oj.uz

Submission #386882

# Submission time Handle Problem Language Result Execution time Memory
386882 2021-04-07T15:19:29 Z two_sides Round words (IZhO13_rowords) C++17
52 / 100
 70 ms 64236 KB 
#include <bits/stdc++.h>

using namespace std;

#define fi first
#define se second

template <class X, class Y>
bool cmax(X &a, const Y &b) {
    return a < b ? a = b, 1 : 0;
}
const int N = 2005;

int dp[N][N], dir[N][N], m, n;
/// 0: up, 1: up-left, 2:left

void init_lcs(string s, string t) {
    memset(dp, 0, sizeof dp);
    memset(dir, 0, sizeof dp);
    m = s.size(), n = t.size(); t += t;
    dir[0][1] = 2;
    for (int i = 1; i <= m; i++)
        for (int j = 1; j <= 2 * n; j++) {
            dp[i][j] = dp[i - 1][j];
            if (s[i - 1] == t[j - 1] && cmax
            (dp[i][j], dp[i - 1][j - 1] + 1))
                dir[i][j] = 1;
            if (cmax(dp[i][j], dp[i][j - 1]))
                dir[i][j] = 2;
        }
}

int get_lcs(int i, int j) {
    int lcs = 0;
    while (i) {
        if (dir[i][j] == 2) j--;
        else if (dir[i][j] == 1) {
            i--; j--; lcs++;
        }
        else i--;
    }
    return lcs;
}

void remove_col(int j) {
    int i = 0;
    while (j < 2 * n) {
        if (dir[i][j + 1] == 2)
            dir[i][++j] = 0;
        else {
            if (i == m) break;
            if (dir[++i][j + 1] == 1)
                dir[i][++j] = 0;
        }
    }
}

int circular_lcs(string s, string t) {
    init_lcs(s, t); int lcs = 0;
    for (int j = 0; j < n; j++) {
        cmax(lcs, get_lcs(m, j + n));
        remove_col(j);
    }
    return lcs;
}

int main() {
    cin.tie(0)->sync_with_stdio(0);
    string s, t; cin >> s >> t;
    cout << circular_lcs(s, t) << '\n';
}

Subtask #1
52.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 18 ms 31852 KB Output isn't correct
2 Correct 18 ms 31852 KB Output is correct
3 Correct 18 ms 31852 KB Output is correct
4 Correct 18 ms 31852 KB Output is correct
5 Correct 18 ms 31852 KB Output is correct
6 Incorrect 20 ms 31852 KB Output isn't correct
7 Correct 43 ms 31852 KB Output is correct
8 Incorrect 51 ms 31852 KB Output isn't correct
9 Correct 50 ms 31852 KB Output is correct
10 Correct 43 ms 31852 KB Output is correct
11 Correct 47 ms 31980 KB Output is correct
12 Incorrect 35 ms 31852 KB Output isn't correct
13 Incorrect 68 ms 31852 KB Output isn't correct
14 Runtime error 70 ms 64236 KB Execution killed with signal 11
15 Runtime error 65 ms 64236 KB Execution killed with signal 11
16 Incorrect 55 ms 31852 KB Output isn't correct
17 Incorrect 37 ms 31852 KB Output isn't correct
18 Correct 52 ms 31852 KB Output is correct
19 Correct 44 ms 32000 KB Output is correct
20 Incorrect 56 ms 31872 KB Output isn't correct
21 Correct 23 ms 31852 KB Output is correct
22 Correct 28 ms 31852 KB Output is correct
23 Correct 33 ms 31852 KB Output is correct
24 Incorrect 34 ms 31852 KB Output isn't correct
25 Incorrect 39 ms 31852 KB Output isn't correct