Submission #928924

#	Time	Username	Problem	Language	Result	Execution time	Memory
928924		Ghulam_Junaid	Necklace (Subtask 1-3) (BOI19_necklace1)	C++17	25 / 85	1542 ms	432 KiB

necklace

#include <bits/stdc++.h>
using namespace std;

int main(){
    int n, m;
    string s, t;
    cin >> s >> t;
    
    n = s.size();
    m = t.size();

    int len = 0;
    pair<int, int> mp[3005];
    for (int i = 0; i < n; i ++){
        string tmp;
        for (int j = i; j < n; j ++){
            tmp += s[j];
            int sz = tmp.size();
            for (int k = 0; k < sz; k ++){
                string x;
                for (int l = k; l < k + sz; l ++)
                    x += tmp[l % sz];

                if (t.find(x) != string::npos and len < sz){
                    len = sz;
                    mp[len] = {i, t.find(x)};
                }
            }
        }
    }

    reverse(s.begin(), s.end());
    for (int i = 0; i < n; i ++){
        string tmp;
        for (int j = i; j < n; j ++){
            tmp += s[j];
            int sz = tmp.size();
            for (int k = 0; k < sz; k ++){
                string x;
                for (int l = k; l < k + sz; l ++)
                    x += tmp[l % sz];

                if (t.find(x) != string::npos and len < sz){
                    len = sz;
                    mp[len] = { n - (i + len - 1) - 1, t.find(x)};
                }
            }
        }
    }

    cout << len << endl;
    cout << mp[len].first << " " << mp[len].second << endl;
}

Compilation message (stderr)

necklace.cpp: In function 'int main()':
necklace.cpp:5:12: warning: variable 'm' set but not used [-Wunused-but-set-variable]
    5 |     int n, m;
      |            ^

• Subtask 1: 25 / 25
• Subtask 2: 0 / 20
• Subtask 3: 0 / 40