T,A,B = map(int, input().split())
if A == 0 and B == 0:
    if T > 1:
        print('^')
        for i in range(1,T-1):
            if i%2 != 0:
                print('>')
            else:
                print('<')
        if T%2 != 0:
            print('<v')
        else:
            print('v')
    else:
        print('NO')
    
elif T < max(A, B):
    print('NO')
else:
    if A == B:
        print('YES')
        for _ in range(A-1):
            print('>^')
        ud = abs(A - T)
        for i in range(1, ud+1):
            if i%2 != 0:
                print('^')
            else:
                print('v')
        if ud%2 != 0:
            print('>')
        else:
            print('>^')
    elif A > B:
        print('YES')
        for _ in range(B):
            print('>^')
        for __ in range(A-B-1):
            print('^')
        rl = abs(A-T)
        for i in range(1, rl+1):
            if i%2 != 0:
                print('>')
            else:
                print('<')
        if rl%2 != 0:
            print('^<')
        else:
            print('^')
    else:
        print('YES')
        for _ in range(A):
            print('>^')
        for __ in range(B-A-1):
            print('>')
        du = abs(B-T)
        for i in range(1, du+1):
            if i%2 != 0:
                print('v')
            else:
                print('^')
        if du%2 != 0:
            print('>^')
        else:
            print('>')