Read the following dialogue.

Udin : "I want to tell how our class won the First Prize of the Classroom Competition."

Lina : "Let's guide Udin to tell how our class won the First Prize of the Classroom Competition. How did you know the Classroom Competition?"

Udin : "The principal announced the Classroom Competition on Monday in the flag ceremony."

Edo : "Okay. What did you do then?"

Udin : "When we were back to the classroom, we realized that many desks and chairs are old and dirty. Some had loose legs."

Lina : "And then?"

Udin : "In the afternoon, we talked and agreed to come on Saturday to fix them."

Lina : "What did we bring to work on Saturday?"

Udin : "On Saturday, each of us brought something from home, like soap, cloth, a broom, a mop, nails, a hammer, a duster, and so on."

Edo : "What did the students do with the desks and chairs?"

Udin : "Some of us washed the desks and the chairs. Some furnished them. Some fixed the legs."

Lina : "So, we won the competition!"

Udin : "Yes. Now our desks and chairs are clean and strong. And we won the First Prise of the Classroom Competition."

From the dialogue, can you infer how the students feel when they won the Classroom Competition?