Submission #1004626

#	Time	Username	Problem	Language	Result	Execution time	Memory
1004626		Valaki2	Calvinball championship (CEOI15_teams)	C++14	20 / 100	82 ms	504 KiB

teams

#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pb push_back
#define mp make_pair
#define pii pair<int, int>
#define fi first
#define se second

const int mod = 1e6 + 7;

void nxt(vector<int> &v) {
    int n = (int) v.size();
    vector<int> prefmax(n);
    prefmax[0] = 1;
    for(int i = 1; i < n; i++) {
        prefmax[i] = max(prefmax[i - 1], v[i]);
    }
    if(prefmax[n - 1] == n) {
        // 1 2 3 ... n
        return;
    }
    for(int i = n - 1; i >= 0; i--) {
        if(prefmax[i - 1] >= v[i]) {
            v[i]++;
            return;
        }
        v[i] = 1;
    }
}

void solve() {
    int n;
    cin >> n;
    vector<int> dp(1 + n, 0);
    dp[1] = 1;
    for(int i = 2; i <= n; i++) {
        for(int j = i; j >= 1; j--) {
            dp[j] = dp[j] * j + dp[j - 1];
            dp[j] %= mod;
        }
    }
    int res = 0;
    for(int i = 1; i <= n; i++) {
        res += dp[i];
        res %= mod;
    }
    cout << res << "\n";
    /*for(int n = 1; n <= 14; n++) {
        vector<int> a(n, 1);
        vector<int> b(n);
        for(int i = 0; i < n; i++) {
            b[i] = i + 1;
        }
        int cnt = 1;
        while(a != b) {
            nxt(a);
            cnt++;
        }
        cout << n << ": " << cnt << "\n";
    }*/
    /*int n;
    cin >> n;
    vector<int> v(n, 1);
    vector<int> goal(n);
    for(int i = 0; i < n; i++) {
        cin >> goal[i];
    }
    int ans = 0;
    ans++;
    while(v != goal) {
        nxt(v);
        ans++;
    }
    ans %= mod;
    cout << ans << "\n";*/
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    solve();
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 10 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 10 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10