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Submission #126057

# Submission time Handle Problem Language Result Execution time Memory
126057 2019-07-06T21:53:02 Z Mahmoud_Adel Calvinball championship (CEOI15_teams) C++14
20 / 100
 27 ms 16248 KB 
#include <bits/stdc++.h>
using namespace std;
#define f first
#define s second
typedef long long ll;
const int N = 1e3+5, mod = 1e9+7;
ll n, dp[N][N][2], a[N];
ll sol(int i, ll j, int bit)
{
	if(i == n) return 1;
	ll &ret = dp[i][j][bit];
	if(ret != -1) return ret;
	if(bit) ret = j*sol(i+1, j, 1)%mod + sol(i+1, j+1, 1)%mod;
	else ret = (a[i]-1)*sol(i+1, max(j, a[i]-1), 1)%mod + 
	sol(i+1, max(j, a[i]), 0)%mod;
	return ret%mod;
}
int main()
{
	memset(dp, -1, sizeof dp);
	cin >> n;
	for(int i=0; i<n; i++) cin >> a[i];
	cout << sol(0, 0, 0) << endl;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 16120 KB Output is correct
2 Correct 15 ms 16120 KB Output is correct
3 Correct 15 ms 16120 KB Output is correct
4 Correct 15 ms 16120 KB Output is correct
5 Correct 15 ms 16120 KB Output is correct
6 Correct 15 ms 16120 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 16120 KB Output is correct
2 Correct 15 ms 16220 KB Output is correct
3 Correct 15 ms 16120 KB Output is correct

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 14 ms 16120 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 15 ms 16120 KB Output isn't correct

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 15 ms 16176 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 18 ms 16120 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 27 ms 16248 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 19 ms 16116 KB Output isn't correct

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 17 ms 16092 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 18 ms 16120 KB Output isn't correct
2 Halted 0 ms 0 KB -