JalexDooo的博客

蓝书P244~P245#include #include #include #include #include using namespace std;typedef long long LL;const int INF = 0x3f3f3f3f;const int maxn = 100000 + 24;int Next[maxn], last, cur;char s[ma

#include #include #include #include #include using namespace std;typedef long long LL;const int maxn = 20;int a[1<<maxn];int n, m, u, v;void Build() { int p = 1 << n, res = 0; while(p) {

There is a piece of grids land of size n×m. Chandler and his team take responsibility to guard it. There are some searchlights on some pieces and each of them has a capability to lighten a distance towards four