wtf.cpp

wtf.cpp

#include <cmath>
#include <functional>
#include <iostream>
#include <vector>

using namespace std;

vector<int> M = {2,4,7,8,14,16,28,56};

bool f1(int& j, int& k, int rows, int cols) {
  if(++k >= cols) {
    k = 0;
    if(++j >= rows) {
      return false;
    }
  }
  return true;
}

bool f2(int& j, int& k, int rows, int cols) {
  if(++j >= rows) {
    j = 0;
    if(++k >= cols) {
      return false;
    }
  }
  return true;
}

// ... more functions with signature bool(int&, int&, int, int)

vector< function<bool(int&,int&,int,int)> > F = {f1, f2 /*...*/};

vector<int> solve(int m, function<bool(int&,int&,int,int)>& f,
                       vector< vector<int> >& input)
{
  int i = 0;
  int j = 0;
  int k = 0;
  int l = 0;
  vector<int> result = {0};
  do {
    result[i] += input[j][k] * pow(2, l);
    if (++l > m) {
      l = 0;
      i++;
      result.push_back(0);
    }
  } while( f(j, k, input.size(), input[0].size()));
  return result;
}

int main(int argc, char** argv) {
  cout << "Enter number of rows: " << endl;
  int rows;
  cin >> rows;
  cout << "Enter number of cols: " << endl;
  int cols;
  cin >> cols;
  vector< vector<int> > input;
  for (int i=0; i<rows; ++i) {
    input.push_back(vector<int>());
    for (int j=0; j<cols; ++j) {
      cout << "Enter value " << i << "," << j << ":" << endl;
      int value;
      cin >> value;
      input[i].push_back(value);
    }
  }

  for ( int m: M) {
    for (auto f: F) {
      vector<int> result = solve(m, f, input);
      cout << "Result: ";
      for ( auto res: result ) {
        cout << res << ",";
      }
      cout << endl;
    }
  }
}