Submission #992531

#	Time	Username	Problem	Language	Result	Execution time	Memory
992531		Abito	NoM (RMI21_nom)	C++17	9 / 100	50 ms	452 KiB

Main

#include <bits/stdc++.h>
#define F first
#define S second
#define pb push_back
#define ppb pop_back
#define ep insert
#define endl '\n'
#define elif else if
#define pow pwr
#define sqrt sqrtt
//#define int long long
#define y1 YONE
typedef unsigned long long ull;
using namespace std;
const int N=20;
int n,m,b[N];
pair<int,int> a[N];
int32_t main(){
    ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
    cin>>n>>m;
    for (int i=1;i<=n;i++) a[i]={i,1};
    for (int i=1+n;i<=n*2;i++) a[i]={i-n,2};
    sort(a+1,a+1+2*n);
    int ans=0;
    do{
        //for (int i=1;i<=2*n;i++) cout<<a[i].F<<' ';
        //cout<<endl;
        memset(b,0,sizeof(b));
        bool ok=true;
        for (int i=1;i<=2*n;i++){
            if (b[a[i].F]) ok&=((i-b[a[i].F])%m!=0);
            else b[a[i].F]=i;
        }ans+=ok;
        /*if (ok){
            for (int i=1;i<=2*n;i++) cout<<a[i].F<<' ';
            cout<<endl;
        }*/
    }while (next_permutation(a+1,a+1+2*n));
    cout<<ans<<endl;
    return 0;
}

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