제출 #478256

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
478256		Kitonds	Bank (IZhO14_bank)	C++17	100 / 100	155 ms	16816 KiB

bank

#include <bits/stdc++.h>
 
using namespace std;
#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
#define read(A) freopen((A + ".in").c_str(),"r",stdin) 
#define write(A) freopen((A + ".out").c_str(),"w",stdout) 
#define ll long long
#define pb push_back
#define ull unsigned long long
#define int long long
#define f first
#define s second
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
typedef pair<int, int> ii;      
typedef vector<ii> vii;      
typedef vector<int> vi; 
typedef vector<ll> vl;
typedef pair<int, ii> iii;
typedef vector<iii> viii;
constexpr int pct(int x) { return __builtin_popcount(x); } 
const int DFS_WHITE = 0;
const int DFS_BLACK = 1;
const int INF = 1e18;
const int MAXN = 3e5 + 10;
const int MOD = 1e9 + 7 ;

void setIO(string filename = ""){
  ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
  if(filename.size() == 0)
    return;
  read(filename);
  write(filename);
}

int n, m, k;

void solve(){
  cin>>n>>m;
  vi A(n), B(m);
  for (int i=0; i<n; i++){
    cin>>A[i];
  }
  for (int i=0; i<m; i++){
    cin>>B[i];
  }
  vi cover(1 << m, -1);
  vi left(1 << m, -1);
  cover[0] = 0;
  left[0] = 0;
  for (int i=0; i<(1<<m); i++){
    for (int j=0; j<m; j++){
      if ((i & (1 << j)) == 0){
        continue;
      }
      int prev = i & (~(1 << j));
      if (cover[prev] == -1){
        continue;
      }
      int tmp = left[prev] + B[j];
      int cur = A[cover[prev]];
      if (tmp < cur){
        cover[i] = cover[prev];
        left[i] = tmp;
      }
      else if (tmp == cur){
        cover[i] = cover[prev] + 1;
        left[i] = 0;
      }
    }
  // /  cout<<i<<" "<<cover[i]<<endl;
    if (cover[i] == n){
      cout<<"YES";
      return;
    }
  }
  cout<<"NO";
} 

int tc = 1;
signed main() {
  setIO();
  int test = 1;
//  cin>>test;
  while(test--){
    solve();
  //  cout<<endl;
    tc++;
  }
}

컴파일 시 표준 에러 (stderr) 메시지

bank.cpp:5: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    5 | #pragma GCC optimization ("O3")
      | 
bank.cpp:6: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    6 | #pragma GCC optimization ("unroll-loops")
      | 
bank.cpp: In function 'void setIO(std::string)':
bank.cpp:7:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 | #define read(A) freopen((A + ".in").c_str(),"r",stdin)
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:34:3: note: in expansion of macro 'read'
   34 |   read(filename);
      |   ^~~~
bank.cpp:8:25: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 | #define write(A) freopen((A + ".out").c_str(),"w",stdout)
      |                  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:35:3: note: in expansion of macro 'write'
   35 |   write(filename);
      |   ^~~~~

• Subtask 1: 19 / 19
• Subtask 2: 25 / 25
• Subtask 3: 27 / 27
• Subtask 4: 29 / 29