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Submission #527222

# Submission time Handle Problem Language Result Execution time Memory
527222 2022-02-17T03:54:39 Z joelau Calvinball championship (CEOI15_teams) C++14
70 / 100
 44 ms 65540 KB 
#include <bits/stdc++.h>
using namespace std;

long long N, A[10005], p = 1000007;
vector<long long> dp[10005];

int main() {
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    cin >> N;
    for (long long i = 1; i <= N; ++i) cin >> A[i];
    for (long long i = 1; i <= N+1; ++i) dp[i].assign(i+1,1);
    for (long long i = N; i > 0; --i) for (long long j = 1; j <= i; ++j) dp[i][j] = (dp[i+1][j] * j + dp[i+1][j+1]) % p;
    long long ans = 1, most = 0;
    for (long long i = 1; i <= N; ++i) {
        ans = (ans + dp[i+1][most] * min(most,A[i]-1)) % p;
        for (long long j = most+1; j < A[i]; ++j) ans = (ans + dp[i+1][j]) % p;
        most = max(most,A[i]);
    }
    cout << ans;

    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 0 ms 460 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 0 ms 460 KB Output is correct
6 Correct 0 ms 460 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 460 KB Output is correct
2 Correct 0 ms 460 KB Output is correct
3 Correct 0 ms 460 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 460 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 588 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 588 KB Output is correct
2 Correct 1 ms 588 KB Output is correct
3 Correct 1 ms 588 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1484 KB Output is correct
2 Correct 2 ms 1444 KB Output is correct
3 Correct 2 ms 1484 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4428 KB Output is correct
2 Correct 9 ms 4388 KB Output is correct
3 Correct 6 ms 4428 KB Output is correct

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 44 ms 65540 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 30 ms 65540 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 33 ms 65540 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -