Submission #1215908

#	Time	Username	Problem	Language	Result	Execution time	Memory
1215908		omarrrr	Skyscraper (JOI16_skyscraper)	C++20	0 / 100	170 ms	212056 KiB

skyscraper

#include<bits/stdc++.h>
#define ll long long
#define F first
#define S second
#define pb push_back

using namespace std;
const ll N=1e6,mod=1e9 +7;

ll a,b,c,d,n,l;
ll t[N];
        ll dp[(1<<14)][15][110];




int main(){
    ios_base::sync_with_stdio(0),cin.tie(0);

    ll T=1;
   // cin>>T;
    while(T--){
        cin>>n>>l;

        for(ll i=0;i<n;i++){
            cin>>t[i];
        }

        memset(dp,0,sizeof(dp));

        for(ll i=0;i<n;i++){
            dp[(1<<i)][i][0]=1;
        }

        for(ll i=0;i<(1<<n);i++){
            for(ll j=0;j<n;j++){
                if(i&(1<<j)){

                    for(ll k=0;k<n;k++){

                        if(!(i & (1<<k))){
                            for(ll m=0;m<=l;m++){
                                if(m+abs(t[j]-t[k])<=l)
                                    dp[i+(1<<k)][k][m+abs(t[j]-t[k])]+=dp[i][j][m];
                            }

                        }

                    }

                }
            }
        }

        ll res=0;
        for(ll i=0;i<n;i++){
            for(ll j=0;j<=l;j++){
                res+=dp[(1<<n)-1][i][j];
            }
        }
        cout<<res<<"\n";



    }




    return 0;
}


/*
 4 10
3 6 2 9

 */

• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3: 0 / 80