T,a,b = map(int,input().split())
if a==0 and b==0:
    if T%2==0:
        print("YES")
        for _ in range(T):
            print("^")
            print("v")
    elif T==1:
        print("NO")
    else:
        print("YES")
        print("^>")
        for _ in range((T-2)//2):
            print("v")
            print("^")
        print("v")
        print("<")
elif T>=max(a,b):
    print("YES")
    for _ in range(min(a,b)-1):
        print("^>")
    if (T-max(a,b))%2==0:
        if min(a,b)>0:
            print("^>")
        if a>=b:
            for _ in range(a-b):
                print("^")
            for _ in range((T-a)//2):
                print("^")
                print("v")
        else:
            for _ in range(b-a):
                print(">")
            for _ in range((T-b)//2):
                print(">")
                print("<")
    else:
        if min(a,b)>0:
            print(">")
            print("^")
            if a>=b:
                for _ in range(a-b):
                    print("^")
                for _ in range((T-1-a)//2):
                    print("^")
                    print("v")
            elif b>a:
                for _ in range(b-a):
                    print(">")
                for _ in range((T-1-b)//2):
                    print(">")
                    print("<")
        else:
            print("^>")
            if a>0:
                for _ in range(a-1):
                    print("^")
                for _ in range((T-1-a)//2):
                    print("^")
                    print("v")
                print("<")
            else:
                for _ in range(b-1):
                    print(">")
                for _ in range((T-1-b)//2):
                    print(">")
                    print("<")
                print("v")
else:
    print("NO")