Submission #1011858

#	Time	Username	Problem	Language	Result	Execution time	Memory
1011858		Dedibeat	Bajka (COCI20_bajka)	C++17	0 / 70	3 ms	1116 KiB

bajka

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

signed main(){
    int n, m;
    cin >> n >> m;
     string a, b;
     cin >> a >> b;
     int dp[n+5][m+5];
     map<char, vector<int> > mp;
     for(int i = 0; i<n; i++) mp[a[i]].push_back(i);
     for(int i = 0; i<=m; i++){
           for(int j = 0; j<n; j++) dp[i][j] = 1e10;
     }
     for(int j = 0; j<n; j++) {
               if(a[j] == b[0])  dp[0][j] = 0;
     }
     for(int i = 1; i<m; i++){

            for(int j = 0; j<n; j++){

                    if(a[j] == b[i]) {
                        //        cout << j << endl;
                           if(j > 0) {
                                  char x = a[j-1];
                                   auto v = mp[x];
                                  for(auto k : v){
                                        int cost = abs((j - 1) - k);
                                        dp[i][j] = min(dp[i-1][k] + cost, dp[i][j]);
                                  }

                           }

                           if(j < n-1) {

                                  char x = a[j + 1];
                                   auto v = mp[x];
                                  for(auto k : v){
                                        int cost = abs((j + 1) - k);
                                        dp[i][j] = min(dp[i-1][k] + cost, dp[i][j]);
                                  }

                           }

                    }
                 //   cout << dp[i][j] << " ";
            }


     }

            int mn = 1e10;
            for(auto k : mp[b[m-1]]){
                    mn = min(dp[m-1][k] , mn);
            }
         //   cout << mn << endl;
            if(mn >= 1e10) {
                   cout << "-1\n";
                   return 0;
            }
            cout << mn + m - 1 << endl;






}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 50