mirror of
https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
92 lines
1.9 KiB
C++
92 lines
1.9 KiB
C++
#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <vector>
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#include <algorithm>
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using namespace std;
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#define MAXPOINT 512
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//#define dprintf(A,B...) printf(A,##B)
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#define dprintf(A,B...)
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int groupid[MAXPOINT];
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struct EDGE
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{
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int u,v;
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int w;
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};
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bool cmp_d(const EDGE& a,const EDGE& b)
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{
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if(a.w==b.w)
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{
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if(a.u==b.u)
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{
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return a.v<b.v;
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}
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return a.u<b.u;
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}
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return a.w<b.w;
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}
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int findgroup(int pos)
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{
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int f=groupid[pos];
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while(groupid[f]!=f) f=groupid[f];
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return f;
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}
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int main()
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{
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int n;
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scanf("%d",&n);
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while(n--)
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{
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int V,E;
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scanf("%d %d",&V,&E);
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vector<EDGE> vec;
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EDGE tmp;
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for(int i=0;i<E;i++)
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{
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scanf("%d %d %d",&tmp.u,&tmp.v,&tmp.w);
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if(tmp.u>tmp.v)
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swap(tmp.u,tmp.v);
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vec.push_back(tmp);
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}
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sort(vec.begin(),vec.end(),cmp_d);
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for(int i=0;i<MAXPOINT;i++)
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{
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groupid[i]=i;
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}
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int totalw=0;
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int choosed=0;
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for(int i=0;i<E&&choosed<V-1;i++)
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{
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int KA=findgroup(vec.at(i).u);
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int KB=findgroup(vec.at(i).v);
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if(KA!=KB)
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{
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/// Choose this Edge.
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dprintf("Choose %d %d %d\n",vec.at(i).u,vec.at(i).v,vec.at(i).w);
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choosed++;
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totalw+=vec.at(i).w;
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groupid[vec.at(i).u]=KA;
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groupid[vec.at(i).v]=KA;
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groupid[KB]=KA;
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dprintf("%d <- %d\n",vec.at(i).u,vec.at(i).v);
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}
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}
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vector<int> dpos;
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int dtmp;
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for(int i=0;i<V;i++)
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{
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scanf("%d",&dtmp);
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dpos.push_back(dtmp);
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}
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sort(dpos.begin(),dpos.end());
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totalw+=dpos.at(0);
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printf("%d\n",totalw);
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}
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return 0;
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}
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