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:
                if (cb - b) % 2 == 0:
                    res += '>'
                else:
                    res += '<'
            cb += 1
        else:
            res = ''
            if ca < a:
                res += '^'
            else:
                if (ca - a) % 2 == 0:
                    res += '^'
                else:
                    res += 'v'
            if cb < b:
                res += '>'
            else:
                if (cb - b) % 2 == 0:
                    res += '>'
                else:
                    res += '<'
            print(res)
            ca += 1
            cb += 1
else:
    for i in range(t):
        res = ''
        if i == 0:
            if aa == t:
                res += '^'
                ca += 1
            if bb == t:
                res += '>'
                cb += 1
        else:
            if ca < a:
                res += '^'
            else:
                if (ca - a) % 2 == 0:
                    res += '^'
                else:
                    res += 'v'
            if cb < b:
                res += '>'
            else:
                if (cb - b) % 2 == 0:
                    res += '>'
                else:
                    res += '<'
            ca += 1
            cb += 1
        print(res)