#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ii = pair<int, int>;
template<class T> using vec = vector<T>;
#define foru(i, l, r) for(int i=(l); i<=(r); ++i)
#define ford(i, l, r) for(int i=(l); i>=(r); --i)
#define fore(x, v) for(auto &x : v)
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define fi first
#define se second
#define file "input"
void setIO() {
ios::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
if (fopen(file".in", "r")) {
freopen(file".in", "r", stdin);
freopen(file".out", "w", stdout);
}
}
const int N = 6006;
int n, m, kmp1[N], kmp2[N];
tuple<int, int, int> ans = {0, 0, 0};
string s, t, t2;
void calc(string s, int *kmp) {
kmp[sz(s)] = 0;
foru(i, 1, sz(s)-1) {
int j = kmp[i-1];
while (j > 0 && s[j] != s[i]) j = kmp[j-1];
if (s[j] == s[i]) j += 1;
kmp[i] = j;
}
}
void solve(bool rev) {
foru(i, 0, n) {
string suf = s.substr(i, n-i), pre = s.substr(0, i);
// if (rev) cout << pre << " " << suf << "\n";
reverse(all(pre));
// if (i == 2) cout << pre << " " << t2 << " | " << suf << " " << t << "\n";
calc(suf + '#' + t, kmp1); calc(pre + '#' + t2, kmp2);
// foru(j, n-i+1, n-i+m) cout << kmp1[j] << " ";
// cout << "\n";
// foru(j, i+1, i+m) cout << kmp2[j] << " ";
// cout << "\n";
// cout << sz(suf + "#" + t) << "\n";
// cout << kmp1[n+1+1] << " ";
// cout << kmp1[n-i+2] << " " << kmp2[i+2] << "\n";
foru(j, 0, m) ans = max(ans, {kmp1[n-i+j]+kmp2[i+m-j], (rev ? n-i : i) - kmp1[n-i+j], j - kmp2[i+m-j]});
// cout << get<0>(ans) << "\n";
}
}
int main() {
setIO();
cin >> s >> t;
n = sz(s); m = sz(t);
t2 = t;
reverse(all(t2));
solve(0);
reverse(all(s));
solve(1);
cout << get<0>(ans) << "\n" << get<1>(ans) << " " << get<2>(ans);
}
Compilation message
necklace.cpp: In function 'void setIO()':
necklace.cpp:20:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
20 | freopen(file".in", "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
necklace.cpp:21:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
21 | freopen(file".out", "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
261 ms |
456 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
