// yukicoder: No.232 めぐるはめぐる (2)
// bal4u 2019.8.25

#include <stdio.h>

//// 高速入力
#if 1
#define gc() getchar_unlocked()
#define pc(c) putchar_unlocked(c)
#else
#define gc() getchar()
#define pc(c) putchar(c)
#endif

int in() {   // 非負整数の入力
	int n = 0, c = gc();
	do n = 10 * n + (c & 0xf); while ((c = gc()) >= '0');
	return n;
}

void outs(char *s) { while (*s) pc(*s++); pc('\n'); }

#define MIN(a, b)  ((a)<=(b)?(a):(b))

int main()
{
	int i, T, A, B, t;

	T = in(), A = in(), B = in();
	
	if (A > T || B > T || (T == 1 && (A | B) == 0)) outs("NO");
	else {
		outs("YES");
		if ((A | B) == 0 && (T & 1)) outs("v<"), T--, A++, B++;
		else if (A == 0 && ((T-B) & 1)) outs("v>"), T--, A++, B--;
		else if (B == 0 && ((T-A) & 1)) outs("<^"), T--, A--, B++;

		if ((T-A) & 1) outs(">"), T--, B--;
		if ((T-B) & 1) outs("^"), T--, A--;

		t = MIN(A, B);
		i = t; while (i--) outs("^>");
		A -= t, B -= t, T -= t;

		if (A >= B) {
			i = (T-A) >> 1; while (i--) outs("^"), outs("v"), T-=2;
		} else {
			i = (T-B) >> 1; while (i--) outs(">"), outs("<"), T-=2;
		}
		if (T > 0) {
			if (T == A && T == B)  while (A--) outs("^>");
			else if (T == A)  while (A--) outs("^");
			else              while (B--) outs(">");
		}
	}
	return 0;
}