UVa 11150 Cola (water ver.) 11150 - Cola Time limit: 3.000 seconds http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=24&page=show_problem&problem=2091 You see the following special offer by the convenience store: " A bottle of Choco Cola for every 3 empty b...