与以下代码仅变量定义不同：
```cpp
#define maxn 250
#define INF 0x3f3f3f3f
struct Edge {
int from, to, cap, flow;
Edge(int u, int v, int c, int f) : from(u), to(v), cap(c), flow(f) {}
};
struct Dinic {
int n, m, s, t;
vector<Edge> edges;
vector<int> G[maxn];
int d[maxn], cur[maxn];
bool vis[maxn];
void init(int n) {
for (int i = 0; i < n; i++) G[i].clear();
edges.clear();
}
void AddEdge(int from, int to, int cap) {
edges.push_back(Edge(from, to, cap, 0));
edges.push_back(Edge(to, from, 0, 0));
m = edges.size();
G[from].push_back(m - 2);
G[to].push_back(m - 1);
}
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 = 0; i < G[x].size(); i++) {
Edge& e = edges[G[x][i]];
if (!vis[e.to] && e.cap > e.flow) {
vis[e.to] = 1;
d[e.to] = d[x] + 1;
Q.push(e.to);
}
}
}
return vis[t];
}
int DFS(int x, int a) {
if (x == t || a == 0) return a;
int flow = 0, f;
for (int& i = cur[x]; i < G[x].size(); i++) {
Edge& e = edges[G[x][i]];
if (d[x] + 1 == d[e.to] && (f = DFS(e.to, min(a, e.cap - e.flow))) > 0) {
e.flow += f;
edges[G[x][i] ^ 1].flow -= f;
flow += f;
a -= f;
if (a == 0) break;
}
}
return flow;
}
int Maxflow(int s, int t) {
this->s = s;
this->t = t;
int flow = 0;
while (BFS()) {
memset(cur, 0, sizeof(cur));
flow += DFS(s, INF);
}
return flow;
}
};
```
by konyakest @ 2023-01-24 22:18:23
区别其实挺大的，当前弧优化假了：
```cpp
F(i,c[x],v[x].size()-1)
```
```cpp
for (int& i = cur[x]; i < G[x].size(); i++)
```
差了个 `&`，`cur[x]` 没有把处理完的边跳过，复杂度假了
by sprads @ 2023-01-24 22:26:27
@[sprads](/user/400072) 感谢！%%%，您tql
by konyakest @ 2023-01-24 22:29:56