mirror of
https://git.sb/baoshuo/OI-codes.git
synced 2024-12-27 07:12:00 +00:00
32 lines
985 B
C++
32 lines
985 B
C++
#include <bits/stdc++.h>
|
|
|
|
using namespace std;
|
|
int n, m, k, x, y, o, p, ans = 0;
|
|
int dx1[13] = {2, 0, -2, 0, 1, 1, 1, 0, 0, 0, -1, -1, -1};
|
|
int dy1[13] = {0, 2, 0, -2, 0, 1, -1, 1, 0, -1, 0, 1, -1};
|
|
int dx2[25] = {-2, -2, -2, -2, -2, -1, -1, -1, -1, -1, 0, 0, 0,
|
|
0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2};
|
|
int dy2[25] = {-2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0,
|
|
1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2};
|
|
int main() {
|
|
cin >> n >> m >> k;
|
|
int a[n + 5][n + 5];
|
|
memset(a, 0, sizeof(a));
|
|
for (int i = 1; i <= m; i++) {
|
|
cin >> x >> y;
|
|
for (int j = 0; j < 13; j++)
|
|
a[x + dx1[j]][y + dy1[j]] = 1;
|
|
}
|
|
for (int i = 1; i <= k; i++) {
|
|
cin >> o >> p;
|
|
for (int j = 0; j < 25; j++)
|
|
a[o + dx2[j]][p + dy2[j]] = 1;
|
|
}
|
|
for (int i = 1; i <= n; i++)
|
|
for (int j = 1; j <= n; j++)
|
|
if (a[i][j] == 0)
|
|
ans++;
|
|
cout << ans;
|
|
return 0;
|
|
}
|