t, a, b = map(int, input().split())
if a > t or b > t:
    print("NO")
    exit()
print("YES")
aa = t - (t - a) % 2
bb = t - (t - b) % 2
ca, cb = 0, 0
if aa < t and bb < t:
    for i in range(t):
        if i == 0:
            print('^')
            ca += 1
        elif i == t - 1:
            if cb < b:
                print('>')
            else:
                print('<')
            cb += 1
        else:
            res = ''
            if ca <= a:
                res += '^'
            else:
                res += 'v'
            if cb <= b:
                res += '>'
            else:
                res += '<'
            print(res)
            ca += 1
            cb += 1
else:
    for i in range(t):
        res = ''
        if i == 0:
            if a == t:
                res += '^'
            if b == t:
                res += '>'
        else:
            if ca <= a:
                res += '^'
            else:
                res += 'v'
            if cb <= b:
                res += '>'
            else:
                res += '<'
        print(res)
        ca += 1
        cb += 1