if there are three cells A, B and C, not touching nor overlapping each other, at least three plans are possible in order to connect all three cells. The first is to build corridors A-B and A-C,
#include<cstring> #include<cstdio> #include<queue> #include<math.h> #include<vector> usingnamespacestd; #definemaxn 105 structpoint{doublex, y, z, r;}p[maxn]; structnode { intu, v; doublelen; friendbooloperator< (node a, node b) { returna.len > b.len; } }; intf[maxn]; ...
http://poj.org/problem?id=2031 #include<iostream> #include<algorithm> #include<cmath> #include<cstdio> using namespace std; double a[101][4]; double esp = 0.0000001; struct edge { int u,v; double w; } e[5000]; int tree[101]; int cmp( const void *a ,const void *b) { retu...
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surfaces. It can be made arbitrarily long, but of course the shortest one is chosen. Even if two corridors A-B and C-D intersect in space, they are not considered to form a connection path between (for example) A and C. In other words, you may consider that two corridors never ...
You can ignore the width of a corridor. A corridor is built between points on two cells' surfaces. It can be made arbitrarily long, but of course the shortest one is chosen. Even if two corridors A-B and C-D intersect in space, they are not considered to form a connection path betwe...
全程double精度就能过了 间接0距离不用管 prim自动连起来的 G++交的话只能用%f输出 C++的话加不加l都可以 (这么说以后用%f肯定不会错咯) 不过我不懂为什么他们的空间时间差了好多倍... #include <cstdio>#include<cmath>#include<cstring>#include<queue>#include<vector>#include<algorithm>#defineINF 0x3F...