pypy3和python3求助

q = int(input())
s = input()
for _ in range(q):
    x = list(input().split())
    if x[0]=='1':
        s = s+x[1]
        print(s)
    elif x[0]=='2':
        a,b = int(x[1]),int(x[2])
        s = s[a:a+b]
        print(s)
    elif x[0]=='3':
        a = int(x[1])
        s = s[:a]+x[2]+s[a:]
        print(s)
    else:
        y = s.find(x[1])
        print(y)