#415263 (C++14) No.472 平均順位

• 問題: No.472 平均順位
• ユーザー: tomoish
• 提出日時: 2020-01-09 01:12:01
• 言語: C++14 (gcc 13.3.0 + boost 1.87.0)
• 結果: AC
• 実行時間: 216 ms / 2,000 ms
• コード長: 2,321 bytes
• コンパイル時間: 1,676 ms
• コンパイル使用メモリ: 167,688 KB
• 実行使用メモリ: 6,824 KB
• 最終ジャッジ日時: 2024-11-23 03:33:21
• 合計ジャッジ時間: 2,851 ms
• ジャッジサーバーID （参考情報）: judge2 / judge3

ファイルパターン	結果
sample	AC * 4
other	AC * 16

ソースコード

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// #pragma GCC optimize("Ofast")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include<bits/stdc++.h>
#define ll long long
#define ull unsigned long long
#define pii pair<int,int>
#define pp pair<pair<ll, ll>,pair<ll, ll>>
#define pll pair<ll,ll>
#define pdd pair<double,double>
#define vii vector<int>
#define vll vector<ll>
#define mat vector<vector<ll>>
#define lb lower_bound
#define ub upper_bound
#define pb push_back
#define fi first
#define sc second
#define rep(i,n) for(ll i=0;i<n;i++)
#define rep2(i,a,b) for(ll i=a;i<b;i++)
#define repr(i,n) for(ll i=n-1;i>=0;i--)
#define all(x) x.begin(),x.end()
#define sz(x) (ll) (x).size()
#define pq priority_queue<ll>
#define pqg priority_queue<ll,vector<ll>,greater<ll>>
#define LB(v,x) (lower_bound(v.begin(),v.end(),x)-v.begin())
#define UB(v,x) (upper_bound(v.begin(),v.end(),x)-v.begin())
#define ERASE(v) sort(v.begin(),v.end());v.erase(unique(v.begin(),v.end()),v.end())
#define int ll
using namespace std;
const ll INF = (1 << 30 ) - 1;
const ll LLINF = (1LL << 60LL);
const ll MOD = 1000000007;
const ll mod = 998244353;
const ll MAX = 1100000;
const double pi = acos(-1);
const double eps = 1e-10;
ll dx[4] ={1,0,-1,0} , dy[4] ={0,1,0,-1};
template<class T> 
inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> 
inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
struct Timer{
    chrono::system_clock::time_point start, end;
    Timer(){ start = chrono::system_clock::now(); }
    ~Timer(){
        end = chrono::system_clock::now();
        auto msec = chrono::duration_cast<chrono::milliseconds>(end - start).count();
        cerr<<"time : "<<msec<<" ms"<<endl;
    }
};
ll dp[15010];
signed main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(15);
    // Timer TM;
    ll n,p;
    cin>>n>>p;
    ll a[5010][4];
    rep(i,n){
        cin>>a[i][0]>>a[i][1]>>a[i][2];
        a[i][3]=1;
    }
    rep(j,15010) dp[j]=LLINF;
    dp[0]=0;
    rep(i,n){
        repr(j,p+1){
            if(dp[j]==LLINF) continue;
            repr(k,4){
                if(k==0) dp[j]=dp[j]+a[i][0];
                chmin(dp[j+k],dp[j]+a[i][k]);
            }
        }
    }
    cout<<(double)dp[p]/(double)n<<endl;
    return 0;
}
 
 
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