terminate called after throwing an instance of 'std::out_of_range'

[wh44496]

how could I solve this problem?
"terminate called after throwing an instance of 'std::out_of_range'
what(): vector::_M_range_check: __n (which is 720) >= this->size() (which is 720)
Aborted"
thank you for your help!

[benfulton]

Probably making your families smaller would fix it. There are some hints here.