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Submission #670527

# Submission time Handle Problem Language Result Execution time Memory
670527 2022-12-09T13:33:50 Z someone Exam (eJOI20_exam) C++14
0 / 100
 301 ms 315076 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;

const int N = 5e3 + 42, INF = 1e18 + 42;

int n, a[N], b[N], nb[N][N], cost[N][N], dp[N];

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    
    cin >> n;
    for(int i = 0; i < n; i++)
        cin >> a[i];
    for(int i = 0; i < n; i++)
        cin >> b[i];
    
    for(int i = 0; i < n; i++)
        for(int j = 0; j < n; j++) {
            nb[i][j+1] = nb[i][j];
            if(a[i] == b[j])
                nb[i][j+1]++;
        }
        
    for(int i = 0; i < n; i++) {
        int imax = i;
        for(int j = i+1; j <= n; j++) {
            if(a[imax] < a[j-1])
                imax = j-1;
            cost[i][j] = nb[imax][j] - nb[imax][i];
        }
    }
    
    for(int i = 1; i <= n; i++)
        for(int j = 0; j < i; j++)
            dp[i] = max(dp[i], dp[j] + cost[j][i]);
    cout << dp[n];
}

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 324 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 328 KB Output is correct
5 Incorrect 1 ms 336 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 20260 KB Output is correct
2 Runtime error 7 ms 676 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 301 ms 315076 KB Output is correct
2 Runtime error 9 ms 816 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #5
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 324 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 328 KB Output is correct
5 Incorrect 1 ms 336 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 324 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 328 KB Output is correct
5 Incorrect 1 ms 336 KB Output isn't correct
6 Halted 0 ms 0 KB -