#include <bits/stdc++.h>
using namespace std;
int p1[6002], p2[6002];
void fil(string s, int *p)
{
for(int i = 1; i < s.size(); i ++)
{
int j = p[i - 1];
while (j && s[i] != s[j])
j = p[j - 1];
if (s[i] == s[j])
j ++;
p[i] = j;
}
}
tuple<int, int, int> solve(string s, string t, bool rev)
{
int n = s.size(), m = t.size();
tuple<int, int, int> ans = {0, 0, 0};
for (int i = 0; i < n; i ++)
{
string s1 = s.substr(0, i), s2 = s.substr(i, n - i);
reverse(s1.begin(), s1.end());
string t1 = t, t2 = t;
reverse(t2.begin(), t2.end());
fil(s1 + "#" + t2, p1);
fil(s2 + "#" + t2, p2);
for (int j = 1; j <= m; j ++)
ans = max(ans,{
p1[i + j] + p2[n + m - i - j],
i - p1[i + j],
rev ? m - j - p2[n + m - i - j] : j - p1[i + j]
});
}
return ans;
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(0);
string s, t;
cin >> s >> t;
tuple<int, int, int> ans = solve(s, t, false);
reverse(t.begin(), t.end());
ans = max(ans, solve(s, t, true));
cout << get<0>(ans) << '\n' << get<1>(ans) << " " << get<2>(ans);
return 0;
}
Compilation message
necklace.cpp: In function 'void fil(std::string, int*)':
necklace.cpp:9:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
9 | for(int i = 1; i < s.size(); i ++)
| ~~^~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Partially correct |
198 ms |
592 KB |
Output is partially correct |
| 2 |
Incorrect |
144 ms |
600 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
