#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define x first
#define y second
#define pb push_back
#define mp make_pair
#define all(a) (a).begin(), (a).end()
const int dx[4] = {-1, 0, 1, 0}, dy[4] = {0, 1, 0, -1};
const ll oo = 2e18;
int n, m;
int **a;
bool **f;
short **d;
int **c;
bool ok(int i, int j) {
return i >= 0 && i < n && j >= 0 && j < m;
}
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
cin >> n >> m;
a = new ll*[n];
f = new bool*[n];
d = new int*[n];
c = new int*[n];
for (int i = 0; i < n; ++i) {
a[i] = new ll[m];
f[i] = new bool[m];
d[i] = new int[m];
c[i] = new int[m];
for (int j = 0; j < m; ++j) cin >> a[i][j];
}
memset(d, 255, sizeof(d));
int k;
cin >> k;
while (k--) {
int r, c;
cin >> r >> c;
f[r][c] = 1;
}
for (int i = 0; i < n; ++i) {
for (int j = 0; j < m; ++j) {
if (!f[i][j]) continue;
for (int z = 0; z < 4; ++z) {
int x = i + dx[z], y = j + dy[z];
if (ok(x, y) && f[x][y]) {
d[i][j] = z;
d[x][y] = z ^ 2;
}
}
}
}
ll ans = 0;
for (int i = 0; i < n; ++i) {
for (int j = 0; j < m; ++j) {
if (f[i][j]) {
if (~d[i][j]) {
ll mx = -oo;
for (int z = 0; z < 4; ++z) {
bool OK = 1;
for (int zz = 0; zz < 4; ++zz) {
if (zz != z) OK &= ok(i + dx[zz], j + dy[zz]);
}
if (OK) {
ll q = a[i][j];
for (int zz = 0; zz < 4; ++zz) {
if (zz != z) q += a[i + dx[zz]][j + dy[zz]];
}
mx = max(mx, q);
}
}
ans += mx;
} else {
bool OK = 1;
for (int z = 0; z < 4; ++z) {
if (d[i][j] != z) OK &= ok(i + dx[z], j + dy[z]);
}
if (!OK) {
cout << "No\n";
return 0;
}
ll q = 0;
for (int z = 0; z < 4; ++z) {
if (d[i][j] != z) {
q += a[i + dx[z]][j + dy[z]];
++c[i + dx[z]][j + dy[z]];
}
}
ans += q;
}
}
}
}
for (int i = 0; i < n; ++i) {
for (int j = 0; j < m; ++j) {
if (c[i][j] > 1) {
cout << "No\n";
return 0;
}
}
}
cout << ans;
return 0;
}
Compilation message
covering.cpp: In function 'int main()':
covering.cpp:30:18: error: cannot convert 'long long int**' to 'int**' in assignment
a = new ll*[n];
^
covering.cpp:32:19: error: cannot convert 'int**' to 'short int**' in assignment
d = new int*[n];
^
covering.cpp:35:24: error: cannot convert 'long long int*' to 'int*' in assignment
a[i] = new ll[m];
^
covering.cpp:37:25: error: cannot convert 'int*' to 'short int*' in assignment
d[i] = new int[m];
^
covering.cpp:41:26: warning: argument to 'sizeof' in 'void* memset(void*, int, size_t)' call is the same expression as the destination; did you mean to dereference it? [-Wsizeof-pointer-memaccess]
memset(d, 255, sizeof(d));
^
