Distribute Medals

Surya is very good at playing the piano and hence participates in music competitions with his friends. One day he has won $M$ medals in a competition. He wants to distribute some medals among his $N$ friends. Surya wants to give $N$ bigger medals and $N$ smaller medals out of $M$ medals to $N$ of his teammates. It is given that $M$ is always greater than or to equal to $2$ × $N$. As Surya is bus