import requests
print("\nEnter rating: ", end="")
rate = int(input())
print()
data = requests.get(" https://codeforces.com/api/contest.list").json()
contests = []
for i in data['result']:
    if "ducational" in i['name']:
        contests.append(i['id'])
data = requests.get(" https://codeforces.com/api/problemset.problems").json()
cnt=0
for i in data['result']['problems']:
    if i['contestId'] in contests:
        try:
            if rate == i['rating']:
                cnt+=1
                print(str(cnt)+") https://codeforces.com/contest/"+str(i['contestId'])+"/problem/"+str(i['index']), i['name'])
        except:
            pass
print("\n"+str(cnt)+" questions found\n")