Submission #388496

#	Time	Username	Problem	Language	Result	Execution time	Memory
388496		shawon_majid	A Huge Tower (CEOI10_tower)	C++14	5 / 100	1093 ms	5196 KiB

tower

//Bismillahir Rahman-ir Rahim
#include <bits/stdc++.h>
using namespace std;
#define debug(x) cout << '>' << #x << " : " << x << endl;
#define all(c) c.begin(), c.end()
#define F first
#define S second
typedef unsigned long long ull;
typedef long long ll;


int main() {

    
    int n, limit;
    cin >> n >> limit;
    vector<pair <int, int> > ara(n);
    for(int i = 0; i < n; i++){
        cin >> ara[i].F;
        ara[i].S = i;
    }
    int ans = 0;
    do{
        bool f = 1;
        // for(int i = 0; i < n; i++) cout << ara[i].F  << " ";
        // cout << endl; 
        for(int i = 0; i < n-1; i++){
            if(ara[i].F +limit < ara[i+1].F){
                f = 0;
            }
        }

        if(f) ans++;

    }while(next_permutation(all(ara)));

    cout << ans << endl;

    return 0;
}

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