0,bi=b<0?1:0;
	if(a<0)a=-a;if(b<0)b=-b;int mlen=max(a,b);
	if(t<mlen&&(t==1&&!a&&!b)){printf("NO\n");return 0;}
	printf("YES\n");
	int rc=min(a,b),llen=t-mlen;
	llen/=2;for(int i=0;i<llen;i++)printf(">\n<\n");
	if((t-mlen)%2){ 
		if(a<b){printf("%c\n",horizontal[a?(a++,ai):(a+=1,!ai)]);}
		else{printf("%c\n",vertical[b?(b--,bi):(b++,!bi)]);}
	} 
	for(int i=0;i<rc;i++)printf("%c%c\n",horizontal[ai],vertical[bi]);
	rc=mlen-rc;char c=a<b?vertical[bi]:horizontal[ai];
	for(int i=0;i<rc;i++)printf("%c\n",c);
	return 0;
}