t,a,b = map(int,input().split())
if t < max(a,b):
    print("NO")
    exit()
print("YES")
d = dict(zip(range(8),[">",">^","^","^<","<","<v","v","v>",]))

def f(a,b):
    if a>0 and b==0: return 0
    if a>0 and b>0: return 1
    if a==0 and b>0: return 2
    if a<0 and b>0: return 3
    if a<0 and b==0: return 4
    if a<0 and b<0: return 5
    if a==0 and b<0: return 6
    if a>0 and b<0: return 7
    if a==b==0: return 8

while t > 2:
    if a >= 0 and b >= 0:
        c = f(a,b)
        print(d[c%8])
    if a < 0: a += 1
    elif a > 0: a -= 1
    if b < 0: b += 1
    elif b > 0: b -= 1
    if c==8:
        a -= 1
    t -= 1

if t==2:
    c = -1
    if a==1 and b==0:
        c = 2
        b -= 1
    elif a==1 and b>0:
        c = 0
        a -= 1
    elif a==0 and b==1:
        c = 0
        a -= 1
    elif a==-1 and b==1:
        c = 2
        b -= 1
    elif a==-1 and b==0:
        c = 2
        b -= 1
    elif a==-1 and b==-1:
        c = 6
        b += 1
    elif a==0 and b==-1:
        c = 0
        a -= 1
    elif a==1 and b==-1:
        c = 0
        a -= 1
    else:
        c = f(a,b)
        if a < 0: a += 1
        elif a > 0: a -= 1
        if b < 0: b += 1
        elif b > 0: b -= 1
        if c==8:
            a -= 1
        
    #print(c)
    print(d[c%8])

print(d[f(a,b)])