#!/usr/bin/env python3
import sys

def parse():
    G = []
    guard = (None, None)
    r = 0
    for l in sys.stdin:
        G.append([x for x in l.strip()])
        if "^" in l:
            guard = (r, l.index("^"))
        r += 1

    if not guard[0]:
        raise Exception("Unable to find Guard")

    return G, guard

def turn(dir):
    if dir == "^":
        return ">"
    elif dir == ">":
        return "v"
    elif dir == "v":
        return "<"
    elif dir == "<":
        return "^"
    else:
        raise Exception(f"Bad direction {dir}")

def move(G, guard, dir):
    if dir == "^":
        next = (guard[0] - 1, guard[1])
    elif dir == "v":
        next = (guard[0] + 1, guard[1])
    elif dir == ">":
        next = (guard[0], guard[1] + 1)
    elif dir == "<":
        next = (guard[0], guard[1] - 1)
    else:
        raise Exception(f"Bad direction {dir}")

    if next[0] >= len(G) or next[0] < 0 or next[1] >= len(G[0]) or next[1] < 0:
        # off the map
        return ((None, None), None)

    if G[next[0]][next[1]] == "#":
        dir = turn(dir)
        return (guard, dir)

    return (next, dir)

def pprint(G, guard, dir):
    for i in range(len(G)):
        for j in range(len(G[0])):
            if (i, j) == guard:
                print(dir, end='')
            else:
                print(G[i][j], end='')
        print("")

if __name__ == '__main__':
    G, guard = parse()
    dir = "^"

    seen = set()
    while guard[0] is not None:
        seen.add(guard)
        guard, dir = move(G, guard, dir)

    print(len(seen))