| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 236145 | kartel | Retro (COCI17_retro) | C++14 | 235 ms | 222712 KiB |
이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#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 * n > ll(1e9))
{
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 <= 300; 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 <= 300; 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 <= 300; b++)
f[i][j][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 / 2; b++)
{
if (f[i][j][b] == "x") continue;
// cout << 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
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| Fetching results... | ||||