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/*
The code here is not great, but I don't feel like cleaning it up
*/
#include <iostream>
#include <cstdint>
#include <algorithm>
#include <string>
#include <string_view>
#include <vector>
#include <set>
using namespace std;
class Direction {
public:
const int U, R;
Direction(char c) :
U{c == 'v' ? 1 : (c == '^' ? -1 : 0)},
R{c == '>' ? 1 : (c == '<' ? -1 : 0)} {}
Direction(const int i, const int j) : U{i}, R{j} {}
Direction turnright() const {
return turn(-1, 0);
}
Direction turnleft() const {
return turn(1, 0);
}
bool operator<(const Direction& d) const { // For set<Direction>
return this->U < d.U || (this->U == d.U && this->R < d.R);
}
private:
Direction turn(int64_t sin, int64_t cos) const {
return Direction(cos * U - sin * R, sin * U + cos * R);
}
};
class Position {
public:
int64_t i, j;
Position() : Position(0, 0) {}
Position(int64_t a, int64_t b) : i{a}, j{b} {}
Position step(const Direction d) const {
return Position(i+d.U, j+d.R);
}
};
const Direction all_directions[] = {
Direction(1, 0), Direction(-1, 0), Direction(0, 1), Direction(0, -1)
};
class Board {
public:
int64_t N, M;
Position robot;
Board(const vector<string>& lines) :
N{static_cast<int64_t>(lines.size())},
M{static_cast<int64_t>(lines[0].size())},
cells(M*N)
{
for (int64_t i = 0; i < N; i++) {
for (int64_t j = 0; j < M; j++) {
cells[M*i+j] = lines[i][j];
if (lines[i][j] == '@')
robot = Position(i, j);
}
}
}
char& operator[](const Position p) {
if (const auto c = coord(p); c == -1)
return out_of_bound;
else
return cells[c];
}
void move_robot(const Direction d) {
if (move(robot, d))
robot = robot.step(d);
}
int64_t gps() {
int64_t tot = 0;
for (Position p(0, 0); p.i < N; p.i++)
for (p.j = 0; p.j < M; p.j++)
if ((*this)[p] == '[')
tot += 100*p.i + p.j;
return tot;
}
void print() {
for (Position p(0, 0); p.i < N; p.i++) {
for (p.j = 0; p.j < M; p.j++)
cout << (*this)[p];
cout << endl;
}
}
private:
char out_of_bound = '$';
vector<char> cells;
int64_t coord(const Position p) const {
auto [i, j] = p;
return i >= N || i < 0 || j >= M || j < 0 ? -1 : M * i + j;
}
bool move(Position p, Direction d) {
return d.U == 0 ? move_h(p, d) : move_v(p, d);
}
bool move_h(Position p, Direction d) {
auto q = p.step(d);
switch ((*this)[q]) {
case '.':
(*this)[q] = (*this)[p];
(*this)[p] = '.';
return true;
case '[':
case ']':
return move(q, d) ? move(p, d) : false;
default:
return false;
}
}
bool move_v(Position p, Direction d) {
if (!isfree_v(p, d))
return false;
auto q = p.step(d);
if ((*this)[q] == '[') {
move_v(q, d);
move_v(q.step(Direction('>')), d);
}
if ((*this)[q] == ']') {
move_v(q, d);
move_v(q.step(Direction('<')), d);
}
(*this)[q] = (*this)[p];
(*this)[p] = '.';
return true;
}
bool isfree_v(Position p, Direction d) {
auto q = p.step(d);
switch ((*this)[q]) {
case '.':
return true;
case ']':
return isfree_v(q, d) &&
isfree_v(q.step(Direction('<')), d);
case '[':
return isfree_v(q, d) &&
isfree_v(q.step(Direction('>')), d);
default:
return false;
}
if ((*this)[q] == '.')
return true;
}
};
int main() {
string line;
vector<string> lines;
for (getline(cin, line); line.size() > 0; getline(cin, line)) {
string wideline = "";
for (const auto& c : line) {
switch (c) {
case 'O':
wideline += "[]";
break;
case '@':
wideline += "@.";
break;
default:
wideline += c;
wideline += c;
break;
}
}
lines.push_back(wideline);
}
Board board(lines);
while (getline(cin, line))
for (const auto& c : line)
board.move_robot(Direction(c));
cout << board.gps() << endl;
return 0;
}
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