Submission #1191492

#	Time	Username	Problem	Language	Result	Execution time	Memory
1191492		SmuggingSpun	Bajka (COCI20_bajka)	C++20	70 / 70	34 ms	328 KiB

bajka

#include<bits/stdc++.h>
#define taskname "B"
using namespace std;
const int lim = 305;
const int INF = 1e9;
template<class T>void minimize(T& a, T b){
	if(a > b){
		a = b;
	}
}
int n, m;
string s, t;
int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	if(fopen(taskname".inp", "r")){
		freopen(taskname".inp", "r", stdin);
	}
	cin >> n >> m >> s >> t;
	vector<int>dp(n, INF);
	for(int i = 0; i < n; i++){
		if(s[i] == t[0]){
			dp[i] = 0;
		}
	}
	for(int k = 1; k < m; k++){
		vector<int>ndp(n, INF);
		for(int i = 0; i < n; i++){
			for(int j = 0; j < n; j++){
				if(s[i] == s[j]){
					if(j > 0 && s[j - 1] == t[k]){
						minimize(ndp[j - 1], dp[i] + abs(i - j) + 1);
					}
					if(j + 1 < n && s[j + 1] == t[k]){
						minimize(ndp[j + 1], dp[i] + abs(i - j) + 1);
					}
				}
			}
		}
		swap(dp, ndp);
	}
	int ans = *min_element(dp.begin(), dp.end());
	cout << (ans == INF ? -1 : ans);
}

Compilation message (stderr)

bajka.cpp: In function 'int main()':
bajka.cpp:16:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |                 freopen(taskname".inp", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

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