Create 1403.cpp

This commit is contained in:
Kirigaya Kazuto 2016-04-27 11:35:56 +08:00
parent 821d7fc80e
commit 3d1c87a825

40
TYVJ/1403.cpp Normal file
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#include <algorithm>
#include <iostream>
using namespace std;
int n,m,f[40001],x,y;
struct data
{
int a,b,c;
}e[100001];
int gz(const data &a,const data &b)
{
if(a.c>b.c)return 1;
else return 0;
}
int find(int x)
{
return f[x]==x?x:f[x]=find(f[x]);
}
int main()
{
cin>>n>>m;
for(int i=1;i<=m;i++)
cin>>e[i].a>>e[i].b>>e[i].c;
for(int i=1;i<=n*2;i++)
f[i]=i;
sort(e+1,e+m+1,gz);
for(int i=1;i<=m;i++)
{
x=find(e[i].a);
y=find(e[i].b);
if(x==y)
{
cout<<e[i].c;
return 0;
}
f[y] = find(e[i].a + n);
f[x] = find(e[i].b + n);
}
cout<<0;
return 0;
}