oj.uz

답안 #1066313

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1066313 2024-08-19T17:43:56 Z NemanjaSo2005 Board Game (JOI24_boardgame) C++17
17 / 100
 1578 ms 6480 KB 
#include<bits/stdc++.h>
#define ll 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=1000;
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});
   }
}
int 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;
}
/*
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:25:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |    for(int i=0;i<stop.size();i++)
      |                ~^~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 3676 KB Output is correct
2 Correct 10 ms 5148 KB Output is correct
3 Correct 17 ms 6236 KB Output is correct
4 Correct 16 ms 5740 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 3672 KB Output is correct
2 Correct 46 ms 5256 KB Output is correct
3 Correct 29 ms 6220 KB Output is correct
4 Correct 28 ms 6096 KB Output is correct
5 Correct 75 ms 6224 KB Output is correct
6 Correct 46 ms 6000 KB Output is correct
7 Correct 25 ms 5716 KB Output is correct
8 Correct 28 ms 5864 KB Output is correct

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 3672 KB Output is correct
2 Correct 47 ms 5360 KB Output is correct
3 Correct 44 ms 6000 KB Output is correct
4 Correct 29 ms 6228 KB Output is correct
5 Correct 56 ms 6480 KB Output is correct
6 Correct 34 ms 5976 KB Output is correct
7 Correct 46 ms 5980 KB Output is correct
8 Correct 52 ms 6480 KB Output is correct
9 Correct 41 ms 6228 KB Output is correct
10 Correct 35 ms 6232 KB Output is correct

Subtask #4
0.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 3676 KB Output is correct
2 Correct 9 ms 3672 KB Output is correct
3 Correct 3 ms 3676 KB Output is correct
4 Incorrect 11 ms 3676 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 5980 KB Output is correct
2 Runtime error 1578 ms 5968 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 5980 KB Output is correct
2 Runtime error 1578 ms 5968 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 3 ms 3676 KB Output is correct
2 Correct 9 ms 3672 KB Output is correct
3 Correct 3 ms 3676 KB Output is correct
4 Incorrect 11 ms 3676 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 3676 KB Output is correct
2 Correct 10 ms 5148 KB Output is correct
3 Correct 17 ms 6236 KB Output is correct
4 Correct 16 ms 5740 KB Output is correct
5 Correct 5 ms 3672 KB Output is correct
6 Correct 46 ms 5256 KB Output is correct
7 Correct 29 ms 6220 KB Output is correct
8 Correct 28 ms 6096 KB Output is correct
9 Correct 75 ms 6224 KB Output is correct
10 Correct 46 ms 6000 KB Output is correct
11 Correct 25 ms 5716 KB Output is correct
12 Correct 28 ms 5864 KB Output is correct
13 Correct 5 ms 3672 KB Output is correct
14 Correct 47 ms 5360 KB Output is correct
15 Correct 44 ms 6000 KB Output is correct
16 Correct 29 ms 6228 KB Output is correct
17 Correct 56 ms 6480 KB Output is correct
18 Correct 34 ms 5976 KB Output is correct
19 Correct 46 ms 5980 KB Output is correct
20 Correct 52 ms 6480 KB Output is correct
21 Correct 41 ms 6228 KB Output is correct
22 Correct 35 ms 6232 KB Output is correct
23 Correct 3 ms 3676 KB Output is correct
24 Correct 9 ms 3672 KB Output is correct
25 Correct 3 ms 3676 KB Output is correct
26 Incorrect 11 ms 3676 KB Output isn't correct
27 Halted 0 ms 0 KB -