結果
| 問題 | No.332 数列をプレゼントに |
| コンテスト | |
| ユーザー |
kei
|
| 提出日時 | 2018-10-16 15:53:15 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.89.0) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 2,525 bytes |
| 記録 | |
| コンパイル時間 | 1,877 ms |
| コンパイル使用メモリ | 186,056 KB |
| 実行使用メモリ | 181,412 KB |
| 最終ジャッジ日時 | 2024-10-12 18:40:42 |
| 合計ジャッジ時間 | 5,809 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 5 |
| other | TLE * 1 -- * 41 |
ソースコード
#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=============================================================
================================================================
*/
vector<ll> ok_idx;
bool rec(ll n,ll X,map<pll,bool>& mp,vector<ll>& A){
if(X==0){
return true;
}
for(ll next = n-1; next >= -1; next--){
if(mp.count(pll(next,X-A[n]))){
if(rec(next,X-A[n],mp,A)){
ok_idx.push_back(n);
return true;
}
}
}
return false;
}
string solve(){
string res;
ll N,X; cin >> N >> X;
vector<ll> A(N); for(auto& in:A) cin >> in;
map<pll,bool> mp[2]; mp[0][pll(-1,0)] = true;
int cur = 0,next = 1;
for(int i = 0; i < N;i++){
for(auto p:mp[cur]){
mp[next][p.first] = true;
mp[next][pll(i,p.first.second+A[i])] = true;
}
mp[cur].clear();
swap(cur,next);
}
ll idx = -1;
for(int i = 0; i < N;i++){
if(mp[cur].count(pll(i,X))){
idx = i;
}
}
if(idx == -1) return "No";
rec(idx,X,mp[cur],A);
sort(ok_idx.begin(),ok_idx.end());
res = string(N,'x');
for(auto id:ok_idx) res[id] = 'o';
return res;
}
int main(void) {
cin.tie(0); ios_base::sync_with_stdio(false);
cout << solve() << endl;
return 0;
}
kei