#include <bits/stdc++.h>
#include "soccer.h"
using namespace std;
// ordered set whith s.order_of_key(x) method, which returns rank of element x in set s
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
*/
// pair printing
template <class T, class U>
ostream& operator<<(ostream& out, const pair<T, U> &par) {out << "(" << par.first << "; " << par.second << ")"; return out;}
// set printing
template <class T>
ostream& operator<<(ostream& out, const set<T> &cont) { out << "{"; for(const auto &x:cont) out << x << ", "; out << "}"; return out; }
// map printing
template <class T, class U>
ostream& operator<<(ostream& out, const map<T, U> &cont) {out << "{"; for(const auto &x:cont) out << x << ", "; out << "}"; return out; }
// unordered_set printing
template <class T>
ostream& operator<<(ostream& out, const unordered_set<T> &cont) {out << "{";for(const auto &x:cont) out << x << ", ";out << "}";return out;}
// unordered_map printing
template <class T, class U>
ostream& operator<<(ostream& out, const unordered_map<T, U> &cont) {out << "{";for(const auto &x:cont) out << x << ", ";out << "}";return out;}
// vector printing
template<class T>
ostream& operator<<(ostream& out, const vector<T> &cont){ out << "["; for (const auto &x:cont) out << x << ", "; out << "]"; return out;}
#define print(x) cout << (x) << endl;
#define dmp(x) cerr << #x << " = " << x << endl
#define dmpn(x) cerr << #x << " = " << x << "; "
#define dmpl(x) cerr << "Line " << __LINE__ << ": " << #x << " = " << x << endl
using ll = long long;
using ld = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
#define pb push_back
#define ff first
#define ss second
#define all(x) begin(x), end(x)
#define sz(x) (int)x.size()
#define contains(s,x) ((s).find(x) != (s).end())
const int MOD = 998244353;
vector<vector<int>> g;
vector<vector<vector<vector<int>>>> memo;
int N;
pii prev_next(int j, vector<int> &tree_row, int N) {
auto it_prev = lower_bound(all(tree_row), j);
auto it_next = lower_bound(all(tree_row), j);
int prev = (it_prev == begin(tree_row)) ? -1 : *(--it_prev);
int next = (it_next == end(tree_row)) ? N : *(it_next);
return { prev, next };
}
vector<int> get_borders(vector<int> &row, int l, int r) {
vector<int> borders = { l - 1 };
for (int j = l; j <= r; j++) if (row[j]) borders.pb(j);
borders.pb(r + 1);
return borders;
}
int recur(int row, int l, int r, int change) {
bool d = (change == 1) ? false : true;
if (row + change < 0 || row + change >= N) return r - l + 1;
// dmpn(row); dmpn(d); dmpn(l); dmp(r);
if (l == r && g[row][l] == 1) return 0;
if (memo[d][row][l][r] != -1) return memo[d][row][l][r];
int ans = 0;
vector<int> ones = get_borders(g[row + change], l, r);
for (int i = 1; i < sz(ones); i++) {
if (ones[i - 1] + 1 != ones[i])
ans = max(recur(row + change, ones[i - 1] + 1, ones[i] - 1, change), ans);
}
ans += r - l + 1;
memo[d][row][l][r] = ans;
return ans;
}
int biggest_stadium(int n, vector<vector<int>> F) {
if (N >= 300) return -1;
N = n;
g = F;
vector<pii> trees;
vector<vector<int>> tree_rows(N);
memo.assign(2, vector<vector<vector<int>>>(N, vector<vector<int>>(N, vector<int>(N, -1))));
for (int i = 0; i < N; i++) for (int j = 0; j < N; j++) if (F[i][j]) {
trees.pb({ i, j });
tree_rows[i].pb(j);
