#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#define in(x) freopen(x, "r", stdin)
#define out(x) freopen(x, "w", stdout)
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("-O3")
#define F first
#define S second
#define pb push_back
#define N +100500
#define M ll(1e9 + 7)
#define sz(x) (int)x.size()
#define re return
#define oo ll(1e9)
#define el '\n'
#define pii pair <int, int>
using namespace std;
//using namespace __gnu_pbds;
//typedef tree <int, null_type, less_equal <int> , rb_tree_tag, tree_order_statistics_node_update> ordered_set;
typedef long long ll;
typedef long double ld;
int n, m, i, j, b, B, len, ans, I, J;
char c[305][305];
bool great(string a, string b)
{
if (b == "x") return 1;
if (sz(a) < sz(b)) return 0;
if (sz(a) > sz(b)) return 1;
return (a < b);
}
int main()
{
srand(time(0));
ios_base::sync_with_stdio(0);
iostream::sync_with_stdio(0);
ios::sync_with_stdio(0);
cin.tie(NULL);
cout.tie(NULL);
// in("input.txt");
// out("output.txt");
cin >> n >> m;
if (n * m * 1ll * n * n * 2 > ll(2e8))
{
pair <int, int> f[n + 5][m + 5][n + 5];
for (i = 1; i <= n; i++)
for (j = 1; j <= m; j++)
for (b = 0; b <= n; b++)
f[i][j][b].F = -1;
for (i = 1; i <= n; i++)
for (j = 1; j <= m; j++)
{
cin >> c[i][j];
if (c[i][j] == 'M') f[i][j][0].F = 0;
}
for (i = n; i >= 2; i--)
{
for (j = 1; j <= m; j++)
for (b = 0; b <= n; b++)
{
if (f[i][j][b].F == -1) continue;
if (j - 1 >= 1 && c[i - 1][j - 1] != '*')
{
int B = b, len = f[i][j][b].F;
if (c[i - 1][j - 1] == '(') B++, len++; else
if (c[i - 1][j - 1] == ')') B--, len++;
if (B >= 0 && (f[i - 1][j - 1][B].F == -1 || f[i - 1][j - 1][B].F < len || (f[i - 1][j - 1][B].F == len && B - b == 1)))
{
// cerr << len << " " << i - 1 << " " << j - 1 << " " << B << el;
f[i - 1][j - 1][B].F = len;
f[i - 1][j - 1][B].S = j;
}
}
if (j >= 1 && c[i - 1][j] != '*')
{
int B = b, len = f[i][j][b].F;
if (c[i - 1][j] == '(') B++, len++; else
if (c[i - 1][j] == ')') B--, len++;
if (B >= 0 && (f[i - 1][j][B].F == -1 || f[i - 1][j][B].F < len || (f[i - 1][j][B].F == len && B - b == 1)))
{
// cerr << len << " " << i - 1 << " " << j << " " << B << el;
f[i - 1][j][B].F = len;
f[i - 1][j][B].S = j;
}
}
if (j + 1 <= m && c[i - 1][j + 1] != '*')
{
int B = b, len = f[i][j][b].F;
if (c[i - 1][j + 1] == '(') B++, len++; else
if (c[i - 1][j + 1] == ')') B--, len++;
if (B >= 0 && (f[i - 1][j + 1][B].F == -1 || f[i - 1][j + 1][B].F < len || (f[i - 1][j + 1][B].F == len && B - b == 1)))
{
// cerr << len << " " << i - 1 << " " << j + 1 << " " << B << el;
f[i - 1][j + 1][B].F = len;
f[i - 1][j + 1][B].S = j;
}
}
}
}
for (i = 1; i <= n; i++)
{
for (j = 1; j <= m; j++)
{
if (i == 1 || c[i - 1][j] == '*' || (j - 1 >= 1 && c[i - 1][j - 1] == '*') || (j + 1 <= m && c[i - 1][j + 1] == '*'))
{
if (ans < f[i][j][0].F)
ans = f[i][j][0].F, I = i, J = j;
}
}
}
string s = "";
cout << ans << el;
b = 0;
while (I != n)
{
int nb = b;
if (c[I][J] != '.')
