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Submission #573330

# Submission time Handle Problem Language Result Execution time Memory
573330 2022-06-06T12:22:44 Z vladislav11 Calvinball championship (CEOI15_teams) C++14
0 / 100
 37 ms 65536 KB 
#include <bits/stdc++.h>

using namespace std;

using ll = long long;
const ll MOD = 1e6 + 7;

int n;
vector<int> a;

const int N = 1e4 + 100;
ll dp[N][N];

int main ()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    cin >> n;

    a.resize( n );

    for ( auto& el : a )
        cin >> el;

    for ( int i=0; i<N; i++ )
    for ( int j=0; j<N; j++ )
        dp[i][j] = 0;

    for ( int i=1; i<=n; i++ )
        dp[0][i] = 1;

    for ( int i=1; i<=n; i++ )
    for ( int j=1; j<=n; j++ )
        dp[i][j] = ( j*dp[i-1][j] + ( j<n ? dp[i-1][j+1] : 0 ) ) % MOD;

    ll ans = 1;

    int maxi = 0;

    for ( int i=0; i<n; i++ )
    {
        for ( int j=1; j < a[i]; j++ )
            ans = ( ans + dp[n-1-i][ max( maxi, j ) ] ) % MOD;

        maxi = max( maxi, a[i] );
    }

    cout << ans;

    return 0;
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 33 ms 65536 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 34 ms 65536 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 34 ms 65536 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 31 ms 65536 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 28 ms 65536 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 29 ms 65536 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 33 ms 65536 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 32 ms 65536 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 37 ms 65536 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 30 ms 65536 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -