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Submission #781101

# Submission time Handle Problem Language Result Execution time Memory
781101 2023-07-12T17:54:25 Z Charizard2021 Calvinball championship (CEOI15_teams) C++17
100 / 100
 75 ms 632 KB 
#include <bits/stdc++.h>
using namespace std;
const long long MOD = 1000007;
int main(){
    long long n;
    cin >> n;
    long long dp[2][1 + n];
    long long cur = n % 2;
    long long a[1 + n];
    long long prefMax[1 + n];
    prefMax[0] = 0;
    for(long long i = 1; i <= n; i++){
        cin >> a[i];
        prefMax[i] = max(prefMax[i - 1], a[i]);
        dp[cur][i] = 1;
    }
    long long ans = 1;
    for(long long i = n - 1; i > 0; i--, cur ^= 1){
        ans = (ans + dp[cur][prefMax[i]] * (a[i + 1] - 1)) % MOD;
        for(long long j = 1; j <= i; j++){
            dp[!cur][j] = (dp[cur][j] * j + dp[cur][j + 1]) % MOD;
        }
    }
    cout << ans << "\n";
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 312 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 2 ms 212 KB Output is correct
3 Correct 1 ms 324 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 576 KB Output is correct

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 340 KB Output is correct
2 Correct 22 ms 456 KB Output is correct
3 Correct 19 ms 468 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 75 ms 596 KB Output is correct
2 Correct 72 ms 620 KB Output is correct
3 Correct 73 ms 632 KB Output is correct