Submission #1056469

#	Time	Username	Problem	Language	Result	Execution time	Memory
1056469		vjudge1	Bank (IZhO14_bank)	C++17	0 / 100	2 ms	604 KiB

bank

#include<bits/stdc++.h>
using namespace std;
#define task "rbp"
#define ii pair<int,int>
#define fi first
#define se second
#define int long long
#define ld double
#define mp make_pair
#define lg2 21
#define iii pair<int,ii>
#define iiii pair<ii,ii>
#define fii fi.fi
#define fis fi.se
#define sfi se.fi
#define see se.se
#define base 29
int dx[4]={0,1,0,-1};
int dy[4]={1,0,-1,0};
const int maxn=1e3+5;
const int mod=998244353;
const int maxi=1000;
const int them=1e6;
int n,m,a[maxn],b[maxn],vis[maxn];
ii dp[(1<<21)];
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    if(fopen(task".inp","r")){
    freopen(task".inp","r",stdin);
    freopen(task".out","w",stdout);}
    cin>>n>>m;
    for(int i=1;i<=n;i++)cin>>a[i];
    for(int i=0;i<m;i++)cin>>b[i];
    dp[0]={1,0};
    vis[0]=1;
    for(int i=1;i<(1<<m);i++)
    {
        for(int j=0;j<m;j++)
        {
            if(i&(1<<j)&&vis[i^(1<<j)])
            {
                ii d=dp[i^(1<<j)];
                d.se+=b[j];
                if(d.se<a[d.fi])
                {
                    dp[i]=d;
                    vis[i]=1;
                }
                else if(d.se==a[d.fi])
                {
                    vis[i]=1;
                    if(d.fi+1>n)
                    {
                        cout<<"YES";
                        return 0;
                    }
                    dp[i]={d.fi+1,0};
                }
            }
        }
    }
    cout<<"NO";
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:30:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |     freopen(task".inp","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
bank.cpp:31:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |     freopen(task".out","w",stdout);}
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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