[Problem](https://mirror.codeforces.com/contest/1209/problem/D)↵
↵
My Observations ↵
1) among all the people who have same choices at most one could be satisfied. so I removed all except one.↵
2) now I without proper reasoning I thought that some food groups will form and for each group its size — 1 will be added to answer. ↵
3) I coded this approach using DSU and it worked I got an AC ↵
↵
but the problem is I am not able to justify the reasoning behind point number 2↵
↵
[My Solution](https://mirror.codeforces.com/contest/1209/submission/71919806)↵
Please tell me how my assumption is correct. ↵
Thanks and Regards
↵
My Observations ↵
1) among all the people who have same choices at most one could be satisfied. so I removed all except one.↵
2) now I without proper reasoning I thought that some food groups will form and for each group its size — 1 will be added to answer. ↵
3) I coded this approach using DSU and it worked I got an AC ↵
↵
but the problem is I am not able to justify the reasoning behind point number 2↵
↵
[My Solution](https://mirror.codeforces.com/contest/1209/submission/71919806)↵
Please tell me how my assumption is correct. ↵
Thanks and Regards
