1 #include<iostream>
2 #include<algorithm>
3 #include<cstdio>
4 #include<cstring>
5 #include<cmath>
6 #include<cstdlib>
7 #include<vector>
8 using namespace std;
9 typedef long long ll;
10 typedef long double ld;
11 typedef pair<int,int> pr;
12 const double pi=acos(-1);
13 #define rep(i,a,n) for(int i=a;i<=n;i++)
14 #define per(i,n,a) for(int i=n;i>=a;i--)
15 #define Rep(i,u) for(int i=head[u];i;i=Next[i])
16 #define clr(a) memset(a,0,sizeof(a))
17 #define pb push_back
18 #define mp make_pair
19 #define fi first
20 #define sc second
21 #define pq priority_queue
22 #define pqb priority_queue <int, vector<int>, less<int> >
23 #define pqs priority_queue <int, vector<int>, greater<int> >
24 #define vec vector
25 ld eps=1e-9;
26 ll pp=1000000007;
27 ll mo(ll a,ll pp){if(a>=0 && a<pp)return a;a%=pp;if(a<0)a+=pp;return a;}
28 ll powmod(ll a,ll b,ll pp){ll ans=1;for(;b;b>>=1,a=mo(a*a,pp))if(b&1)ans=mo(ans*a,pp);return ans;}
29 void fre() { freopen("c://test//input.in", "r", stdin); freopen("c://test//output.out", "w", stdout); }
30 //void add(int x,int y,int z){ v[++e]=y; next[e]=head[x]; head[x]=e; cost[e]=z; }
31 int dx[5]={0,-1,1,0,0},dy[5]={0,0,0,-1,1};
32 ll read(){ ll ans=0; char last=' ',ch=getchar();
33 while(ch<'0' || ch>'9')last=ch,ch=getchar();
34 while(ch>='0' && ch<='9')ans=ans*10+ch-'0',ch=getchar();
35 if(last=='-')ans=-ans; return ans;
36 }
37 #define M 1000
38 #define N 1000
39 const int INF=1<<30;
40 int head[N],level[N],q[N],e,n,m;
41 struct E_node{
42 int v,f,Next;
43 }edge[M];
44 void add(int x,int y,int z){
45 edge[++e].v=y; edge[e].f=z; edge[e].Next=head[x]; head[x]=e;
46 edge[++e].v=x; edge[e].f=0; edge[e].Next=head[y]; head[y]=e;
47 }
48 int bfs(int s,int t){
49 memset(level,0,sizeof(level));
50 level[s]=1;
51 int h=0,t_=1; q[h]=s;
52 while (h<t_){
53 int x=q[h++];
54 if (x==t) return 1;
55 for (int i=head[x];i;i=edge[i].Next){
56 int v=edge[i].v,f=edge[i].f;
57 if (!level[v] && f>0){
58 level[v]=level[x]+1;
59 q[t_++]=v;
60 }
61 }
62 }
63 return 0;
64 }
65 int dfs(int u,int maxf,int t){
66 if (u==t) return maxf;
67 int ret=0;
68 for (int i=head[u];i;i=edge[i].Next){
69 int v=edge[i].v,f=edge[i].f;
70 if (level[v]==level[u]+1 && f>0){
71 int Min=min(maxf-ret,f);
72 f=dfs(v,Min,t);
73 edge[i].f-=f;
74 edge[i^1].f+=f;
75 ret+=f;
76 if (ret==maxf) return ret;
77 }
78 }
79 return ret;
80 }
81 int Dinic(int s,int t){
82 int ans=0;
83 while (bfs(s,t)) ans+=dfs(s,INF,t);
84 return ans;
85 }
86 int main(){
87 n=read(),m=read();
88 for (int i=1;i<=n;i++){
89 int x=read(),y=read(),c=read();
90 add(x,y,c);
91 }
92 printf("%d\n",Dinic(1,m));
93 return 0;
94 }
