문제
승환이는 팰린드롬을 좋아한다. 지금 승환이의 자동차의 주행 거리계에 100000이 적혀있다. 승환이는 1km만 더 주행을 하면 100001이 된다! 승환이는 엄청나게 흥분했다.
주행 거리계에 적혀져 있는 수가 주어졌을 때, 몇 km를 더 주행하면 팰린드롬이 되는지 구하는 프로그램을 작성하시오. 승환이는 모든 자리가 팰린드롬이 되어야 한다. 따라서, 주행 거리계에 00121인 경우에는 팰린드롬이 아니다.
출력
각 테스트 케이스에 대해서 주행 거리계의 수가 팰린드롬이 되기 위해 주행해야 하는 최소 거리를 출력한다. 만약 이미 팰린드롬이라면 0을 출력한다.
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aW5lLCB3aXRoIG5vIGV4dHJhIHNwYWNlcyBhbmQgbm8gYmxhbmsgbGluZXMgYmV0d2VlbiBvdXRwdXRzLjxcL3A+XHJcbiIsImhpbnQiOiIiLCJvcmlnaW5hbCI6IjEiLCJodG1sX3RpdGxlIjoiMCIsInByb2JsZW1fbGFuZ190Y29kZSI6IkVuZ2xpc2gifV0=