{
if (c[I][J] == ')') nb++;
else nb--;
s += c[I][J];
}
J = f[I][J][b].S;
I++;
b = nb;
}
reverse(s.begin(), s.end());
cout << s;
}
else
{
string F[n + 5][m + 5][n + 5];
for (i = 1; i <= n; i++)
for (j = 1; j <= m; j++)
for (b = 0; b <= n; b++)
F[i][j][b] = "x";
for (i = 1; i <= n; i++)
for (j = 1; j <= m; j++)
{
cin >> c[i][j];
if (c[i][j] == 'M') F[i][j][0] = "";
}
for (i = n; i >= 2; i--)
{
for (j = 1; j <= m; j++)
for (b = 0; b <= n; b++)
{
if (F[i][j][b] == "x") continue;
// cerr << i << " " << j << " " << b << " " << F[i][j][b] << el;
if (j - 1 >= 1 && c[i - 1][j - 1] != '*')
{
int B;B = b;
string x = F[i][j][b];
if (c[i - 1][j - 1] == '(') x += "(", B++; else
if (c[i - 1][j - 1] == ')') x += ")", B--;
if (B >= 0 && great(x, F[i - 1][j - 1][B]))
{
//cout << i << " " << j << " " << B << " " << b << " " << F[i][j][b] << " " << F[i - 1][j - 1][B] << el;
// // cerr << len << " " << i - 1 << " " << j - 1 << " " << B << el;
F[i - 1][j - 1][B] = x;
}
}
if (j >= 1 && c[i - 1][j] != '*')
{
int B = b;
string x = F[i][j][b];
if (c[i - 1][j] == '(') x += "(", B++; else
if (c[i - 1][j] == ')') x += ")", B--;
if (B >= 0 && great(x, F[i - 1][j][B]))
{
// cerr << F[i][j][b] << " " << F[i - 1][j][B] << el;
// cerr << len << " " << i - 1 << " " << j << " " << B << el;
F[i - 1][j][B] = x;
}
}
if (j + 1 <= m && c[i - 1][j + 1] != '*')
{
int B = b;
string x = F[i][j][b];
if (c[i - 1][j + 1] == '(') x += "(", B++; else
if (c[i - 1][j + 1] == ')') x += ")", B--;
if (B >= 0 && great(x, F[i - 1][j + 1][B]))
{
// cerr << F[i][j][b] << " " << F[i - 1][j + 1][B] << el;
F[i - 1][j + 1][B] = x;
}
}
}
}
string s = "";
for (i = 1; i <= n; i++)
{
for (j = 1; j <= m; j++)
{
if (i == 1 || c[i - 1][j] == '*' || (j - 1 >= 1 && c[i - 1][j - 1] == '*') || (j + 1 <= m && c[i - 1][j + 1] == '*'))
{
if (great(F[i][j][0], s))
s = F[i][j][0];
}
}
}
// s.erase(0, 1);
cout << sz(s) << el << s;
}
}
//
//110000
//1100
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
4 ms |
384 KB |
Output is correct |
| 2 |
Correct |
5 ms |
640 KB |
Output is correct |
| 3 |
Correct |
5 ms |
512 KB |
Output is correct |
| 4 |
Correct |
5 ms |
896 KB |
Output is correct |
| 5 |
Correct |
6 ms |
1664 KB |
Output is correct |
| 6 |
Correct |
42 ms |
14452 KB |
Output is correct |
| 7 |
Correct |
55 ms |
23288 KB |
Output is correct |
| 8 |
Correct |
40 ms |
14840 KB |
Output is correct |
| 9 |
Correct |
92 ms |
32248 KB |
Output is correct |
| 10 |
Correct |
112 ms |
41976 KB |
Output is correct |
| 11 |
Partially correct |
187 ms |
195192 KB |
Partially correct |
| 12 |
Partially correct |
179 ms |
195064 KB |
Partially correct |
| 13 |
Partially correct |
91 ms |
91640 KB |
Partially correct |
| 14 |
Partially correct |
88 ms |
91640 KB |
Partially correct |
| 15 |
Partially correct |
214 ms |
220408 KB |
Partially correct |
| 16 |
Partially correct |
206 ms |
220408 KB |
Partially correct |
| 17 |
Partially correct |
181 ms |
186104 KB |
Partially correct |
| 18 |
Partially correct |
175 ms |
186064 KB |
Partially correct |
| 19 |
Partially correct |
222 ms |
222584 KB |
Partially correct |
| 20 |
Partially correct |
214 ms |
222584 KB |
Partially correct |
