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#include <array>
#include <iostream>
#include <string>
#include <vector>
static const std::array<unsigned int, 5> pieces = {
0x3C, 0x081C08, 0x10101C, 0x04040404, 0x0C0C
};
static auto next = pieces.begin();
static auto current = *next;
static unsigned int currenty;
static void add(std::vector<unsigned char>& tet);
static bool move(std::vector<unsigned char>& tet, char dir);
static void show(const std::vector<unsigned char>& tet);
int main()
{
std::vector<unsigned char> tet;
std::string jet;
std::getline(std::cin, jet);
auto j = jet.cbegin();
for (int i = 0; i < 2022; ++i) {
add(tet);
while (move(tet, *j++)) {
if (tet.back() == 0)
tet.pop_back();
if (j >= jet.cend())
j = jet.cbegin();
}
}
std::cout << tet.size() << std::endl;
return 0;
}
void add(std::vector<unsigned char>& tet)
{
tet.push_back(0);
tet.push_back(0);
tet.push_back(0);
current = *next;
currenty = tet.size();
for (auto n = current; n; n >>= 8)
tet.push_back(n);
if (++next >= pieces.end())
next = pieces.begin();
}
bool move(std::vector<unsigned char>& tet, char dir)
{
auto tetcopy = tet;
if (dir == '<') {
if ((current & 0x0101) == 0) {
int i = currenty;
int shift = 1;
for (auto n = current; n; n >>= 8) {
auto t = tet[i] & ~n;
if (t & (n >> 1)) {
shift = 0;
tet = tetcopy;
break;
}
tet[i] = t | n >> 1;
++i;
}
if (shift)
current >>= 1;
}
} else if (dir == '>') {
if ((current & 0x4040) == 0) {
int i = currenty;
int shift = 1;
for (auto n = current; n; n >>= 8) {
auto t = tet[i] & ~n;
if (t & (n << 1)) {
shift = 0;
tet = tetcopy;
break;
}
tet[i] = t | n << 1;
++i;
}
if (shift)
current <<= 1;
}
} else {
return false;
}
if (currenty == 0)
return false;
tetcopy = tet;
int i = currenty;
for (auto n = current; n; n >>= 8) {
if (tet[i - 1] & n) {
tet = tetcopy;
return false;
}
tet[i] &= ~n;
tet[i - 1] |= n;
++i;
}
--currenty;
return true;
}
void show(const std::vector<unsigned char>& tet)
{
for (auto it = tet.rbegin(); it != tet.rend(); ++it) {
for (int i = 0; i < 7; ++i)
std::cout << ((*it & (1 << i)) ? '@' : '.');
std::cout << std::endl;
}
std::cout << std::endl;
}
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