Submission #1016065

#	Time	Username	Problem	Language	Result	Execution time	Memory
1016065		vjudge1	Bajka (COCI20_bajka)	C++17	70 / 70	62 ms	804 KiB

bajka

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

const int N = 305;
int n, m, dp[N][N];
string s, t;
vector<int> inds[26];

int main(){
    cin >> n >> m >> s >> t;

    for (int i = 0; i < n; i ++)
        inds[s[i] - 'a'].push_back(i);

    for (int j = 1; j < m; j ++){
        char want = t[m - j];
        for (int i = 0; i < n; i ++){
            dp[i][j] = 1e9;
            for (int k : inds[s[i] - 'a']){
                if (k  - 1 >= 0 and s[k - 1] == want)
                    dp[i][j] = min(dp[i][j], abs(i - k) + 1 + dp[k - 1][j - 1]);
                if (k + 1 < n and s[k + 1] == want)
                    dp[i][j] = min(dp[i][j], abs(i - k) + 1 + dp[k + 1][j - 1]);
            }
        }
    }

    int ans = 1e9;
    for (int i : inds[t[0] - 'a'])
        ans = min(ans, dp[i][m - 1]);

    if (ans == 1e9)
        ans = -1;
    cout << ans << endl;
}

• Subtask 1: 20 / 20
• Subtask 2: 50 / 50