}
int ans = N * N;
/*
if (sz(trees) <= 1) {
if (sz(trees) == 0) return ans;
int r = trees[0].ff, c = trees[0].ff;
ans = max({
ans - (r + 1) * (c + 1),
ans - (N - r) * (N - c),
ans - (r + 1) * (N - c),
ans - (c + 1) * (N - r),
});
return ans;
}
*/
// vector<int> last_tree(N, -1), next_tree(N);
// for (int i = 0; i < N; i++) next_tree[i] = (!tree_rows[i].empty()) ? tree_rows[i][0] : N;
ans = 0;
for (int i = 0; i < N; i++) {
for (int j = 0; j < N; j++) {
if (F[i][j]) continue;
pii p = prev_next(j, tree_rows[i], N);
// dmp(p);
vector<int> borders = get_borders(g[min(i + 1, N - 1)], 0, N - 1);
for (int bl = 1; bl < sz(borders); bl++) {
// dmpn(borders[bl - 1]); dmp(borders[bl]);
if (borders[bl - 1] + 1 == borders[bl]) continue;
int up = 0, down = 0;
if (i < N - 1)
up = recur(i + 1, borders[bl - 1] + 1, borders[bl] - 1, 1);
down = recur(i, p.ff + 1, p.ss - 1, -1);
// dmpn(down); dmp(up);
ans = max(ans, up + down);
}
}
}
return ans;
}
/*
int32_t main() {
int N;
cin >> N;
vector<vector<int>> F(N, vector<int>(N));
for (int i = 0; i < N; i++) for (int j = 0; j < N; j++) cin >> F[i][j];
int ans = biggest_stadium(N, F);
cout << ans << endl;
}
*/
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
ok |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
ok |
| 2 |
Correct |
0 ms |
344 KB |
ok |
| 3 |
Correct |
0 ms |
344 KB |
ok |
| 4 |
Correct |
0 ms |
348 KB |
ok |
| 5 |
Correct |
0 ms |
344 KB |
ok |
| 6 |
Correct |
1 ms |
344 KB |
ok |
| 7 |
Correct |
10 ms |
13400 KB |
ok |
| 8 |
Correct |
967 ms |
1501588 KB |
ok |
| 9 |
Runtime error |
1183 ms |
2097152 KB |
Execution killed with signal 9 |
| 10 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
ok |
| 2 |
Correct |
0 ms |
344 KB |
ok |
| 3 |
Correct |
1 ms |
344 KB |
ok |
| 4 |
Correct |
0 ms |
348 KB |
ok |
| 5 |
Incorrect |
1 ms |
344 KB |
wrong |
| 6 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
ok |
| 2 |
Correct |
0 ms |
344 KB |
ok |
| 3 |
Correct |
0 ms |
344 KB |
ok |
| 4 |
Correct |
1 ms |
344 KB |
ok |
| 5 |
Correct |
0 ms |
348 KB |
ok |
| 6 |
Incorrect |
1 ms |
344 KB |
wrong |
| 7 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
ok |
| 2 |
Correct |
0 ms |
344 KB |
ok |
| 3 |
Correct |
0 ms |
344 KB |
ok |
| 4 |
Correct |
0 ms |
344 KB |
ok |
| 5 |
Correct |
0 ms |
348 KB |
ok |
| 6 |
Correct |
1 ms |
344 KB |
ok |
| 7 |
Correct |
0 ms |
348 KB |
ok |
| 8 |
Incorrect |
1 ms |
344 KB |
wrong |
| 9 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
ok |
| 2 |
Correct |
0 ms |
344 KB |
ok |
| 3 |
Correct |
0 ms |
344 KB |
ok |
| 4 |
Correct |
0 ms |
344 KB |
ok |
| 5 |
Correct |
0 ms |
348 KB |
ok |
| 6 |
Correct |
1 ms |
344 KB |
ok |
| 7 |
Correct |
0 ms |
348 KB |
ok |
| 8 |
Incorrect |
1 ms |
344 KB |
wrong |
| 9 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
ok |
| 2 |
Correct |
0 ms |
344 KB |
ok |
| 3 |
Correct |
0 ms |
344 KB |
ok |
| 4 |
Correct |
0 ms |
344 KB |
ok |
| 5 |
Correct |
0 ms |
348 KB |
ok |
| 6 |
Correct |
0 ms |
344 KB |
ok |
| 7 |
Correct |
1 ms |
344 KB |
ok |
| 8 |
Correct |
10 ms |
13400 KB |
ok |
| 9 |
Correct |
967 ms |
1501588 KB |
ok |
| 10 |
Runtime error |
1183 ms |
2097152 KB |
Execution killed with signal 9 |
| 11 |
Halted |
0 ms |
0 KB |
- |
