Submission #120119

#	Time	Username	Problem	Language	Result	Execution time	Memory
120119		OptxPrime	Sajam (COCI18_sajam)	C++11	15 / 90	298 ms	24312 KiB

sajam

#include <iostream>
#include <vector>
#include <cmath>
#include <algorithm>
#include<queue>
#include<string.h>
#include<map>

using namespace std;
#define pb push_back
#define mp make_pair
#define tl TypeLetter
#define uc UndoCommands
#define gl GetLetter

  long long n,k;
    string s[2010];
    long long dist[2010][2010][2];
    vector<long long>block[2010];

    /// ovo bi trebalo da rjesi sve osim K=N

    long long hamming( int a, int b )
    {
        long long ans=0;
      for( int i=0;i<block[a].size();i++ ){
       //     cout << a << " " << b << " " << i << " "<< block[a][i] << " tarik " <<endl;
        ans+= __builtin_popcount( block[a][i]^block[b][i] );
      }
      return ans;
    }
    string kontra( string s )
    {
        string ans="";
        ans.resize(n);
        for( int i=0;i<n;i++ ){
            if( s[i]=='x' ) ans[i]='o';
            else ans[i]='x';
        }
        return ans;
    }

int main()
{

    cin>>n>>k;
    //cout << kontra( "xoxx" )<<endl;
  // // cout<<"  pasha " <<endl;
    for( int i=0;i<2*n;i++ ){
           // cout<<i<<" lalala  " <<endl;
            if( i<n )
            cin>>s[i];
            else s[i]=kontra( s[i-n] );
        long long curr=0;
        for( long long j=0;j<=n;j++ ){
             //   cout <<j<< " aa " <<endl;
            if( (j%64LL==0 && j>0) || ( j==n ) ){
            //    if( i==0 ) cout<< j << " " <<curr << " wtf "<<endl;
                block[i].pb( curr );
                curr=0;
        if(j==n) break;
            }
            if( s[i][j]=='x' ) {
                    curr|=( 1<<( j%64LL ) );
              //      cout << i << " " << j << " " << ( j%64 ) << " namir " <<endl;
            }
        }
    }

    //cout << block[1][0] << " eto " <<endl;
    long long res=100000000;

    for( int i=0;i<n;i++ ){
            long long sum0=0,sum1=0;
        for( int j=0;j<n;j++ ){
                if( i==j ) continue;
            dist[i][j][0] = hamming( i,j );
           // string tmp= kontra(  ) ;
            dist[i][j][0]=min( dist[i][j][0], hamming( i,j+n ) );
            dist[i][j][1]= hamming( i+n,j );
            dist[i][j][1]=min( dist[i][j][1], hamming( i+n,j+n ) );
         //   cout<<i << " " << j << " " << dist[i][j][0] << " " << dist[i][j][1] << " tjt " <<endl;
            sum0+=dist[i][j][0];
            sum1+=dist[i][j][1];
        }
        res=min( res,sum0 );
        res=min(res,sum1);
    }

    //cout<<res<<endl;
    if( res<=k ) cout<<"DA"<<endl;
    else cout<<"NE"<<endl;


    return 0;
}

/*
5
1
2
1

2
2
*/

Compilation message (stderr)

sajam.cpp: In function 'long long int hamming(int, int)':
sajam.cpp:26:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for( int i=0;i<block[a].size();i++ ){
                    ~^~~~~~~~~~~~~~~~

• Subtask 1: 15 / 15
• Subtask 2: 0 / 15
• Subtask 3: 0 / 15
• Subtask 4: 0 / 15
• Subtask 5: 0 / 15
• Subtask 6: 0 / 15