$\snippet{name: op_column, sign: '-', x: '73', y: '56', z: '17'}$
Проверка:
$\snippet{name: op_column, sign: '+', x: '17', y: '56', z: '73'}$
 
$\snippet{name: op_column, sign: '+', x: '48', y: '14', z: '62'}$
Проверка:
$\snippet{name: op_column, sign: '-', x: '62', y: '14', z: '48'}$
 
$\snippet{name: op_column, sign: '-', x: '57', y: '39', z: '18'}$
Проверка:
$\snippet{name: op_column, sign: '+', x: '18', y: '39', z: '57'}$
 
$\snippet{name: op_column, sign: '+', x: '64', y: '16', z: '80'}$
Проверка:
$\snippet{name: op_column, sign: '-', x: '80', y: '16', z: '64'}$