... m9tinhir the thi se giam mat ffi9tF;c6 cost(F;) dat max,qua trmh nay cir tiep tuc thi se c6 xu huang lam giarn gia tri ciiaL. Trong trtrong hop khong timdircc m9t gia tr]i*thoa tinh chat ... dungMmf t<i cac phep toan song song dg thirc hien cay truy vanttrong irng cling nlnr cac rang bU9C ve thai gian gifra chiing. 'Irtrong ho'p cac toan t11'tren cay latoan t11'dang ... E)jtila trong so cua nut thu-ijCij la trong s5 ciia canh(i,j)EE; pIaBAI TO.AN LA-P qCH TOI U1J TRaNG co'so myLI~U SONG SONG23so b9 xli, li,Output:M9t lich truy van vai thai gian...