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Submission #546096

# Submission time Handle Problem Language Result Execution time Memory
546096 2022-04-06T10:54:20 Z CPSC Calvinball championship (CEOI15_teams) C++14
20 / 100
 105 ms 65536 KB 
# include <bits/stdc++.h>
#define f first
#define s second
#define pb push_back
#define pii pair <int ,int>
using namespace std;
const int N = 3005, mod = 1e9 + 7;
int dp[N][N],a[N],n,mx,ans;
main() {
    std::ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
    cin>>n;
    for (int i = 1; i <= n; i++) {
        cin>>a[i];
    }
    for (int i = 0; i <= n; i++) {
        dp[0][i] = 1;
    }
    for (int i = 1; i <= n; i++) {
        for (int mx = 1; mx <= n; mx++) {
            dp[i][mx] = dp[i - 1][mx]*mx+dp[i - 1][mx + 1];
            dp[i][mx] %= mod;
        }
    }
    mx = 0;
    for (int i = 1; i <= n; i++) {
        ans += ((a[i] - 1)*dp[n - i][mx])%mod; ans %= mod;
        mx = max(mx,a[i]);
    }cout<<ans+1<<"\n";
}

Compilation message

teams.cpp:9:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    9 | main() {
      | ^~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct

Subtask #3
0 / 10.0

# 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 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 724 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 724 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 3284 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 8148 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 105 ms 65536 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 79 ms 65536 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 103 ms 65536 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -