def best_student(students:dict):
    best_name = ''
    best_score = -float('inf')
    for key,value in students.items():
        if value > best_score:
            best_score = value
            best_name = key
    return {best_name:best_score}


if __name__ == '__main__':
    students = {
        'a': 100,
        'b': 90,
        'c': 80,
        'd': 70,
        'e': 60,
        'f': 50,
        'g': 110,
        'h': 30,
        'i': 20,
        'j': 10,
    }
    print(best_student(students))