[JLOI2011]飞行路线 分层图最短路

  裸的分层图最短路，SPFA+SLF解决  bitset数组下标开反 RE了半天。。。。

  

#include 
#include 
#include 
#include 
#include 
#include 
#define MAXN 210000
#define FR first
#define SC second
#define MP make_pair
#define INF 100000000
using namespace std;
bitset<11> vis[MAXN];
typedef pair PII;
deque q;
int dis[MAXN][11];
int n,m,s,t,lim,cnt;
struct node
{
    int p,next,w;
}edge[MAXN];
int head[MAXN];
void insert(int a,int b,int c)
{
    edge[++cnt].p=b;
    edge[cnt].next=head[a];
    edge[cnt].w=c;
    head[a]=cnt;
}
void SPFA()
{
    for (int i=1;i<=n;++i) for (int j=0;j<=lim;++j) dis[i][j]=INF;
    dis[s][0]=0;
    for (int i=1;i<=n;++i) vis[i].reset();
    vis[s][0]=true;
    q.push_back(MP(s,0));
    while (!q.empty())
    {
        int u=q.front().FR,time=q.front().SC;
        q.pop_front();
        vis[u][time]=false;
        for (int k=head[u];k;k=edge[k].next)
        {
            int v=edge[k].p;
            for (int op=0;op<=1;++op)
            {
                if (op+time>lim) break;
                int tmp;
                if (op) tmp=0; else tmp=edge[k].w;
                if (tmp+dis[u][time]>n>>m>>lim>>s>>t;
    s++,t++;
    int x,y,z;
    for (int i=1;i<=m;++i)
    {
        scanf("%d%d%d",&x,&y,&z);
        ++x,++y;
        insert(x,y,z);
        insert(y,x,z);
    }
    SPFA();
    int ans=INF;
    for (int i=0;i<=lim;++i) ans=min(ans,dis[t][i]);
    cout<