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Submission #34391

# Submission time Handle Problem Language Result Execution time Memory
34391 2017-11-10T20:53:41 Z bnahmad15 Calvinball championship (CEOI15_teams) C++14
100 / 100
 476 ms 2172 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 10010,MOD = 1000007;
int n,ar[N],dp[2][N],mx[N],ans = 1;

int main() {
	
	scanf("%d",&n);
	mx[0]=0;
	for(int i =0 ;i<n;i++){
		scanf("%d",&ar[i]);
		if (i){
			mx[i]=max(mx[i-1],ar[i-1]);
		}
	}
	for (int i = 0 ;i <= n+2 ; i++)
		dp[n&1][i]=1;
	for (int i = n-1;i >= 0 ;i--){
		int m = mx[i];
		for (int j =1 ;j < ar[i];j++){
			m = max(m,j);
			ans += dp[(i+1) & 1][m];
			ans %= MOD;
		}
		for (int j = 1; j<=i+1;j++){
			dp[i&1][j]=(long long)dp[(i+1)&1][j]*j % MOD;
			dp[i&1][j] += dp[(i+1)&1][j+1];
			dp[i&1][j]%= MOD;
		}
	}
	cout<<ans;
	return 0;
}

Compilation message

teams.cpp: In function 'int main()':
teams.cpp:9:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^
teams.cpp:12:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&ar[i]);
                     ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2172 KB Output is correct
2 Correct 0 ms 2172 KB Output is correct
3 Correct 0 ms 2172 KB Output is correct
4 Correct 0 ms 2172 KB Output is correct
5 Correct 0 ms 2172 KB Output is correct
6 Correct 0 ms 2172 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2172 KB Output is correct
2 Correct 0 ms 2172 KB Output is correct
3 Correct 0 ms 2172 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2172 KB Output is correct
2 Correct 0 ms 2172 KB Output is correct
3 Correct 0 ms 2172 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2172 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2172 KB Output is correct
2 Correct 0 ms 2172 KB Output is correct
3 Correct 0 ms 2172 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2172 KB Output is correct
2 Correct 0 ms 2172 KB Output is correct
3 Correct 0 ms 2172 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2172 KB Output is correct
2 Correct 0 ms 2172 KB Output is correct
3 Correct 3 ms 2172 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 473 ms 2172 KB Output is correct

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 53 ms 2172 KB Output is correct
2 Correct 53 ms 2172 KB Output is correct
3 Correct 116 ms 2172 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 213 ms 2172 KB Output is correct
2 Correct 213 ms 2172 KB Output is correct
3 Correct 476 ms 2172 KB Output is correct