結果

問題 No.332 数列をプレゼントに
ユーザー keikei
提出日時 2018-10-18 14:48:56
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 85 ms / 2,000 ms
コード長 3,158 bytes
コンパイル時間 1,921 ms
コンパイル使用メモリ 182,276 KB
実行使用メモリ 29,528 KB
最終ジャッジ日時 2024-04-24 01:55:39
合計ジャッジ時間 6,257 ms
ジャッジサーバーID
(参考情報)
judge2 / judge3
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 2 ms
6,812 KB
testcase_01 AC 2 ms
6,940 KB
testcase_02 AC 2 ms
6,944 KB
testcase_03 AC 1 ms
6,944 KB
testcase_04 AC 2 ms
6,944 KB
testcase_05 AC 69 ms
11,340 KB
testcase_06 AC 66 ms
11,408 KB
testcase_07 AC 68 ms
11,392 KB
testcase_08 AC 70 ms
11,552 KB
testcase_09 AC 3 ms
6,944 KB
testcase_10 AC 69 ms
11,360 KB
testcase_11 AC 67 ms
11,596 KB
testcase_12 AC 67 ms
11,608 KB
testcase_13 AC 66 ms
11,344 KB
testcase_14 AC 68 ms
11,656 KB
testcase_15 AC 71 ms
14,176 KB
testcase_16 AC 67 ms
11,524 KB
testcase_17 AC 69 ms
11,564 KB
testcase_18 AC 84 ms
29,528 KB
testcase_19 AC 70 ms
11,412 KB
testcase_20 AC 70 ms
15,316 KB
testcase_21 AC 68 ms
13,028 KB
testcase_22 AC 71 ms
14,284 KB
testcase_23 AC 69 ms
11,424 KB
testcase_24 AC 70 ms
11,464 KB
testcase_25 AC 68 ms
11,564 KB
testcase_26 AC 69 ms
11,420 KB
testcase_27 AC 67 ms
11,420 KB
testcase_28 AC 68 ms
11,344 KB
testcase_29 AC 69 ms
11,400 KB
testcase_30 AC 69 ms
11,428 KB
testcase_31 AC 68 ms
11,284 KB
testcase_32 AC 68 ms
11,392 KB
testcase_33 AC 68 ms
11,340 KB
testcase_34 AC 71 ms
11,336 KB
testcase_35 AC 71 ms
11,280 KB
testcase_36 AC 2 ms
6,940 KB
testcase_37 AC 71 ms
11,452 KB
testcase_38 AC 71 ms
11,504 KB
testcase_39 AC 69 ms
11,460 KB
testcase_40 AC 68 ms
11,624 KB
testcase_41 AC 67 ms
11,540 KB
testcase_42 AC 70 ms
11,488 KB
testcase_43 AC 70 ms
11,604 KB
testcase_44 AC 69 ms
11,584 KB
testcase_45 AC 85 ms
24,556 KB
testcase_46 AC 70 ms
11,344 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int INF = 1e9;
const ll LINF = 1e18;
inline ll gcd(ll a, ll b) { return b ? gcd(b, a%b) : a; }
inline ll lcm(ll a, ll b) { return a / gcd(a, b)*b; }
template<class S,class T> ostream& operator << (ostream& out,const pair<S,T>& o){ out << "(" << o.first << "," << o.second << ")"; return out; }
template<class T> ostream& operator << (ostream& out,const vector<T> V){ for(int i = 0; i < V.size(); i++){ out << V[i]; if(i!=V.size()-1) out << " ";} return out; }
template<class T> ostream& operator << (ostream& out,const vector<vector<T> > Mat){ for(int i = 0; i < Mat.size(); i++) { if(i != 0) out << endl; out << Mat[i];} return out; }
template<class S,class T> ostream& operator << (ostream& out,const map<S,T> mp){ out << "{ "; for(auto it = mp.begin(); it != mp.end(); it++){ out << it->first << ":" << it->second; if(mp.size()-1 != distance(mp.begin(),it)) out << ", "; } out << " }"; return out; }

/*
 <url:https://yukicoder.me/problems/no/332>
 問題文============================================================
 =================================================================
 解説=============================================================
 ================================================================
 */


string solve(){
    string res;
    ll N,X; cin >> N >> X;
    vector<pll> A(N);
    for(int i = 0; i < N;i++){
        cin >> A[i].first; A[i].second = i;
    }
    sort(A.rbegin(),A.rend());
    int K = min(20,(int)A.size());
    vector<pll> C(A.begin(),A.begin()+K),D(A.begin()+K,A.end());
    
    ll Csz = C.size();
    vector<ll> Cdp(1<<Csz);
    for(int i = 0; i < (1<<Csz); i++){
        for(int j = 0; j < Csz;j++){
            if((i>>j)&1){
                Cdp[i] += C[j].first;
            }
        }
    }
    ll Dsz = D.size();
    ll Dsum = accumulate(D.begin(),D.end(),0LL,[](ll sum,const pll& p){
        return sum + p.first;
    });
    vector<vector<int>> Ddp(Dsz+1,vector<int>(Dsum+1));
    Ddp[0][0] = true;
    for(int i = 0; i < Dsz;i++){
        for(int j = 0; j <= Dsum;j++){
            if(Ddp[i][j]){
                Ddp[i+1][j] |= Ddp[i][j];
                Ddp[i+1][D[i].first+j] |= Ddp[i][j];
            }
        }
    }
    
    vector<ll> ans;
    for(int b = 0; b < (1<<Csz);b++){
        if(Cdp[b] > X) continue;
        if(X-Cdp[b] > Dsum) continue;
        if(Ddp[Dsz][X-Cdp[b]]){
            for(int bb = 0; bb < Csz; bb++){
                if((b>>bb)&1) ans.push_back(C[bb].second);
            }
            ll now = Dsz;
            ll nowv = X - Cdp[b];
            while(now--){
                if(Ddp[now][nowv]) continue;
                if(Ddp[now][nowv-D[now].first]){
                    nowv -= D[now].first;
                    ans.push_back(D[now].second);
                }
            }
            break;
        }
    }
    if(ans.empty()) return "No";

    res = string(N,'x');
    for(auto v:ans) res[v] = 'o';
    return res;
}
int main(void) {
    cin.tie(0); ios_base::sync_with_stdio(false);
    cout << solve() << endl;
    return 0;
}
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