Submission #597788

#	Time	Username	Problem	Language	Result	Execution time	Memory
597788		ThegeekKnight16	NoM (RMI21_nom)	C++14	0 / 100	1092 ms	2312 KiB

Main

#include <bits/stdc++.h>
using namespace std;
const int MAXN = 2e3 + 10;
vector<int> v;
int grupo[MAXN];
int resp = 0;
int modulo = 1e9 + 7;

int fat(int x)
{
    if (x == 0) return 1;
    if (x == 1) return 1;
    cerr << "E" << '\n';
    return ((x * fat(x-1)) % modulo);
}

void bt(int id, int N, int M)
{
    cerr << "Inicio de " << id << '\n';
    if (id == N+1)
    {
        int aux = 1;
        for (int i = 1; i <= M; i++) 
        {
            if (grupo[i] > ((2*N) / M) + ((2*N) % M >= i)) {cerr << "fim de " << id << '\n';return;}
            aux *= fat(grupo[i]);
            aux = aux % modulo;
            cerr << aux << '\n';
        }
        resp += aux;
        resp = resp % modulo;
        cerr << "resp: " << resp << '\n';
        cerr << "Fim de " << id << '\n';
        return;
    }
    
    for (int i = 1; i <= M; i++)
    {
        for (int j = 1; j <= M; j++)
        {
            if (i == j) continue;
            if (grupo[i] >= ((2*N) / M) + ((2*N) % M >= i)) continue;
            if (grupo[j] >= ((2*N) / M) + ((2*N) % M >= j)) continue;
            grupo[i]++; grupo[j]++;
            bt(id+1, N, M);
            grupo[i]--; grupo[j]--;
        }
    }
    cerr << "Fim de " << id << '\n';
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int N, M;
    cin >> N >> M;
    
    if ((2*N / M) + ((2*N) % M > 0) > N) 
    {
        cout << "0";
        return 0;
    }
    
    bt(1, N, M);
    cout << resp;
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 12
• Subtask 3: 0 / 13
• Subtask 4: 0 / 18
• Subtask 5: 0 / 48