提出詳細

提出id	提出時刻	ユーザー名	問題	言語	判定状況	判定	実行時間
114866	2023-10-24 09:18:51	TKTYI	H	cpp	19/19	AC	647

#include<bits/stdc++.h>
using namespace std;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<vvi> vvvi;
typedef vector<vvvi> vvvvi;
typedef vector<bool> vb;
typedef vector<vb> vvb;
typedef vector<vvb> vvvb;
typedef vector<vvvb> vvvvb;
#define REP(i,n) for(int i=0;i<n;i++)
template<class T>bool chmax(T&a,T b){if(a<b){a=b;return 1;}return 0;}
int main(){
  int N;cin>>N;
  vector<string>S(N);
  REP(i,N)cin>>S[i];
  int ans=0;
  vvb DP(1<<N,vb(N));
  REP(i,N)DP[1<<i][i]=1;
  vvi b(1<<N);vi e(1<<N);
  REP(i,1<<N)REP(j,N)if((i>>j)%2){
    b[i].emplace_back(j);
    e[i]+=S[j].size();
  }
  vvb E(N,vb(N));
  REP(i,N)REP(j,N)if(S[i].back()==S[j][0])E[i][j]=1;
  REP(i,1<<N)for(auto j:b[i])for(auto k:b[i])if(DP[i-(1<<j)][k]&&E[k][j])DP[i][j]=1;
  REP(i,1<<N)for(auto j:b[i])if(DP[i][j])chmax(ans,e[i]);
  cout<<ans<<endl;
  return 0;
}

sample1.txt AC 2
sample2.txt AC 2
sample3.txt AC 3
case1.txt AC 364
case2.txt AC 362
case3.txt AC 362
case4.txt AC 359
case5.txt AC 358
case6.txt AC 618
case7.txt AC 619
case8.txt AC 3
case9.txt AC 20
case10.txt AC 10
case11.txt AC 3
case12.txt AC 4
case13.txt AC 15
case14.txt AC 3
case15.txt AC 8
case16.txt AC 647
647 AC647 AC