Submission #748184

#	Time	Username	Problem	Language	Result	Execution time	Memory
748184		NemanjaSo2005	Council (JOI23_council)	C++17	100 / 100	2385 ms	335156 KiB

council

#include<bits/stdc++.h>
#define ll long long
using namespace std;
int kritv,N,M,K,maks[300005],maska[300005],glasa[300005][25],ukup[25],res[300005];
const int stepen[25]={1,2,4,8,16,32,64,128,256,512,1024,2048,4096,8192,16384,32768,65536,131072,262144,524288,1048576,2097152,4194304,8388608,16777216};

int dist[1050005][2];
int koji[1050005];
/*
0 - Moze a ne mora za to da ne glasa
1 - Mora da to da ne glasa

Dodavanje - 0 u 1 dodaje 1 cene
Ispitivanje - 1 u 0 dodaje 1 cene
*/
queue<pair<int,int> > Q[25];
pair<int,int> pp;
int main(){
   ios_base::sync_with_stdio(false);
   cin.tie(0);
   cin>>N>>M;
   kritv=N/2;
   K=(M/2);
   for(int i=1;i<=N;i++){
      for(int j=0;j<M;j++)
         cin>>glasa[i][j];
      for(int j=0;j+j<M;j++)
         swap(glasa[i][j],glasa[i][M-1-j]);
      for(int j=0;j<M;j++){
         ukup[j]+=glasa[i][j];
         maska[i]+=stepen[j]*glasa[i][j];
      }
   }
   for(int i=1;i<=N;i++)
      for(int j=0;j<M;j++)
         if(ukup[j]-glasa[i][j]>=kritv)
            maks[i]++;
   for(int i=1;i<=N;i++)
      res[i]=M+1;
   for(int i=0;i<=1050000;i++)
      dist[i][0]=dist[i][1]=M+1;
   ///BFS
   for(int i=1;i<=N;i++)
      Q[0].push({maska[i]^(stepen[M]-1),i});
   for(int q=0;q<=M;q++){
      while(Q[q].size()){
         pp=Q[q].front();
         Q[q].pop();
         if(koji[pp.first]==pp.second)
            continue;
         if(dist[pp.first][0]!=M+1 and dist[pp.first][1]!=M+1)
            continue;
         if(dist[pp.first][0]==M+1){
            dist[pp.first][0]=q;
            koji[pp.first]=pp.second;
         }
         else
            dist[pp.first][1]=q;
         for(int j=0;j<M;j++){
            if((stepen[j]&pp.first)==0)
               Q[q+1].push({pp.first^stepen[j],pp.second});
            else
               Q[q].push({pp.first^stepen[j],pp.second});
         }
      }
   }

   for(int i=1;i<=N;i++){
      int x=0;
      for(int j=0;j<M;j++){
         int kol=ukup[j]-glasa[i][j];
         if(kol==kritv)
            x+=stepen[j];
      }
      if(koji[x]==i)
         res[i]=dist[x][1];
      else
         res[i]=dist[x][0];
   }

   for(int i=1;i<=N;i++)
      cout<<maks[i]-res[i]<<"\n";
   cout<<"\n";
   return 0;
}

• Subtask 1: 8 / 8
• Subtask 2: 8 / 8
• Subtask 3: 6 / 6
• Subtask 4: 19 / 19
• Subtask 5: 15 / 15
• Subtask 6: 22 / 22
• Subtask 7: 22 / 22