def gap_factor(s,t): print(s) print(t) matches = [] for ch in s: for i in range(0,len(t)): if ch == t[i]: matches.append(i+1) print(matches) res = [] for i in matches: if i not in res: res.append(i) print(res) diff=[] for i in range(0,len(res)-1): diff.append(res[i] - res[i+1]) print(diff) return max(diff) if __name__ == '__main__': s = input() t = input() print(gap_factor(s,t))