求助有点好奇这个为什么不过

q = int(input())
st = input()
for _ in range(q):
g = input().strip().split()
t = int(g[0])
if t == 1:
st += g[1]
print(st)
if t == 2:
a, b = int(g[1]),int(g[2])
st = st[a:a+b]
print(st)
if t==3:
a, b = int(g[1]), g[2]
st = st[0:a]+b+st[a:]
print(st)
if t==4:
print(st.find(g[1]))

https://www.luogu.com.cn/problem/P5734

会不会有超出数组下标的情况？

所以为什么