結果

問題 No.10 ＋か×か
ユーザー fumiphysfumiphys
提出日時 2020-04-05 00:34:19
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 11 ms / 5,000 ms
コード長 3,500 bytes
コンパイル時間 1,628 ms
コンパイル使用メモリ 170,504 KB
実行使用メモリ 8,132 KB
最終ジャッジ日時 2024-12-14 15:44:02
合計ジャッジ時間 2,272 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge2
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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
6,820 KB
testcase_01 AC 2 ms
6,820 KB
testcase_02 AC 2 ms
6,816 KB
testcase_03 AC 11 ms
8,128 KB
testcase_04 AC 8 ms
7,468 KB
testcase_05 AC 3 ms
6,816 KB
testcase_06 AC 10 ms
8,132 KB
testcase_07 AC 8 ms
7,452 KB
testcase_08 AC 4 ms
6,820 KB
testcase_09 AC 5 ms
6,820 KB
testcase_10 AC 2 ms
6,820 KB
testcase_11 AC 2 ms
6,820 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 # 

// includes
#include <bits/stdc++.h>
using namespace std;

// macros
#define pb emplace_back
#define mk make_pair
#define FOR(i, a, b) for(int i=(a);i<(b);++i)
#define rep(i, n) FOR(i, 0, n)
#define rrep(i, n) for(int i=((int)(n)-1);i>=0;i--)
#define irep(itr, st) for(auto itr = (st).begin(); itr != (st).end(); ++itr)
#define irrep(itr, st) for(auto itr = (st).rbegin(); itr != (st).rend(); ++itr)
#define whole(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
#define bit(n) (1LL<<(n))
// functions
template <typename T> void unique(T& c){c.erase(std::unique(c.begin(), c.end()), c.end());}
template <class T>bool chmax(T &a, const T &b){if(a < b){a = b; return 1;} return 0;}
template <class T>bool chmin(T &a, const T &b){if(a > b){a = b; return 1;} return 0;}
template <typename T> istream &operator>>(istream &is, vector<T> &vec){for(auto &v: vec)is >> v; return is;}
template <typename T> ostream &operator<<(ostream &os, const vector<T>& vec){for(int i = 0; i < vec.size(); i++){ os << vec[i]; if(i + 1 != vec.size())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const set<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const unordered_set<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const multiset<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const unordered_multiset<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &p){os << "(" << p.first << ", " << p.second << ")"; return os;}
template <typename T1, typename T2> ostream &operator<<(ostream &os, const map<T1, T2> &mp){for(auto itr = mp.begin(); itr != mp.end(); ++itr){ os << "(" << itr->first << ", " << itr->second << ")"; auto titr = itr; if(++titr != mp.end())os << " "; } return os;}
template <typename T1, typename T2> ostream &operator<<(ostream &os, const unordered_map<T1, T2> &mp){for(auto itr = mp.begin(); itr != mp.end(); ++itr){ os << "(" << itr->first << ", " << itr->second << ")"; auto titr = itr; if(++titr != mp.end())os << " "; } return os;}
//  types
using ll = long long int;
using P = pair<int, int>;
// constants
const int inf = 1e9;
const ll linf = 1LL << 50;
const double EPS = 1e-10;
const int mod = 1000000007;
const int dx[4] = {-1, 0, 1, 0};
const int dy[4] = {0, -1, 0, 1};
// io
struct fast_io{
  fast_io(){ios_base::sync_with_stdio(false); cin.tie(nullptr); cout << fixed << setprecision(20);}
} fast_io_;

bool dp[51][100010];

int main(int argc, char const* argv[])
{
  int n, total; cin >> n >> total;
  vector<int> a(n); cin >> a;
  dp[n-1][total] = true;
  rrep(i, n - 1){
    rep(j, total + 1){
      if(j+a[i+1]<=total)dp[i][j] |= dp[i+1][j+a[i+1]];
      if(j*a[i+1]<=total)dp[i][j] |= dp[i+1][j*a[i+1]];
    }
  }
  string res = "";
  int curr = a[0];
  for(int i = 1; i < n; i++){
    if(dp[i][curr+a[i]]){
      res += '+';
      curr += a[i];
    }else{
      res += '*';
      curr *= a[i];
    }
  }

  cout << res << endl;
  return 0;
}
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