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Submission #938195

# Submission time Handle Problem Language Result Execution time Memory
938195 2024-03-05T02:11:41 Z weakweakweak Bajka (COCI20_bajka) C++17
70 / 70
 2 ms 1476 KB 
#include <bits/stdc++.h>
using namespace std;

int n, m, dp[510][510] = {0};
string s, t;

int main () {
    memset(dp, 63, sizeof(dp));
    ios_base::sync_with_stdio(false); cin.tie(0);
    cin >> n >> m >> s >> t;
    t = "%" + t;

    for (int i = 0; i < n; i++) if (s[i] == t[1]) dp[1][i] = 0;
    for (int i = 2; i <= m; i++) {
        for (int j = 0; j < n; j++) {
            if (s[j] != t[i]) continue;
            if (j > 0) dp[i][j] = min(dp[i][j], dp[i - 1][j - 1] + 1);
            if (j + 1 < n) dp[i][j] = min(dp[i][j], dp[i - 1][j + 1] + 1);
        }
        int mn = INT_MAX / 2;
        for (int j = 0; j < n; j++) {
            if (s[j] == t[i]) {
                dp[i][j] = min(dp[i][j], mn + j);
                mn = min(mn, dp[i][j] - j);
            }
        }
        mn = INT_MAX / 2;
        for (int j = n - 1; j >= 0; j--) {
            if (s[j] == t[i]) {
                dp[i][j] = min(dp[i][j], mn - j);
                mn = min(mn, dp[i][j] + j);
            }
        }
    }

    int ans = INT_MAX;
    for (int i = 0; i < n; i++) ans = min(ans, dp[m][i]);
    if (ans > 100000) ans = -1;
    cout << ans << '\n';
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1368 KB Output is correct
2 Correct 1 ms 1372 KB Output is correct
3 Correct 1 ms 1472 KB Output is correct
4 Correct 1 ms 1372 KB Output is correct
5 Correct 1 ms 1372 KB Output is correct
6 Correct 1 ms 1476 KB Output is correct

Subtask #2
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1372 KB Output is correct
2 Correct 1 ms 1372 KB Output is correct
3 Correct 1 ms 1372 KB Output is correct
4 Correct 1 ms 1372 KB Output is correct
5 Correct 1 ms 1372 KB Output is correct
6 Correct 1 ms 1372 KB Output is correct
7 Correct 1 ms 1372 KB Output is correct
8 Correct 1 ms 1372 KB Output is correct
9 Correct 1 ms 1368 KB Output is correct
10 Correct 1 ms 1368 KB Output is correct
11 Correct 2 ms 1368 KB Output is correct