Submission #677716

#	Time	Username	Problem	Language	Result	Execution time	Memory
677716		ismayil	Bank (IZhO14_bank)	C++17	100 / 100	535 ms	131128 KiB

bank

#include <bits/stdc++.h>
#define ll long long
using namespace std;
vector<vector<int>> dp, cost;
vector<int> a, b;
int n, m;
int solve(int mask, int i){
  if(i == n) return 1;
  if(dp[mask][i] != -1) return dp[mask][i];
  for(auto s : cost[a[i]]){
    if((s & mask) == s){
      if(solve(mask ^ s, i + 1)){
        return dp[mask][i] = 1;
      }
    }
  }
  return dp[mask][i] = 0;
}
int main(){
  cin>>n>>m;
  a = vector<int>(n);
  b = vector<int>(m);
  dp = vector<vector<int>>((1<<m), vector<int>(n, -1));
  for(auto& i : a) cin>>i;
  for(auto& i : b) cin>>i;
  cost.resize(30005);
  for (int mask = 0; mask < (1<<m); mask++)
  {
    int total = 0;
    for (int i = 0; i < m; i++)
    {
      if(!(mask & (1<<i))) continue;
      total += b[i];
    }
    cost[total].push_back(mask);
  }
  cout<<(solve((1<<m) - 1, 0) ? "YES" : "NO");
}

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