Submission #1279573

#	Time	Username	Problem	Language	Result	Execution time	Memory
1279573		hanguyendanghuy	은행 (IZhO14_bank)	C++20	0 / 100	1 ms	716 KiB

bank

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define fi first
#define se second
constexpr ll MAXN=2e6+5,MAXV=1e5,MOD=1e9+7,INF=1e18;
ll n,m,i,j,p,k,ans,dem,st,en,a[MAXN],b[MAXN],giatri[MAXN];
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    freopen("test.inp","r",stdin);
    freopen("test.out","w",stdout);
    cin>>n>>m;
    for(i=1;i<=n;i++) cin>>a[i];
    for(i=0;i<m;i++) cin>>b[i];
    for(ll mask=1;mask<(1<<m);mask++){
        ll cnt=0;
        for(j=0;j<m;j++)
            if((mask>>j)&1) cnt+=b[j];
        giatri[mask]=cnt;
    }
    vector<ll> dung,luu;
    dung.pb(0);
    for(i=1;i<=n;i++){
        luu.clear();
        for(ll mask=1;mask<(1<<m);mask++){
            if(giatri[mask]==a[i]){

                for(ll x:dung){
                    if((x|mask)==(x^mask)) luu.pb((x|mask));
                }
            }
        }
        dung=luu;
    }
    if(dung.size()) cout<<"YES";
    else cout<<"NO";
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:12:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     freopen("test.inp","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
bank.cpp:13:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |     freopen("test.out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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