Submission #637582

#TimeUsernameProblemLanguageResultExecution timeMemory
637582ksu2009enT-Covering (eJOI19_covering)C++14
0 / 100
3 ms340 KiB
#include <iostream> #include <vector> #include <string> #include <math.h> #include <cmath> #include <iomanip> #include <cstdio> #include <algorithm> #include <map> #include <set> #include <queue> #include <stack> #include <deque> #include <bitset> #include <cstring> using namespace std; typedef long long ll; ll n, m; ll check(ll x, ll y, vector<vector<ll>> &a, ll ok){ ll res = 0; if(ok == 1){ res += ((x > 0 && y > 0 && x <= n && y <= m) ? a[x][y] : -1e9); res += ((x - 1 > 0 && y > 0 && x - 1 <= n && y <= m) ? a[x - 1][y] : -1e9); res += ((x > 0 && y - 1 > 0 && x <= n && y - 1 <= m) ? a[x][y - 1] : -1e9); res += ((x > 0 && y + 1 > 0 && x <= n && y + 1 <= m) ? a[x][y + 1] : -1e9); } else if(ok == 2){ res += ((x > 0 && y > 0 && x <= n && y <= m) ? a[x][y] : -1e9); res += ((x - 1 > 0 && y > 0 && x - 1 <= n && y <= m) ? a[x - 1][y] : -1e9); res += ((x + 1 > 0 && y > 0 && x + 1 <= n && y <= m) ? a[x + 1][y] : -1e9); res += ((x > 0 && y + 1 > 0 && x <= n && y + 1 <= m) ? a[x][y + 1] : -1e9); } else if(ok == 3){ res += ((x > 0 && y > 0 && x <= n && y <= m) ? a[x][y] : -1e9); res += ((x > 0 && y - 1 > 0 && x <= n && y - 1 <= m) ? a[x][y - 1] : -1e9); res += ((x + 1 > 0 && y > 0 && x + 1 <= n && y <= m) ? a[x + 1][y] : -1e9); res += ((x > 0 && y + 1 > 0 && x <= n && y + 1 <= m) ? a[x][y + 1] : -1e9); } else if(ok == 4){ res += ((x > 0 && y > 0 && x <= n && y <= m) ? a[x][y] : -1e9); res += ((x - 1 > 0 && y > 0 && x - 1 <= n && y <= m) ? a[x - 1][y] : -1e9); res += ((x + 1 > 0 && y > 0 && x + 1 <= n && y <= m) ? a[x + 1][y] : -1e9); res += ((x > 0 && y - 1 > 0 && x <= n && y - 1 <= m) ? a[x][y - 1] : -1e9); } return (res < 0 ? -1e9 : res); } int main(){ cin >> n >> m; vector<vector<ll>>a(n + 1, vector<ll>(m + 1)); for(int i = 1; i <= n; i++) for(int j = 1; j <= m; j++) cin >> a[i][j]; ll k; cin >> k; vector<pair<ll, ll>> d(k); for(int i = 0; i < k; i++) cin >> d[i].first >> d[i].second; bool ok = false; for(int i = 0; i < k; i++) for(int j = i + 1; j < k; j++) if(abs(d[i].first - d[j].first) <= 2 || abs(d[i].second - d[j].second) <= 2) ok = true; if(!ok){ ll ans = 0; for(auto i: d){ ll cnt = max({check(i.first, i.second, a, 1), check(i.first, i.second, a, 2), check(i.first, i.second, a, 3), check(i.first, i.second, a, 4)}); if(cnt == -1e9){ cout << -1 << endl; return 0; } ans += cnt; } cout << ans << endl; } return 0; }
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