| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 990128 | LOLOLO | Sunčanje (COCI18_suncanje) | C++14 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
typedef long double ll;
typedef long long lt;
#define f first
#define s second
#define pb push_back
#define ep emplace
#define eb emplace_back
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define uniquev(v) sort(all(v)), (v).resize(unique(all(v)) - (v).begin())
#define mem(f,x) memset(f , x , sizeof(f))
#define sz(x) (ll)(x).size()
#define __lcm(a, b) (1ll * ((a) / __gcd((a), (b))) * (b))
#define mxx *max_element
#define mnn *min_element
#define cntbit(x) __builtin_popcountll(x)
#define len(x) (int)(x.length())
const int N = 1e2 + 10;
ll mat[N][N], sum[N][N], dp[N * N][N][N];
ll solve() {
lt k;
int n, m, a, b;
cin >> n >> m >> a >> b >> k;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
cin >> mat[i][j];
}
}
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
sum[i][j] = max({mat[i - 1][j], mat[i][j - 1], mat[i + 1][j], mat[i][j + 1]}) + mat[i][j];
}
}
for (int i = 0; i <= n + 1; i++) {
for (int j = 0; j <= m + 1; j++) {
dp[0][i][j] = -1e18;
}
}
dp[0][a][b] = mat[a][b] * 2;
lt sz = n * m;
for (int id = 1; id <= sz; id++) {
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
dp[id][i][j] = max({dp[id - 1][i - 1][j], dp[id - 1][i][j - 1], dp[id - 1][i + 1][j], dp[id - 1][i][j + 1]}) + mat[i][j] * 2;
}
}
}
ll ans = 0;
k++;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
lt x = 0;
ll odd = -1e18, even = -1e18;
for (lt f = min(sz, k); f >= 1; f--) {
while (x <= sz && x + f <= k) {
if (x % 2) {
odd = max(odd, dp[x][i][j] - x * sum[i][j]);
} else {
even = max(even, dp[x][i][j] - x * sum[i][j]);
}
x++;
}
int t = (k - f) % 2;
if (t % 2) {
ans = max(ans, dp[f][i][j] - f * sum[i][j] + odd - mat[i][j] * 2 + sum[i][j] * k);
} else {
ans = max(ans, dp[f][i][j] - f * sum[i][j] + even - mat[i][j] * 2 + sum[i][j] * k);
}
}
}
}
return ans / 2;
}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int t = 1;
//cin >> t;
while (t--) {
cout << (lt)solve() << '\n';
}
return 0;
}