先做一遍普通的dinic
然后再更改源点为超级源，超级源向原源加一条capacity=k && cost=0的边，再加上有费用的边跑最小费用最大流
#include <iostream>
#include <cstring>
#include <cstdio>
#include <queue>
using namespace std;
int n, m, k, ss, tt, hea[1005], cnt, uu, vv, ww, xx, maxFlow, minCost, dis[1005], pre[1005];
const int oo=0x3f3f3f3f;
bool vis[1005];
queue<int> d;
struct Edge{
int fro, nxt, too, val, cst, tmp;
}edge[20005];
void add_edge(int fro, int too, int val, int cst){
edge[cnt].fro = fro;
edge[cnt].nxt = hea[fro];
edge[cnt].too = too;
edge[cnt].val = val;
edge[cnt].tmp = cst;
edge[cnt].cst = 0;
hea[fro] = cnt++;
}
void addEdge(int fro, int too, int val, int cst){
add_edge(fro, too, val, cst);
add_edge(too, fro, 0, -cst);
}
void qwq_edge(int fro, int too, int val, int cst){
edge[cnt].nxt = hea[fro];
edge[cnt].too = too;
edge[cnt].val = val;
edge[cnt].cst = cst;
hea[fro] = cnt++;
}
void qwqEdge(int fro, int too, int val, int cst){
qwq_edge(fro, too, val, cst);
qwq_edge(too, fro, 0, -cst);
}
bool bfs(){
memset(dis, 0, sizeof(dis));
dis[ss] = 1;
d.push(ss);
while(!d.empty()){
int x=d.front();
d.pop();
for(int i=hea[x]; i!=-1; i=edge[i].nxt){
int t=edge[i].too;
if(!dis[t] && edge[i].val>0){
dis[t] = dis[x] + 1;
d.push(t);
}
}
}
return dis[tt]!=0;
}
int dfs(int x, int lim){
if(x==tt) return lim;
int addFlow=0;
for(int i=hea[x]; i!=-1 && addFlow<lim; i=edge[i].nxt){
int t=edge[i].too;
if(dis[t]==dis[x]+1 && edge[i].val>0){
int tmp=dfs(t, min(lim-addFlow, edge[i].val));
edge[i].val -= tmp;
edge[i^1].val += tmp;
addFlow += tmp;
}
}
return addFlow;
}
void dinic(){
while(bfs()) maxFlow += dfs(ss, oo);
}
bool spfa(){
memset(dis, 0x3f, sizeof(dis));
memset(pre, -1, sizeof(pre));
dis[ss] = 0;
vis[ss] = true;
d.push(ss);
while(!d.empty()){
int x=d.front();
d.pop();
vis[x] = false;
for(int i=hea[x]; i!=-1; i=edge[i].nxt){
int t=edge[i].too;
if(dis[t]>dis[x]+edge[i].cst && edge[i].val>0){
dis[t] = dis[x] + edge[i].cst;
pre[t] = i;
if(!vis[t]){
vis[t] = true;
d.push(t);
}
}
}
}
return dis[tt]!=oo;
}
void mcmf(){
while(spfa()){
int tmp=oo;
for(int i=pre[tt]; i!=-1; i=pre[edge[i^1].too])
tmp = min(tmp, edge[i].val);
for(int i=pre[tt]; i!=-1; i=pre[edge[i^1].too]){
edge[i].val -= tmp;
edge[i^1].val += tmp;
minCost += tmp * edge[i].cst;
}
}
}
int main(){
memset(hea, -1, sizeof(hea));
cin>>n>>m>>k;
ss = 1; tt = n;
for(int i=1; i<=m; i++){
scanf("%d %d %d %d", &uu, &vv, &ww, &xx);
addEdge(uu, vv, ww, xx);
}
dinic();
cout<<maxFlow<<" ";
ss = 0;
int tmp=cnt;
qwqEdge(ss, 1, k, 0);
for(int i=0; i<tmp; i+=2)
qwqEdge(edge[i].fro, edge[i].too, oo, edge[i].tmp);
mcmf();
cout<<minCost<<endl;
return 0;
}