Bob 85
Alice 92
Chris 78
END

Chris:78
Bob:85
Alice:92

class Student:
    def __init__(self, name, score):
        self.name=name; self.score=score
    def __lt__(self, other):
        return self.score < other.score
    def __repr__(self):
        return f'{self.name}:{self.score}'
students=[]
while True:
    line=input().strip()
    if line=='END': break
    name,score=line.split()
    students.append(Student(name,int(score)))
for s in sorted(students):
    print(s)