#include<iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
#include<queue>
using namespace std;
#define MAXN 205
#define MAXM 1000
#define INF 0x3f3f3f3f
struct Edge {
int v,c,next;
} e[MAXM];
int eid,NV;
int p[MAXN];
void insert(int u,int v,int c){ //插入一条从u向v,容量为c的弧。
e[eid].v=v;
e[eid].next=p[u];
e[eid].c=c;
p[u]=eid++;
}
void addedge(int u,int v,int c){ //用insert插入网络中的弧
insert(u,v,c);
insert(v,u,0); //插入一条反方向,当前容量为0的弧
}
int d[MAXN];
int num[MAXN];
void bfs(int vt)
{
memset(d,-1,sizeof(d));
memset(num,0,sizeof(num));
d[vt]=0;
num[d[vt]]++;
queue<int>que;
que.push(vt);
while(!que.empty()) {
int u=que.front();
que.pop();
for(int i=p[u]; i!=-1; i=e[i].next) {
int v=e[i].v;
if(d[v]!=-1)continue;
d[v]=d[u]+1;
num[d[v]]++;
que.push(v);
}
}
}
int pre[MAXN];
int cur[MAXN];
int SAP(int s,int t)
{
bfs(t);
memset(pre,-1,sizeof(pre));
memcpy(cur,p,sizeof(p));
int u=pre[s]=s,flow=0,aug=INF;
num[0]=NV;
while(d[s]<NV) {
bool flag=false;
for(int &i=cur[u]; i!=-1; i=e[i].next) {
int v=e[i].v;
if(e[i].c&&d[u]==d[v]+1) {
flag=true;
pre[v]=u;
u=v;
aug=min(aug,e[i].c);
if(v==t) {
flow+=aug;
for(u=pre[v]; v!=s; v=u,u=pre[u]) {
e[cur[u]].c-=aug;
e[cur[u]^1].c+=aug;
}
aug=INF;
}
break;
}
}
if(flag)continue;
int minlevel=NV;
for(int i=p[u]; i!=-1; i=e[i].next) {
int v=e[i].v;
if(e[i].c&&d[v]<minlevel) {
minlevel=d[v];
cur[u]=i;
}
}
if(--num[d[u]]==0)break;
d[u]=minlevel+1;
num[d[u]]++;
u=pre[u];
}
return flow;
}
int main()
{
int u,v,w,m,n,s,t;
while(cin>>m>>n){
s=1,t=n,NV=n,eid=0;
memset(p,-1,sizeof(p));
while(m--){
scanf("%d%d%d",&u,&v,&w);
addedge(u,v,w);
}
printf("%d\n",SAP(s,t));
}
return 0;
}
#include<iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
#include<queue>
using namespace std;
#define MAXN 205
#define MAXM 1000
#define INF 0x3f3f3f3f
struct Edge {
int v,c,next;
} e[MAXM];
int eid,NV;
int p[MAXN];
void insert(int u,int v,int c){ //插入一条从u向v,容量为c的弧。
e[eid].v=v;
e[eid].next=p[u];
e[eid].c=c;
p[u]=eid++;
}
void addedge(int u,int v,int c){ //用insert插入网络中的弧
insert(u,v,c);
insert(v,u,0); //插入一条反方向,当前容量为0的弧
}
int gap[MAXN];
int dis[MAXN];
int cur[MAXN];
int pre[MAXN];
int rec[MAXN];
int S,T; //S是源点,T是汇点。
void BFS()
{
int i;
for(i = 0; i <= T; i++) dis[i] = INF;
queue<int> q;
q.push(T);
dis[T] = 0;
while(!q.empty())
{
int u = q.front();
q.pop();
gap[dis[u]]++;
for(i = p[u]; i != -1; i = e[i].next)
{
int v = e[i].v;
if(dis[v] == INF && e[i^1].c)
{
dis[v] = dis[u] + 1;
q.push(v);
}
}
}
}
int SAP()
{
int i;
int u = pre[S] = S, Maxflow = 0, flow = INF;
for(i = 0; i <= T; i++)//这里 T 为最大顶点编号
{
gap[i] = 0;
cur[i] = p[i];
}
BFS();
while(dis[S] <= T)
{
if(u == T)
{
Maxflow += flow;
for(; u != S; u = pre[u])
{
e[rec[u]].c -= flow;
e[rec[u]^1].c += flow;
}
flow = INF;
}
for(i = cur[u]; i != -1; i = e[i].next)
{
int v = e[i].v;
if(e[i].c && dis[u] == dis[v] + 1)
{
flow = min(flow, e[i].c);
pre[v] = u;
rec[v] = i;
cur[u] = i;//当前弧优化
u = v;
break;
}
}
if(i == -1)
{
int mindis = T + 1;//T是顶点数
if((--gap[dis[u]]) == 0) break;//间隙优化
for(i = cur[u] = p[u]; i != -1; i = e[i].next)
{
if(e[i].c && mindis > dis[e[i].v])
{
mindis = dis[e[i].v];
}
}
gap[dis[u] = mindis+1]++;
u = pre[u];
}
}
return Maxflow;
}
int main()
{
int u,v,w,m,n;
while(cin>>m>>n){
S=1,T=n,NV=n,eid=0;
memset(p,-1,sizeof(p));
while(m--){
scanf("%d%d%d",&u,&v,&w);
addedge(u,v,w);
}
printf("%d\n",SAP());
}
return 0;
}