제출 #228990

#제출 시각아이디문제언어결과실행 시간메모리
228990VEGAnnMaja (COCI18_maja)C++14
88 / 110
69 ms65540 KiB
#include <bits/stdc++.h> #define PB push_back using namespace std; typedef long long ll; const int CNST = 2; const ll N = 110; const ll PW = 22; ll c[N][N], a, b, n, m, k; ll ans[8 * N][N][N]; void MAX(ll &x, ll y){ x = max(x, y); } int main(){ ios_base::sync_with_stdio(0); cin.tie(0); cin >> n >> m >> a >> b >> k; a--; b--; for (ll i = 0; i < n; i++) for (ll j = 0; j < m; j++) cin >> c[i][j]; ans[0][a][b] = 1; int cnst = 4 * (n + m); for (ll ite = 1; ite <= cnst; ite++){ // for (ll ite = 1; ite <= CNST; ite++){ for (ll i = 0; i < n; i++) for (ll j = 0; j < m; j++){ if (ans[ite - 1][i][j] == 0) continue; if (i > 0) MAX(ans[ite][i - 1][j], ans[ite - 1][i][j] + c[i - 1][j]); if (j > 0) MAX(ans[ite][i][j - 1], ans[ite - 1][i][j] + c[i][j - 1]); if (j + 1 < m) MAX(ans[ite][i][j + 1], ans[ite - 1][i][j] + c[i][j + 1]); if (i + 1 < n) MAX(ans[ite][i + 1][j], ans[ite - 1][i][j] + c[i + 1][j]); } } if (k <= cnst) cout << ans[k][a][b] - 1 << '\n'; else { ll res = 0; for (ll i = 0; i < n; i++) for (ll j = 0; j < m; j++) for (ll st = 0; st <= cnst; st++){ // for (ll st = 0; st <= CNST; st++){ if (ans[st][i][j] == 0) continue; if (st + st > k) break; ll cur = ans[st][i][j] - 1; ll mx = 0; if (i > 0) MAX(mx, c[i - 1][j]); if (j > 0) MAX(mx, c[i][j - 1]); if (j + 1 < m) MAX(mx, c[i][j + 1]); if (i + 1 < n) MAX(mx, c[i + 1][j]); mx += c[i][j]; res = max(res, cur * 2 + mx * (k - st * 2) / 2 - c[i][j]); } cout << res; } return 0; }
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