#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("-O3")
#pragma GCC optimize("Ofast")
//#pragma GCC optimize("fast-math")
//#pragma GCC optimize("no-stack-protector")
#define F first
#define S second
#define sz(x) int(x.size())
#define pb push_back
#define N 100001
#define M ll(1e9 + 7)
#define inf 1e9 + 1e9
using namespace std;
//using namespace __gnu_pbds;
typedef long double ld;
typedef long long ll;
typedef short int si;
typedef array <int, 2> a2;
//typedef tree <int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
ll f[301][301][301], n, m;
vector <char> ans, g;
string s[301];
bool mk[301][301][301];
bool low(vector <char> &a, vector <char> &b)
{
for (int i = sz(a) - 1; i >= 0; i--)
{
if (a[i] == b[i]) continue;
return a[i] == '(';
}
return 0;
}
//void rec(int i, int j, int b, int len)
//{
// if (mk[i][j][b]) return;
//
// mk[i][j][b] = 1;
//
// if (i == n - 1) return;
//
// for (int a = -1; a <= 1; a++)
// {
// int nb = b, nlen = len, jr = j + a;
//
// if (jr < 0 || jr == m || s[i + 1][jr] == '*') continue;
//
// if (s[i + 1][jr] == '(') {nb++; nlen++;}
//
// if (s[i + 1][jr] == ')') {nb--; nlen++;}
//
// if (nb == -1) continue;
//
// if (f[i + 1][jr][nb] == nlen) rec(i + 1, jr, nb, nlen);
// }
//}
void solve(int i, int j, int b, int len)
{
// if (mk[i][j][b]) return;
//
// mk[i][j][b] = 1;
if (i == n - 1)
{
if (sz(ans) == 0 || low(g, ans)) ans = g;
return;
}
if (s[i][j] == '(') {b--; len--; g.pb('(');}
if (s[i][j] == ')') {b++; len--; g.pb(')');}
for (int a = -1; a <= 1; a++)
{
int nb = b, nlen = len, jr = j + a;
if (jr < 0 || jr == m || s[i + 1][jr] == '*') continue;
if (nb == -1) continue;
// cout << i + 1 << " " << jr << " " << nb << " " << nlen << " " << f[i + 1][jr][nb] << endl;
if (f[i + 1][jr][nb] == nlen) solve(i + 1, jr, nb, nlen);
}
if (s[i][j] == '(') g.pop_back();
if (s[i][j] == ')') g.pop_back();
}
int main()
{
//freopen("input.txt", "r", stdin); //freopen("output4.txt", "w", stdout);
ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> n >> m;
for (int i = 0; i < n; i++) cin >> s[i];
int sx, sy;
for (int i = 0; i < m; i++)
if (s[n - 1][i] == 'M') {sx = n - 1; sy = i; break;}
memset(f, -1, sizeof(f));
f[sx][sy][0] = 0;
ll I = -1, J, K = -1;
for (int i = n - 1; i > 0; i--)
for (int j = 0; j < m; j++)
for (int st = 0; st <= n - i - 1; st++)
{
if (f[i][j][st] == -1 || s[i][j] == '*') continue;
for (int a = -1; a <= 1; a++)
if (a + j >= 0 && a + j < m && (st != 0 || s[i - 1][j + a] != ')'))
{
ll nw = f[i][j][st], nk = st;
if (s[i - 1][j + a] == '(') {nw++; nk++;}
if (s[i - 1][j + a] == ')') {nw++; nk--;}
if (f[i - 1][j + a][nk] == -1 || f[i - 1][j + a][nk] < nw) f[i - 1][j + a][nk] = nw;
}
}
for (int i = 0; i < 301; i++)
for (int j = 0; j < 301; j++)
if (K < f[i][j][0]) {I = i; J = j; K = f[i][j][0];}
// for (int i = 0; i < 301; i++)
// for (int j = 0; j < 301; j++)
// if (f[i][j][0] == K) rec(i, j, 0, K)
for (int i = 0; i < 301; i++)
for (int j = 0; j < 301; j++)
if (f[i][j][0] == K) solve(i, j, 0, K);
cout << K << endl;
reverse(ans.begin(), ans.end());
for (auto it : ans) cout << it;
}
Compilation message
retro.cpp: In function 'int main()':
retro.cpp:129:8: warning: variable 'I' set but not used [-Wunused-but-set-variable]
ll I = -1, J, K = -1;
^
retro.cpp:129:16: warning: variable 'J' set but not used [-Wunused-but-set-variable]
ll I = -1, J, K = -1;
^
retro.cpp:127:18: warning: 'sx' may be used uninitialized in this function [-Wmaybe-uninitialized]
f[sx][sy][0] = 0;
~~~~~~~~~~~~~^~~
retro.cpp:127:18: warning: 'sy' may be used uninitialized in this function [-Wmaybe-uninitialized]
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
100 ms |
213880 KB |
Output is correct |
| 2 |
Correct |
103 ms |
213880 KB |
Output is correct |
| 3 |
Correct |
101 ms |
213752 KB |
Output is correct |
| 4 |
Correct |
103 ms |
214008 KB |
Output is correct |
| 5 |
Correct |
105 ms |
213876 KB |
Output is correct |
| 6 |
Execution timed out |
1106 ms |
213880 KB |
Time limit exceeded |
| 7 |
Execution timed out |
1102 ms |
213752 KB |
Time limit exceeded |
| 8 |
Execution timed out |
1097 ms |
213752 KB |
Time limit exceeded |
| 9 |
Execution timed out |
1104 ms |
213880 KB |
Time limit exceeded |
| 10 |
Execution timed out |
1096 ms |
213880 KB |
Time limit exceeded |
| 11 |
Execution timed out |
1104 ms |
213884 KB |
Time limit exceeded |
| 12 |
Execution timed out |
1107 ms |
213880 KB |
Time limit exceeded |
| 13 |
Execution timed out |
1104 ms |
213880 KB |
Time limit exceeded |
| 14 |
Execution timed out |
1094 ms |
213880 KB |
Time limit exceeded |
| 15 |
Execution timed out |
1108 ms |
213884 KB |
Time limit exceeded |
| 16 |
Execution timed out |
1106 ms |
213880 KB |
Time limit exceeded |
| 17 |
Execution timed out |
1108 ms |
213880 KB |
Time limit exceeded |
| 18 |
Execution timed out |
1103 ms |
213880 KB |
Time limit exceeded |
| 19 |
Execution timed out |
1099 ms |
214060 KB |
Time limit exceeded |
| 20 |
Execution timed out |
1107 ms |
213880 KB |
Time limit exceeded |
