#!/usr/bin/env python3
import sys
import os

def parse():
    G = []
    moves = []
    rob = None
    for l in sys.stdin:
        if l[0] == "#":
            G.append([c for c in l.strip()])
        if l[0] in {">", "<", "^", "v"}:
            moves += [c for c in l.strip()]
    for i in range(len(G)):
        for j in range(len(G[0])):
            if G[i][j] == "@":
                rob = (i, j)
    return G, moves, rob

def debug(msg):
    if os.getenv("DEBUG"):
        print(msg)

def pprint(G):
    for row in G:
         debug("".join(row))

velocity = {
    "^": (-1, 0),
    ">": (0, 1),
    "v": (1, 0),
    "<": (0, -1),
}

def get(G, pos):
    if pos[0] < 0 or pos[0] > len(G) or pos[1] < 0 or pos[1] > len(G[0]):
        return None
    return G[pos[0]][pos[1]]

def step(pos, move):
    dy, dx = velocity[move]
    return (pos[0] + dy, pos[1] + dx)

def hasopen(G, move, rob):
    curr = step(rob, move)
    while get(G, curr):
        if get(G, curr) == ".":
            return True
        if get(G, curr) == "#":
            return False
        curr = step(curr, move)
    return False

def move(G, move, rob):
    dy, dx = velocity[move]
    if not hasopen(G, move, rob):
        return rob

    # we have an open spot to shift into
    curr = rob
    cval = get(G, curr)
    while True:
        next = step(curr, move)
        nval = get(G, next)
        G[next[0]][next[1]] = cval
        cval = nval
        curr = next
        if nval == ".":
            break
    G[rob[0]][rob[1]] = "."
    return step(rob, move)

def score(G):
    s = 0
    for i in range(len(G)):
        for j in range(len(G[0])):
            if G[i][j] == "O":
                s += 100 * i + j
    return s

if __name__ == '__main__':
    G, moves, rob = parse()
    pprint(G)
    for m in moves:
        debug(f"Move {m}:")
        rob = move(G, m, rob)
        pprint(G)
        debug("")
    print(score(G))