Submission #621475

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
621475	2022-08-03 20:54:44	brobat	Necklace (Subtask 1-3) (BOI19_necklace1)	C++17	17 / 85	210 ms	35764 KiB

necklace

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#include <bits/stdc++.h>
using namespace std;
vector <int> kmp(string &a, string &b) {
    string s = b + '#' + a;
    int n = s.length();
    vector <int> p(n);
    p[0] = 0;
    for(int i = 1; i < n; i++) {
        int j = p[i - 1];
        while(j > 0 && s[i] != s[j]) {
            j = p[j - 1];
        }
        if(s[i] == s[j]) {
            j++;
        }
        p[i] = j;
    }
    vector <int> q(a.length());
    for(int i = 0; i < (int)a.length(); i++) {
        q[i] = p[i + (int)b.length() + 1];
    }
    return q;
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    
    string a, b;
 
 
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• Subtask 1: 5 / 25
• Subtask 2: 4 / 20
• Subtask 3: 8 / 40