Submission #907450

#	Time	Username	Problem	Language	Result	Execution time	Memory
907450		zhasyn	Bank (IZhO14_bank)	C++14	0 / 100	3 ms	2396 KiB

bank

#include <bits/stdc++.h>
#define pb push_back
#define pf push_front
using namespace std;
#define F first
#define S second
typedef long long ll;
#define pii pair <int, int>
#define pll pair <ll, ll>
typedef long double ld;
const ll N = 1e6 + 1e5 + 10;
const ll mod = 998244353;

ll um(ll a, ll b){
	return ((1LL * a * b) % mod + mod) % mod;
}
ll subr(ll a, ll b){
	return ((1LL * a - b) % mod + mod) % mod;
}
int a[N], b[N], n, m;
int dp[N], last[N];
int main() {
	ios::sync_with_stdio(false);
  	cin.tie(NULL);
  	freopen("bank.in", "r", stdin);
  	freopen("bank.out", "w", stdout);
  	cin >> n >> m;
  	for(int i = 0; i < n; i++){
  		cin >> a[i];
  	}
  	for(int i = 0; i < m; i++){
  		cin >> b[i];
  	}
  	bool can = false;
  	for(int mask = 0; mask < (1 << m); mask++){
  		dp[mask] = -1;
  	}
  	dp[0] = 0;
  	for(int mask = 0; mask < (1 << m); mask++){
  		for(int dig = 0; dig < m; dig++){
  			if((mask & (1 << dig)) > 0){
  				int nw = mask ^ (1 << dig);
  				int mx = dp[nw], rest = last[nw];
  				
  				if(dp[nw] == -1) continue;
  				if(last[nw] + b[dig] == a[dp[nw]]){
  					mx++;
  					rest = 0;
  				} else rest += b[dig];
  				
  				if(mx >= dp[mask]){
  					dp[mask] = mx;
  					last[mask] = rest;
  				}
  			}
  		}
  		if(dp[mask] == n){
			can = true;
			break;
		}
  	}
  	if(can) cout << "YES\n";
  	else cout << "NO\n";
  return 0;
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:25:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |    freopen("bank.in", "r", stdin);
      |    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:26:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |    freopen("bank.out", "w", stdout);
      |    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 19
• Subtask 2: 0 / 25
• Subtask 3: 0 / 27
• Subtask 4: 0 / 29