Submission #378477

#	Time	Username	Problem	Language	Result	Execution time	Memory
378477		Ahmad_Hasan	Bank (IZhO14_bank)	C++17	100 / 100	435 ms	211948 KiB

bank

#include <bits/stdc++.h>
/**
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PLATINUM OVERFLOW;
*/


///#define int long long
using namespace std;
vector<int>subs[1000+5],v1,v2;
int n,m;
int dp[20+5][(1<<21)];
bool slv(int idx=0,int msk=0){
    ///cout<<idx<<' '<<msk<<'\n';
    if(idx==n)
        return true;
    if(dp[idx][msk]!=-1){
        return dp[idx][msk];
    }
    bool ret=false;
    for(int i=0;i<subs[v1[idx]].size();i++){
        if(!(msk&subs[v1[idx]][i])){
            ret=max(ret,slv(idx+1,msk|subs[v1[idx]][i]));
        }
        if(ret)
            return dp[idx][msk]=ret;
    }
    return dp[idx][msk]=ret;
}


int32_t main()
{/**
    freopen("arb2.in","r",stdin);
    freopen("arb2.out","w",stdout);*/
    ios_base::sync_with_stdio(0);
    cin.tie(0);      cout.tie(0);

    cin>>n>>m;
    v1=vector<int>(n);
    v2=vector<int>(m);
    for(int i=0;i<n;i++)
        cin>>v1[i];
    for(int i=0;i<m;i++)
        cin>>v2[i];

    for(int i=1;i<(1<<m);i++){
        int sum=0;
        for(int j=0;j<m;j++){
            if((1<<j)&i)
                sum+=v2[j];
        }
        if(sum<=1000)
            subs[sum].push_back(i);
    }
    memset(dp,-1,sizeof(dp));

    if(slv())
        cout<<"YES"<<'\n';
    else
        cout<<"NO"<<'\n';


    return 0;
}



/**
1
8 2
abczzzzz

*/

Compilation message (stderr)

bank.cpp: In function 'bool slv(int, int)':
bank.cpp:27:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for(int i=0;i<subs[v1[idx]].size();i++){
      |                 ~^~~~~~~~~~~~~~~~~~~~~
bank.cpp:32:32: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   32 |             return dp[idx][msk]=ret;
      |                    ~~~~~~~~~~~~^~~~
bank.cpp:34:24: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   34 |     return dp[idx][msk]=ret;
      |            ~~~~~~~~~~~~^~~~

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