MST  Minimum Spanning Tree
Find the minimum spanning tree of the graph.
Input
On the first line there will be two integers N  the number of nodes and M  the number of edges. (1 <= N <= 10000), (1 <= M <= 100000)
M lines follow with three integers i j k on each line representing an edge between node i and j with weight k. The IDs of the nodes are between 1 and n inclusive. The weight of each edge will be <= 1000000.
Output
Single number representing the total weight of the minimum spanning tree on this graph. There will be only one possible MST.
Example
Input: 4 5 1 2 10 2 3 15 1 3 5 4 2 2 4 3 40 Output: 17
hide comments
shubho5das:
20210223 20:23:33
Implement both Kruskal's as well as Prim's 

ravi7526:
20210211 12:21:23
what do mean by 9.09 error 

kya_bantai:
20201111 06:55:37
try to implement both prims's and krushal's algorithm 

dodongchien123:
20200912 15:59:28
This problem is another kind of judge. So 0 to 100 is your result, which 100 is fully passed (accepted). 

abhishek__2007:
20200725 12:26:58
my code is based on DISJOINT SET UNION taking O(1)*m time but why i am not getting 100pts.is am getting TLE on some TC;


harsh_k:
20200717 20:42:45
why is it showing 0 and not 100 as others have pointed. I think I solved it correctly as it shows green colour but still why 0 

mohibur_rahman:
20200702 14:35:37
Can anybody tell me why my code shows result 100 instead of accept? 

coolboy7:
20200629 11:45:20


zubrach08:
20200416 17:05:21
i will do it with union find


nadstratosfer:
20200320 22:51:17
Probably 6 correct answers out of 11 cases (6/11 = 0.54545). 
Added by:  Nikola P Borisov 
Date:  20081020 
Time limit:  1s2s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: ERL JSRHINO NODEJS PERL6 VB.NET 