제출 #1279589

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1279589		hanguyendanghuy	은행 (IZhO14_bank)	C++20	0 / 100	1 ms	572 KiB

bank

#include <bits/stdc++.h>
using namespace std;
#define ll int
#define pb push_back
#define fi first
#define se second
constexpr ll MAXN=2e6+5,MAXV=1e5,MOD=1e9+7;
ll n,m,i,j,p,k,ans,dem,st,en,a[MAXN],b[MAXN],giatri[MAXN],mark[MAXN];
vector<ll> cnt[1005];
bool dp[2][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 dem=0;
        for(j=0;j<m;j++)
            if((mask>>j)&1) dem+=b[j];
        cnt[dem].pb(mask);
    }
    dp[1][0]=true;
    for(i=1;i<=n;i++){
        for(ll mask=0;mask<(1<<m);mask++){
            dp[(i&1)^1][mask]=false;
        }
        for(ll mask=0;mask<(1<<m);mask++){
            if(!dp[i&1][mask]) continue;
            for(ll x:cnt[a[i]])
                if((x|mask)==(x^mask)) dp[(i&1)^1][(x|mask)]=true;
        }
    }
    for(ll mask=1;mask<(1<<m);mask++){
        if(dp[(n-1)&1][mask]){
            cout<<"YES";
            return 0;
        }
    }
    cout<<"NO";
}

컴파일 시 표준 에러 (stderr) 메시지

bank.cpp: In function 'int main()':
bank.cpp:14:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |     freopen("test.inp","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
bank.cpp:15:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     freopen("test.out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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