#include <cstdio>
#include <cstring>
#include <iostream>
#include <queue>
#include <algorithm>
using namespace std;
int n,m,cnt,S,T,ans;
int to[20000],next[20000],val[20000],head[1000],d[1000];
int map[1000][1000],p[1000],pp[1000],s[1000000];
queue<int> q;
void add(int a,int b,int c)
{
	to[cnt]=b,val[cnt]=c,next[cnt]=head[a],head[a]=cnt++;
	to[cnt]=a,val[cnt]=c,next[cnt]=head[b],head[b]=cnt++;
}
int dfs(int x,int mf)
{
	if(x==T)	return mf;
	int k,temp=mf,i;
	for(i=head[x];i!=-1;i=next[i])
	{
		if(d[to[i]]==d[x]+1&&val[i])
		{
			k=dfs(to[i],min(temp,val[i]));
			if(!k)	d[to[i]]=0;
			val[i]-=k,val[i^1]+=k,temp-=k;
			if(!temp)	break;
		}
	}
	return mf-temp;
}
int bfs()
{
	while(!q.empty())	q.pop();
	memset(d,0,sizeof(d));
	d[S]=1,q.push(S);
	int i,u;
	while(!q.empty())
	{
		u=q.front(),q.pop();
		for(i=head[u];i!=-1;i=next[i])
		{
			if(!d[to[i]]&&val[i])
			{
				d[to[i]]=d[u]+1;
				if(to[i]==T)	return 1;
				q.push(to[i]);
			}
		}
	}
	return 0;
}
void solve(int l,int r)
{
	if(l==r)	return ;
	S=p[l],T=p[r];
	int i,j,h1=l,h2=r,mf=0;
	for(i=0;i<cnt;i+=2)	val[i]=val[i^1]=val[i]+val[i^1]>>1;
	while(bfs())	mf+=dfs(S,1<<30);
	for(i=1;i<=n;i++)	if(d[i])
		for(j=1;j<=n;j++)	if(!d[j])
			map[i][j]=map[j][i]=min(map[i][j],mf);
	for(i=l;i<=r;i++)
	{
		if(d[p[i]])	pp[h1++]=p[i];
		else	pp[h2--]=p[i];
	}
	for(i=l;i<=r;i++)	p[i]=pp[i];
	solve(l,h2),solve(h1,r);
}
int rd()
{
	int ret=0,f=1;	char gc=getchar();
	while(gc<‘0‘||gc>‘9‘)	{if(gc==‘-‘)f=-f;	gc=getchar();}
	while(gc>=‘0‘&&gc<=‘9‘)	ret=ret*10+gc-‘0‘,gc=getchar();
	return ret*f;
}
int main()
{
	n=rd(),m=rd();
	int i,j,a,b,c,pre;
	memset(head,-1,sizeof(head));
	memset(map,0x3f,sizeof(map));
	for(i=1;i<=m;i++)	a=rd(),b=rd(),c=rd(),add(a,b,c);
	for(i=1;i<=n;i++)	p[i]=i;
	solve(1,n);
	for(i=1;i<=n;i++)	for(j=i+1;j<=n;j++)	s[++s[0]]=map[i][j];
	sort(s+1,s+s[0]+1);
	for(pre=-1,i=1;i<=s[0];i++)	if(s[i]>pre)	pre=s[i],ans++;
	printf("%d",ans);
	return 0;
}