Submission #244433

#	Time	Username	Problem	Language	Result	Execution time	Memory
244433		oolimry	Calvinball championship (CEOI15_teams)	C++14	100 / 100	994 ms	760 KiB

teams

//HAPPY BIRTHDAY!!!
#include <bits/stdc++.h>
#define int long long
using namespace std;
typedef pair<int,int> ii;

int mod = 1000007;
int ans = 0;

int dp[10005];

signed main(){
	ios_base::sync_with_stdio(false); cin.tie(0);
	
	int n; cin >> n;
	int arr[n]; for(int i = 0;i < n;i++) cin >> arr[i];
	int pre[n];
	pre[0] = arr[0];
	for(int i = 1;i < n;i++){
		pre[i] = max(pre[i-1], arr[i]);
	}
	
	for(int i = 1;i <= n;i++) dp[i] = 1;
	
	for(int p = n-1;p >= 0;p--){
		for(int v = 1;v < arr[p];v++){
			int maxValue = v;
			if(p != 0) maxValue = max(maxValue, pre[p-1]);
			
			ans += dp[maxValue];
			
			//cout << p << " " << v << " " << dp[maxValue] << "\n";
			ans %= mod;
		}
		
		for(int i = 1;i <= n;i++){
			dp[i] = dp[i] * i + dp[i+1];
			dp[i] %= mod;
		}
		
		//for(int i = 1;i <= n;i++) cout << dp[i] << " ";
		//cout << "\n";
	}
	
	ans++; ans %= mod;
	cout << ans;
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10