Codeforces Round #802 (Div. 2) 1700B. Palindromic Numbers Solution

AH Tonmoy December 01, 2022 0

Problem Link: https://codeforces.com/contest/1700/problem/B

Solution in Python :

test=int(input())
while test:
    test-=1
    num=int(input())
    str=int(input())
    str2=int("1"*num)
    if str>str2:
              print(int("1"*(num+1))-str)
    else:
             print(int("9"*num)-str)

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