D. Buying Shovels
Polycarpwantstobuyexactlynnshovels.Theshopsellspackageswithshovels.Thestorehaskktypesofpackagesthepackageoftheii-thtypeconsistsofexactlyiishovels(1≤i≤k1≤i≤k).Thestorehasaninfinitenumberofpackagesofeachtype.Polycarpwantstochooseonetypeofpackagesandthe
