# -*- coding: utf-8 -*-
"""
No.232 めぐるはめぐる (2)
https://yukicoder.me/problems/no/232

"""
import sys
from sys import stdin
input = stdin.readline

cx = 0
cy = 0

def last_step(steps, gx, gy):
    nx, ny = '', ''
    if cx < gx:
        nx = '>'
    elif cx > gx:
        nx = '<'
    if cy < gy:
        ny = '^'
    elif cy > gy:
        ny = 'v'
    steps.append('{}{}'.format(nx, ny))


def guruguru(steps, gx, gy):
    global cx, cy
    dx = gx - cx
    dy = gy - cy
    if dx == 1 and dy == 1:
        steps.append('^')
        cy += 1
    elif dx == 1 and dy == 0:
        steps.append('^')
        cy += 1
    elif dx == 1 and dy == -1:
        steps.append('>')
        cx += 1
    elif dx == 0 and dy == -1:
        steps.append('>')
        cx += 1
    elif dx == -1 and dy == -1:
        steps.append('v')
        cy -= 1
    elif dx == -1 and dy == 0:
        steps.append('v')
        cy -= 1
    elif dx == -1 and dy == 1:
        steps.append('<')
        cx -= 1
    else:
        steps.append('<')
        cx -= 1

def one_step_closer(steps, gx, gy):
    global cx, cy
    nx, ny = '', ''
    dx = gx - cx
    dy = gy - cy
    if max(abs(dx), abs(dy)) <= 1:
        guruguru(steps, gx, gy)
    else:
        if dx > 0:
            nx = '>'
            cx += 1
        elif dx < 0:
            nx = '<'
            cx -= 1
        if dy > 0:
            ny = '^'
            cy += 1
        elif dy < 0:
            ny = 'v'
            cy -= 1
        steps.append('{}{}'.format(nx, ny))


def solve(T, A, B):
    ans = []
    global cx, cy
    cx, cy = 0, 0
    gx, gy = B, A
    if gx > T or gy > T:
        return ans
    if cx == gx and cy == gy:
        if T == 1:
            return ans
        else:
            ans.append('{}{}'.format('>', ''))
            cx += 1
            T -= 1
    while T:
        if T == 1:
            last_step(ans, gx, gy)
            return ans
        else:
            one_step_closer(ans, gx, gy)
            T -= 1


def main(args):
    T, A, B = map(int, input().split())
    ans = solve(T, A, B)
    if not ans:
        print('NO')
    else:
        print('YES')
        print(*ans, sep='\n')


if __name__ == '__main__':
    main(sys.argv[1:])