https://codeforces.com/problemset/problem/138/D

https://vjudge.net/problem/CodeForces-138D

https://codeforces.com/problemset/problem/123/D

https://vjudge.net/problem/CodeForces-123D

https://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=2292 https://www.acmicpc.net/problem/22496

https://vjudge.net/problem/Aizu-2292 https://vjudge.net/problem/Baekjoon-22496

なお、yukicoderには$|S|,|T|$の制約が10倍になったこと以外は同じ問題「Common Palindromes Extra」が存在する https://yukicoder.me/problems/no/263 https://vjudge.net/problem/Yukicoder-263

https://onlinejudge.u-aizu.ac.jp/challenges/search/titles/2214

https://vjudge.net/problem/Aizu-2214

EDPCの問題の若干のネタバレを含みます

https://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=2212

https://vjudge.net/problem/Aizu-2212

https://onlinejudge.u-aizu.ac.jp/challenges/search/titles/2164 https://www.acmicpc.net/problem/22623

https://vjudge.net/problem/Aizu-2164 https://vjudge.net/problem/Baekjoon-22623

https://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=1312

https://vjudge.net/problem/Aizu-1312

https://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=1070&lang=ja

https://vjudge.net/problem/Aizu-1070