제출 #875838

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
875838		Mr_Ph	NoM (RMI21_nom)	C++17	0 / 100	0 ms	348 KiB

Main

#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
typedef long long ll;
typedef long long int lli;
typedef unsigned long long ull;
using namespace std;
using namespace __gnu_pbds;
template<class x>
using ordered_set = tree<x, null_type,less<x>, rb_tree_tag,tree_order_statistics_node_update>;
ll mod=(ll)1e9+7;
ll mod1=998244353;
///the defines :)
#define endl '\n'
#define vi vector<int>
#define vll vector<ll>
#define ent(arr) for(int i=0;i<arr.size();i++)cin>>arr[i];
#define all(arr) arr.begin(),arr.end()
#define allr(arr) arr.rbegin(),arr.rend()
#define sz size()
#define int long long
void preprocess() {}
void solve()
{
    int n,m;
    cin>>n>>m;
    vi arr;
    for(int i=1;i<=n;i++){
        arr.push_back(i);
        arr.push_back(i);
    }
    vector<pair<int,int>>xd(6);
    int ans=0;
    do
    {
        for(int i=0;i<2*n;i++)
        {
            if(xd[arr[i]].first)
                xd[arr[i]].second=i+1;
            else xd[arr[i]].first=i+1;
        }
        bool valid=true;
        for(int i=1;i<=n;i++)
            if((xd[i].second-xd[i].first)%m==0)valid=false;
        ans+=valid;
    }while(next_permutation(all(arr)));
    cout<<ans<<endl;
}
signed main()
{
    // freopen("meta_game_input.txt","r",stdin);
    // freopen("otput.txt","w",stdout);
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    preprocess();
    //bla();
    int t=1;
    //cin>>t;
    while(t--)
        solve();
}

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