Cow and Exercise

2020 VietMX 98

Farmer John is obsessed with making Bessie exercise more! Bessie is out grazing on the farm, which consists of $n$ fields connected by $m$ directed […]

Cow and Vacation

2020 VietMX 92

Bessie is planning a vacation! In Cow-lifornia, there are $n$ cities, with $n-1$ bidirectional roads connecting them. It is guaranteed that one can reach any […]

Cow and Snacks

2020 VietMX 0

The legendary Farmer John is throwing a huge party, and animals from all over the world are hanging out at his house. His guests are […]

Cow and Haybales

2020 VietMX 0

The USA Construction Operation (USACO) recently ordered Farmer John to arrange a row of $n$ haybale piles on the farm. The $i$-th pile contains $a_i$ haybales. However, […]

Cow and Friend

2020 VietMX 0

Bessie has way too many friends because she is everyone’s favorite cow! Her new friend Rabbit is trying to hop over so they can play! […]

Cow and Message

2020 VietMX 0

Bessie the cow has just intercepted a text that Farmer John sent to Burger Queen! However, Bessie is sure that there is a secret message […]

Cow and Fields

2020 VietMX 0

Bessie is out grazing on the farm, which consists of $n$ fields connected by $m$ bidirectional roads. She is currently at field $1$, and will […]

Cow and Treats

2020 VietMX 2

After a successful year of milk production, Farmer John is rewarding his cows with their favorite treat: tasty grass! On the field, there is a […]