UVA 10187 From Dusk Till Dawn /PC 110907

不吐槽。。

 #include <iostream>
 #include <map>
 #include <queue>

 //无语的水题。节哀吧。且这道题不严谨，因为没说是无环。算了，不吐槽了。优先队列+BFS 

 using namespace std;
 const int inf=;
 const int MAxN=;
 const int MAXM=;
 typedef struct ei{
     int v;
     int begin;
     int ends;
 }edge;
 vector<edge>Edge[MAxN];
 typedef struct ci{
     int city;
     int litre;
     int artime;
     bool operator<(const ci &A)const {
         return (litre>A.litre) ;
     }
 }City;
 City tmp,pushed;
 int m,tot;
 int start_city,end_city;
 int LITRES;

 void init(){
     for(int i=;i<MAxN;i++)
     Edge[i].clear();
 }

 void addedge(int u,int v,int be,int en){
     Edge[u].push_back((edge){v,be,en});
 }

 bool slove(){
     int now; int tmptime,pushtime;
     priority_queue<City>que;
     tmp.city=start_city; tmp.artime=; tmp.litre=;
     que.push(tmp);
     while(!que.empty()){
         tmp=que.top();
         que.pop();
         now=tmp.city;
         if(now==end_city){
             LITRES=tmp.litre;
             return true;
         }
         for(int e=;e<Edge[now].size();e++){
              tmptime=tmp.artime; pushtime=Edge[now][e].begin;
              int used=tmp.litre;
             if(pushtime<tmptime){
                 used++;
             }
             que.push((City){Edge[now][e].v,used,Edge[now][e].ends});
         }
     }
     return false;
 }

 int main(){
     int T; int from,to; int Cas=;
     string start,ends; int stt,edt,waste;
     cin>>T;
     while(T--){
         Cas++;
         init();
         map<string,int>citys;
         cin>>m;
         for (int i = ; i <= m; i++)
         {
             cin >> start >> ends >> stt >> waste;
             if (citys.find(start) == citys.end())
             {
                 from = citys.size();
                 citys[start] = from;
             }
             else
                 from = citys[start];

             if (citys.find(ends) == citys.end())
             {
                 to = citys.size();
                 citys[ends] = to;
             }
             else
                 to = citys[ends];
             if(((stt>=)||(stt<=&&stt>=))){   //我调了一天，把自己原来写的改得面目全非，对着别人的改啊改
             //都几乎改成别人的了，终于，一道水题，让我过了。当我把(stt>=18&&stt<=24)改成(stt>=18)之后，过了。哈哈哈
             //坑爹的测试数据啊。肯定是有测试数据超过了24。尼玛，还我一早上的时间，kao，一万个操。。 还以为是我的算法错了呢
             //原来是测试数据坑..
                 if(stt<=)
                 stt+=;
                 edt=stt+waste;
                 if(edt<=){
                 Edge[from].push_back((edge){to,stt,edt});
                 }
             }

         }
         cin>>start>>ends;
         if(start==ends){
             cout << "Test Case " << Cas << "." << endl;
             cout << "Vladimir needs 0 litre(s) of blood." << endl;
             continue;
         }
             if(citys.find(start)==citys.end()
                 ||citys.find(ends)==citys.end()){
             cout << "Test Case " << Cas << "." << endl;
             cout << "There is no route Vladimir can take." << endl;
             continue;
             }
         start_city=citys[start]; end_city=citys[ends];
         if(slove()){
             cout << "Test Case " << Cas << "." << endl;
             cout << "Vladimir needs " << LITRES << " litre(s) of blood." << endl;
         }
         else {
             cout << "Test Case " << Cas << "." << endl;
             cout << "There is no route Vladimir can take." << endl;
         }
     }
     return ;
 }