oj.uz

답안 #1066323

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1066323 2024-08-19T17:56:00 Z NemanjaSo2005 Board Game (JOI24_boardgame) C++17
17 / 100
 48 ms 8244 KB 
#include<bits/stdc++.h>
#define ll long long
#define int long long
using namespace std;
const int maxn=5e4+5;
vector<int> graf[maxn];
ll N,M,K,poz[maxn],res[maxn],dist[maxn],d1[maxn],d2[maxn],cena[maxn],propval[maxn];
bool nexttostop[maxn];
const int barem=20;
int prosli[maxn],pvred;
string stop;
priority_queue<pair<ll,ll>> PQ;
queue<pair<int,int>> Q;
void input(){
   ios_base::sync_with_stdio(false);
   cin.tie(0);
   cin>>N>>M>>K;
   while(M--){
      int a,b;
      cin>>a>>b;
      graf[a].push_back(b);
      graf[b].push_back(a);
   }
   cin>>stop;
   stop="0"+stop+"0000";
   for(int i=0;i<stop.size();i++)
      stop[i]-='0';
   for(int i=1;i<=K;i++)
      cin>>poz[i];
 //  cout<<"UNEO INPUT"<<endl;
}
void BFS(){
   pvred++;
   for(int i=1;i<=N;i++)
      dist[i]=1e18;
   while(Q.size()){
      auto x=Q.front();
      Q.pop();
      int tren=x.first;
      int d=x.second;
    //  cout<<tren<<" "<<d<<endl;
      if(prosli[tren]==pvred)
         continue;
      prosli[tren]=pvred;
      dist[tren]=d;
      for(int y:graf[tren])
         Q.push({y,d+1});
   }
}
void solve1(){
   int poc=poz[1];
   Q.push({poc,0});
   BFS();
   for(int i=1;i<=N;i++)
      cout<<dist[i]<<"\n";
}
void calcdist(){
   for(int i=1;i<=N;i++){
      nexttostop[i]=false;
      for(int x:graf[i])
         nexttostop[i]|=stop[x];
   }
   for(int i=1;i<=N;i++)
      if(stop[i])
         Q.push({i,0});
   BFS();
   for(int i=1;i<=N;i++)
      d1[i]=dist[i];
   for(int i=1;i<=N;i++){
      if(d1[i]==0){
         if(nexttostop[i])
            d1[i]=1;
         else
            d1[i]=2;
      }
   }/*
   for(int i=1;i<=N;i++)
      cout<<d1[i]<<" ";
   cout<<endl;*/
   //cout<<"OVDE"<<endl;
   for(int i=1;i<=N;i++)
      d2[i]=1e18;
   for(int i=1;i<=N;i++)
      if(nexttostop[i] and stop[i])
         PQ.push({-1,i});
   pvred++;
   while(PQ.size()){
      auto aa=PQ.top();
      PQ.pop();
      int tren=aa.second;
      int d=-aa.first;
      if(prosli[tren]==pvred)
         continue;
      prosli[tren]=pvred;
      d2[tren]=d;
      for(int x:graf[tren])
         PQ.push({-(d+1-stop[tren]),x});
   }

}
void calcchange(){
   for(int i=2;i<=K;i++){
      int x=poz[i];
      for(int i=1;i<=barem;i++)
         cena[i]+=min(d1[x]+2*(i-1),d2[x]+(i-1));
   }
   for(int i=barem;i>=2;i--)
      cena[i]-=cena[i-1];
}
void Dijkstra(){
   pvred++;
   while(PQ.size()){
      auto aa=PQ.top();
      PQ.pop();
      int tren=aa.second;
      ll d=-aa.first;
      if(prosli[tren]==pvred)
         continue;
     // cout<<tren<<" "<<d<<endl;
      prosli[tren]=pvred;
      dist[tren]=min(dist[tren],d);
      if(stop[tren] and propval[tren]!=d)
         continue;
      for(int x:graf[tren])
         PQ.push({-(d+1),x});
   }
}
signed main(){
   input();
   bool hasstop=false;
   for(int i=1;i<=N;i++)
      if(stop[i])
         hasstop=true;
   if(hasstop==false){
      solve1();
      return 0;
   }

   calcdist();
   //cout<<"AAA"<<endl;
   calcchange();
   //cout<<"BB"<<endl;

  /* cout<<"CENE"<<endl;
   for(int i=1;i<=N;i++)
      cout<<cena[i]<<" ";
   cout<<endl;
*/
   for(int i=1;i<=N;i++)
      dist[i]=res[i]=1e18;
   int poc=poz[1];
   //dist[poc]=res[poc]=0;
   for(int i=1;i<=N;i++)
      propval[i]=-1;
   propval[poc]=0;
   PQ.push({0,poc});
   Dijkstra();

