Submission #472622

#	Time	Username	Problem	Language	Result	Execution time	Memory
472622		kungfulon	Bajka (COCI20_bajka)	C++17	70 / 70	58 ms	660 KiB

bajka

#include <iostream>
#include <vector>
using namespace std;

int main(int argc,const char** argv){
    int n,m,ans = 1e9;
    cin >> n >> m;
    string s,t;
    cin >> s >> t;
    vector<vector<int>> dp(m,vector<int>(n,1e9));
    for(int i = 0;i < m;i++){
    	vector<int> f; // save pos
    	for(int j = 0;j < n;j++) if(s[j] == t[i]) f.push_back(j);

    	for(int pos : f){
    		if(!i) dp[i][pos] = 0;
    		else{
    			if(pos && s[pos - 1] == t[i - 1]){
    				dp[i][pos] = min(dp[i][pos],dp[i - 1][pos - 1] + 1);
    			}
    			if(pos < n - 1 && s[pos + 1] == t[i - 1]){
    				dp[i][pos] = min(dp[i][pos],dp[i - 1][pos + 1] + 1);
    			}
    		}
    	}
    	for(int l = 0;l < f.size();l++){
    		for(int r = 0;r < f.size();r++){
    			dp[i][f[l]] = min(dp[i][f[l]], abs(f[l] - f[r]) + dp[i][f[r]]);
    		}
    		if(i == m - 1){
    			ans = min(ans,dp[i][f[l]]);
    		}
    	}
    }
    cout << (ans < 1e9 ? ans : -1);
}

Compilation message (stderr)

bajka.cpp: In function 'int main(int, const char**)':
bajka.cpp:26:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |      for(int l = 0;l < f.size();l++){
      |                    ~~^~~~~~~~~~
bajka.cpp:27:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |       for(int r = 0;r < f.size();r++){
      |                     ~~^~~~~~~~~~

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