#include<iostream>
#include<cstdio>
#include<cstring>
#include<cstring>
#include<vector>
#include<queue>
#include<algorithm>
using namespace std;
const int inf=0x3fffffff;
const int maxn=207;
struct Edge
{
    int cap,flow;
};
int n,m,s,t;
Edge edges[maxn][maxn];
bool vis[maxn];
int d[maxn];
int cur[maxn];
void init()
{
          memset(edges,0,sizeof(edges));
}
bool BFS()
{
    memset(vis,0,sizeof(vis));
    queue<int>Q;
    Q.push(s);
    d[s]=0;
    vis[s]=1;
    while(!Q.empty()){
        int x=Q.front();Q.pop();
        for(int i=1;i<=n;i++){
            Edge &e=edges[x][i];
            if(!vis[i]&&e.cap>e.flow){
                vis[i]=1;
                d[i]=d[x]+1;
                Q.push(i);
            }
        }
    }
    return vis[t];
}
int DFS(int u,int cp)//进行增广
{
    int tmp=cp;
    int v,t;
    if(u==n)
        return cp;
    for(v=1;v<=n&&tmp;v++)
    {
        if(d[u]+1==d[v])
        {
            if(edges[u][v].cap>edges[u][v].flow)
            {
                t=DFS(v,min(tmp,edges[u][v].cap-edges[u][v].flow));
                edges[u][v].flow+=t;
                edges[v][u].flow-=t;
                tmp-=t;
            }
        }
    }
    return cp-tmp;
}
int Maxflow()
{
    int flow=0;
    while(BFS()){
        memset(cur,0,sizeof(cur));
        flow+=DFS(s,inf);
    }
    return flow;
}
int main()
{
   //freopen("in.txt","r",stdin);
    int a,b, c;
    while(~scanf("%d%d",&m,&n)){
        init();
        for(int i=0;i<m;i++)
        {
            scanf("%d%d%d",&a,&b,&c);
            edges[a][b].cap+=c;
        }
        s=1;t=n;
        int ans=Maxflow();
        printf("%d\n",ans);
    }
    return 0;
}