アルゴリズム道中記〜最長共通部分列〜
#include <bits/stdc++.h>#define print(x) cout << x << endl;#define rep(i, s, n) for (long long i = s; i < (long long)(n); i++)using namespace std;using ll = long long;int main() { string S, T; cin >> S >> T; S.insert(0, " "); T.insert(0,