Submission #1217012

#TimeUsernameProblemLanguageResultExecution timeMemory
1217012MalixSkyscraper (JOI16_skyscraper)C++20
0 / 100
189 ms181848 KiB
#include <bits/stdc++.h> using namespace std; typedef long long ll; typedef vector<int> vi; typedef vector<vi> vii; typedef pair<int,int> pi; typedef vector<pi> pii; typedef tuple<int,int,int> ti; typedef vector<ll> li; typedef vector<li> lii; #define REP(i,a,b) for(int i=a;i<b;i++) #define F first #define S second #define PB push_back #define LSOne(s) ((s)&(-s)) #define all(x) x.begin(),x.end() ll INF=1000000000000000010; int inf=1e9+10; ll M=1e9+7; int n,m,k,a[14]; ll dp[16384][14][101]; int main() { ios::sync_with_stdio(0); cin.tie(0); cin>>n>>m; m++; k=(1<<n); REP(i,0,n)cin>>a[i]; memset(dp,0,sizeof(dp)); ll ans=0; REP(i,0,n)dp[(1<<i)][i][0]=1; REP(i,0,k)REP(j,0,n){ if((i&(1<<j))==0)continue; REP(x,0,m){ if(dp[i][j][x]==0)continue; REP(y,0,n)if((i&(1<<y))==0)dp[i|(1<<y)][y][x+abs(a[y]-a[j])]+=dp[i][j][x]; } } REP(i,0,n)REP(j,0,m)ans+=dp[(1<<n)-1][i][j]; cout<<ans%M; }
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