unsigned int Findpairs(const std::vector<std::vector<unsigned int>>& A) {
    unsigned int count = 0;

    for (unsigned int i = 0; i < (A.size()-1); i++) {
        for (unsigned int j = 0; j < (A[i].size()-1); j++){
            if(A[i][j]==1 && A[i+1][j]==1 && A[i+1][j+1]==1){
                count++;
            }
        }
    }

    return (count);
}