  /* for(int i=1;i<=N;i++)
      cout<<dist[i]<<" ";
   cout<<endl;
*/
   for(int i=1;i<=N;i++)
      res[i]=min(dist[i],res[i]);
   bool change;
   for(int it=1;it<=barem;it++){
      for(int i=1;i<=N;i++)
         propval[i]=-1;
      for(int i=1;i<=N;i++)
         if(stop[i] and dist[i]<1e17){
            ll d=dist[i]+cena[it];
            PQ.push({-d,i});
            propval[i]=d;
         }
      for(int i=1;i<=N;i++)
         dist[i]=1e18;
      Dijkstra();
      change=false;
      for(int i=1;i<=N;i++)
         if(dist[i]<res[i]){
            res[i]=dist[i];
            change=true;
         }
      if(change==false)
         break;
   }
   if(change)
      return -1;
   for(int i=1;i<=N;i++)
      cout<<res[i]<<"\n";
   return 0;
}
/*
3 2 3
1 2
2 3
010
1 3 3

7 7 3
1 6
2 6
2 3
3 4
4 5
5 6
6 7
1110101
1 3 5

15 15 2
1 2
1 10
2 3
3 4
4 5
5 6
6 7
7 8
7 10
8 9
10 11
11 12
12 13
13 14
14 15
000000111100000
1 15
*/

Compilation message

Main.cpp: In function 'void input()':
Main.cpp:26:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |    for(int i=0;i<stop.size();i++)
      |                ~^~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4696 KB Output is correct
2 Correct 11 ms 5976 KB Output is correct
3 Correct 17 ms 7004 KB Output is correct
4 Correct 15 ms 6912 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 4700 KB Output is correct
2 Correct 31 ms 6032 KB Output is correct
3 Correct 34 ms 7088 KB Output is correct
4 Correct 24 ms 6996 KB Output is correct
5 Correct 48 ms 6840 KB Output is correct
6 Correct 45 ms 6744 KB Output is correct
7 Correct 25 ms 6720 KB Output is correct
8 Correct 28 ms 6792 KB Output is correct

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4696 KB Output is correct
2 Correct 30 ms 5980 KB Output is correct
3 Correct 48 ms 6828 KB Output is correct
4 Correct 26 ms 6996 KB Output is correct
5 Correct 35 ms 7088 KB Output is correct
6 Correct 34 ms 6996 KB Output is correct
7 Correct 46 ms 6748 KB Output is correct
8 Correct 31 ms 7084 KB Output is correct
9 Correct 35 ms 8244 KB Output is correct
10 Correct 39 ms 8112 KB Output is correct

Subtask #4
0.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4700 KB Output is correct
2 Correct 7 ms 4700 KB Output is correct
3 Correct 3 ms 4796 KB Output is correct
4 Incorrect 9 ms 4696 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #5
0.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 44 ms 6748 KB Output is correct
2 Runtime error 31 ms 7004 KB Execution failed because the return code was nonzero
3 Halted 0 ms 0 KB -

Subtask #6
0.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 44 ms 6748 KB Output is correct
2 Runtime error 31 ms 7004 KB Execution failed because the return code was nonzero
3 Halted 0 ms 0 KB -

Subtask #7
0.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4700 KB Output is correct
2 Correct 7 ms 4700 KB Output is correct
3 Correct 3 ms 4796 KB Output is correct
4 Incorrect 9 ms 4696 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #8
0.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4696 KB Output is correct
2 Correct 11 ms 5976 KB Output is correct
3 Correct 17 ms 7004 KB Output is correct
4 Correct 15 ms 6912 KB Output is correct
5 Correct 5 ms 4700 KB Output is correct
6 Correct 31 ms 6032 KB Output is correct
7 Correct 34 ms 7088 KB Output is correct
8 Correct 24 ms 6996 KB Output is correct
9 Correct 48 ms 6840 KB Output is correct
10 Correct 45 ms 6744 KB Output is correct
11 Correct 25 ms 6720 KB Output is correct
12 Correct 28 ms 6792 KB Output is correct
13 Correct 3 ms 4696 KB Output is correct
14 Correct 30 ms 5980 KB Output is correct
15 Correct 48 ms 6828 KB Output is correct
16 Correct 26 ms 6996 KB Output is correct
17 Correct 35 ms 7088 KB Output is correct
18 Correct 34 ms 6996 KB Output is correct
19 Correct 46 ms 6748 KB Output is correct
20 Correct 31 ms 7084 KB Output is correct
21 Correct 35 ms 8244 KB Output is correct
22 Correct 39 ms 8112 KB Output is correct
23 Correct 2 ms 4700 KB Output is correct
24 Correct 7 ms 4700 KB Output is correct
25 Correct 3 ms 4796 KB Output is correct
26 Incorrect 9 ms 4696 KB Output isn't correct
27 Halted 0 ms 0 KB -