제출 #62526

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
62526		MatheusLealV	Calvinball championship (CEOI15_teams)	C++17	70 / 100	50 ms	4744 KiB

teams

#include <bits/stdc++.h>
#define N 1001
using namespace std;
typedef long long ll;

ll n, k, v[N], tot, used[N], mod = 1000007;

int dp[N][N];

ll solve(ll i, ll k)
{
	if(i > n) return 1;

	if(dp[i][k] != -1) return dp[i][k];

	ll A = ((solve(i + 1, k) * k) % mod + solve(i + 1, k + 1) % mod)%mod;

	return dp[i][k] = A;
}

inline ll pos()
{
	set<ll> add;

	ll q;

	memset(dp, -1, sizeof dp);

	for(ll i = 1; i <= n; i++)
	{
		tot = (tot + solve(i + 1, add.size())*(v[i] - 1) )%mod;

		add.insert(v[i]);
	}

	return (tot + 1)%mod;
}

int main()
{
	ios::sync_with_stdio(false); cin.tie(0);

	cin>>n;

	ll s = 0;

	for(ll i = 1; i <= n; i++)
	{
		cin>>v[i];

		if(!used[v[i]]) k++;

		used[v[i]] = 1;

		s = (s + solve(n, i))%mod;
	}

	cout<<pos()<<"\n";
}

컴파일 시 표준 에러 (stderr) 메시지

teams.cpp: In function 'll pos()':
teams.cpp:25:5: warning: unused variable 'q' [-Wunused-variable]
  ll q;
     ^

• 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: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10