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#include<fstream>
#include<bitset>
#include<queue>
#define DIM 1001
#define inf 2000000000
using namespace std;
ifstream fin("critice.in");
ofstream fout("critice.out");
int n,m,i,mini,ve,a,b,cap, sol[DIM],nod,j,va[10001],vb[10001],nr;
int c[DIM][DIM], f[DIM][DIM];
int t[DIM];
bitset<DIM> d;
deque<int> z;
vector<int> v[DIM];
int bfs()
{
int i, nod,vecin;
d.reset();
z.push_back(1);
d[1]=1;
while(!z.empty())
{
nod=z[0];z.pop_front();
for(i=0;i<v[nod].size();i++)
{
vecin=v[nod][i];
if(c[nod][vecin]>f[nod][vecin]&&d[vecin]==0)
{
z.push_back(vecin);
d[vecin]=1;t[vecin]=nod;
}
}
}
return d[n];
}
void solve(int start, int val)
{
int i, nod,vecin;
d.reset();
z.push_back(start);
d[start]=1;
while(!z.empty())
{
nod=z[0];z.pop_front();
for(i=0;i<v[nod].size();i++)
{
vecin=v[nod][i];
if(!((f[vecin][nod]==c[vecin][nod])||(f[nod][vecin]==c[nod][vecin]))&&d[vecin]==0)
{
z.push_back(vecin);
d[vecin]=1;t[vecin]=nod;
}
}
}
for(i=1;i<=n;i++)
if(d[i])
sol[i]+=val;
}
int main()
{
fin>>n>>m;
for(i=1;i<=m;i++)
{
fin>>a>>b>>cap;
va[i]=a;vb[i]=b;
v[a].push_back(b);
v[b].push_back(a);
c[a][b]=cap;
c[b][a]=cap;
}
while(bfs()==1)
{
mini=inf;nod=n;
while(t[nod])
{
mini=min(mini,c[t[nod]][nod]-f[t[nod]][nod]);
nod=t[nod];
}
nod=n;
while(t[nod])
{
f[t[nod]][nod]+=mini;
f[nod][t[nod]]-=mini;
nod=t[nod];
}
}
solve(1, 1);solve(n, 2);
return 0;
}