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  1. #include <bits/stdc++.h>
  2.  
  3. #define all(a) a.begin(), a.end()
  4. #define fast ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
  5. #define pb push_back
  6. #define ppi pair<int,pair<int,int>>
  7. //#define int int64_t
  8.  
  9. using namespace std;
  10. //    /\_/\
  11. //   (= ._.)
  12. //   / >  \>
  13. // encouraging cat
  14. const int INF = 10000000000000000;
  15. //const int mod = 1000000007;
  16. const int mod = 998244353;
  17. const int MAXN = 200005;
  18. //ifstream fin('xor.in');
  19. //ofstream fout('xor.out');
  20.  
  21. signed main()
  22. {
  23.     int n,m,x,y;
  24.     cin >> n >> m >> x >> y;
  25.     vector<string> combo(n);
  26.     vector<int> count(n,0);
  27.     for (int i = 0;i < n;i++)
  28.     {
  29.         cin >> combo[i];
  30.         for (int j = 0;j < m;j++)
  31.         {
  32.             if (combo[i][j] == '1')
  33.             {
  34.                 count[i]++;
  35.             }
  36.         }
  37.     }
  38.     int global_res = 0;
  39.     for (int b = 0;b < pow(2,n);b++)
  40.     {
  41.         int nbset = 0;
  42.         int total_combo = 0;
  43.         vector<int> cnt(m,0);
  44.         for (int i = 0;i < n;i++)
  45.         {
  46.             if (b & (1 << i))
  47.             {
  48.                 nbset++;
  49.                 total_combo += count[i];
  50.             }
  51.         }
  52.         int res = total_combo -(nbset * x) - (m * y);
  53.         global_res = max(res, global_res);
  54.     }
  55.     cout << global_res << '\n';
  56.     return 0;
  57. }
Success #stdin #stdout 0.01s 5280KB
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stdin 
Standard input is empty
stdout 
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https://ideone.com/io5hhR
language:
C++14 (gcc 8.3)
created:
11 days ago
visibility:
secret

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