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#include <bits/stdc++.h>
using namespace std;
#undef strcspn
#undef strstr
namespace panic {
size_t strlen (const char *str) {
int length = 0;
while (str[length++]) {}
return length - 1;
}
}
/**
* @brief "Complementary SPaN":返回s中第一个未出现在字符串reject中的字符的下标。
* @param s 源字符串
* @param reject 一个字符串,包含不允许出现的字符
* @return 如果存在s中的字符,且其未出现在reject串中,返回第一个这样的字符的下标;否则返回s的长度。
*/
size_t strcspn (const char *self, const char *reject) {
size_t lenReject = panic::strlen(reject);
size_t lenSelf = panic::strlen(self);
size_t i = 0;
next:
if (i == lenSelf) return i;
for (size_t j = 0; j < lenReject; ++j) {
if (self[i] == reject[j]) {
++i;
goto next;
}
}
return i;
}
/**
* @brief 查找字符串needle在haystack中第一次出现的位置
* @param haystack 目标字符串
* @param src 源字符串
* @return 返回第一次出现的位置,如果未出现返回空指针
* @par 时间复杂度O(N * M) 即可,其中N、M分别为haystack和needle的长度。
* glibc的实现采用了Knuth-Morris-Pratt算法,这是一个O(N + M) 的字符串匹配算法。它的实现见 <https://github.com/jeremie-koenig/glibc/blob/master-beware-rebase/sysdeps/x86_64/multiarch/strstr.c>。
*/
char *strstr (char *self, const char *find) {
size_t lenSelf = panic::strlen(self);
size_t lenFind = panic::strlen(find);
if (lenFind == 0) return self;
if (lenSelf < lenFind) return nullptr;
int offset = 0;
next:
if (offset + lenFind > lenSelf) return nullptr;
for (int i = 0; i < lenFind; ++i) {
if (self[offset + i] != find[i]) {
++offset;
goto next;
}
}
return self + offset;
}
//---------------------------------------
int n;
int main () {
ios::sync_with_stdio(0), cin.tie(0);
string s1, s2;
int op;
cin >> n;
for (int i = 1; i <= n; ++i) {
cin >> op >> s1 >> s2;
if (op == 1) {
cout << strcspn(s1.c_str(), s2.c_str()) << '\n';
} else if (op == 2) {
const char *res = strstr(s1.c_str(), s2.c_str());
if (res == nullptr) cout << "NOT FOUND\n";
else cout << res << '\n';
}
}
return 0;
}