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Submission #971702

# Submission time Handle Problem Language Result Execution time Memory
971702 2024-04-29T07:59:03 Z LucaIlie Cigle (COI21_cigle) C++17
0 / 100
 2 ms 2908 KB 
#include <bits/stdc++.h>

using namespace std;

const int MAX_N = 5000;
int d[MAX_N + 1], sd[MAX_N + 1], dp[MAX_N + 1][MAX_N + 1];

int main() {
    int n;

    cin >> n;
    for ( int i = 1; i <= n; i++ ) {
        cin >> d[i];
        sd[i] = sd[i - 1] + d[i];
    }

    for ( int i = 1; i <= n; i++ ) {
        int k = i, lk = i + 1, c = 0;
        for ( int j = i + 1; j <= n; j++ ) {
            while ( k > 0 && sd[i] - sd[k] < sd[j] - sd[i] )
                k--;

            //printf( "%d %d %d %d\n", k, i, j, sd[j] - sd[i] );
            dp[i][j] = max( dp[i][j], dp[k][i] + c - (k == lk) );
            if ( sd[i] - sd[k] == sd[j] - sd[i] ) {
                c++;
                lk = k;
            }

        }
        for ( int j = i; j <= n; j++ )
            dp[i][j] = max( dp[i][j], max( dp[i - 1][j], dp[i][j - 1] ) );
    }

    /*for ( int i = 1; i <= n; i++ ) {
        for ( int j = 1; j <= n; j++ )
            printf( "%d ", dp[i][j] );
        printf( "\n" );
    }*/

    int ans = 0;
    for ( int i = 0; i <= n; i++ )
        ans = max( ans, dp[i][n] );

    cout << ans;

    return 0;
}

Subtask #1
0 / 9.0

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

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 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 2 ms 2908 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

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

Subtask #5
0 / 52.0

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