There are 100100 questions in a paper.

- Each question carries
`+3`

marks for correct answer, -
`-1`

marks for incorrect answer i.e. one mark is deducted for each incorrect answer, -
`0`

marks for an unattempted question.

It is given that Chef received exactly �X (0≤�≤100)(0≤X≤100) marks.

Determine the **minimum** number of problems Chef marked **incorrect**.