you give positive integer array grade represent grade student university you like enter student competition order nonempty group order meet follow conditionsThe sum grade student ith group sum grade student 1th group group lastthe total number student ith group total number student 1th group group lastreturn maximum number group form Example 1input grade 10612735output 3explanation the follow possible way form 3 group student 1st group student grade 12 Sum grade 12 student count 1 2nd group student grade 67 Sum grade 6 7 13 student count 2 3rd group student grade 1035 Sum grade 10 3 5 18 Student count 3it show possible form 3 groupsExample 2input grade 88output 1explanation we form 1 group form 2 group lead equal number student group Constraints1 gradeslength 1051 gradesi 105