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Submission #895821

# Submission time Handle Problem Language Result Execution time Memory
895821 2023-12-30T21:55:49 Z tvladm2009 Exam (eJOI20_exam) C++17
0 / 100
 5 ms 604 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    vector<int> a(n + 1), b(n + 1), r(n + 1);
    map<int, int> pos;
    for (int i = 1; i <= n; ++i) {
        cin >> a[i];
        pos[a[i]] = i;
    }
    for (int i = 1; i <= n; ++i) {
        cin >> b[i];
    }
    for (int i = n; i >= 1; --i) {
        r[i] = pos[b[i]];
    }
    vector<int> dp(n + 1, 0);
    for (int i = n; i >= 1; --i) {
        if (r[i] == 0) {
            dp[i] = dp[i + 1];
            continue;
        }
        int ans = 0;
        for (int j = i; j <= r[i]; ++j) ans += b[j] == b[i];
        dp[i] = max(dp[i + 1] + (a[i] == b[i]), dp[r[i] + 1] + ans);
    }
    cout << dp[1] << endl;
    return 0;
}

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Incorrect 0 ms 348 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 604 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Incorrect 0 ms 348 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #6
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Incorrect 0 ms 348 KB Output isn't correct
6 Halted 0 ms 0 KB -