Submission #191347

#	Time	Username	Problem	Language	Result	Execution time	Memory
191347		rzbt	Bank (IZhO14_bank)	C++14	100 / 100	218 ms	14576 KiB

bank

#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define MAXN 21
typedef long long ll;


using namespace std;

int n,m;
int a[MAXN],b[MAXN];
vector<int> moze[MAXN];
bool dp[MAXN][1<<MAXN];

void resi(int koji,int maska){
    //printf("   %d %d\n",koji,maska);
    if(koji==n){
        printf("YES");
        exit(0);
    }
    if(dp[koji][maska])return;
    dp[koji][maska]=true;
    for(auto x:moze[koji])
        if(!(x & maska) && !dp[koji+1][x|maska])
            resi(koji+1,x|maska);
}


int main()
{
    scanf("%d %d", &n, &m);
    for(int i=0;i<n;i++)
        scanf("%d",a+i);
    for(int i=0;i<m;i++)
        scanf("%d",b+i);
    for(int i=1;i<(1<<m);i++){

        int zbir=0;
        for(int j=0;j<m;j++){
            if(i&(1<<j)){
                zbir+=b[j];
            }
        }
        //printf("   %d %d\n",i,zbir);
        for(int j=0;j<n;j++)
            if(a[j]==zbir)moze[j].pb(i);

    }

    resi(0,0);
    printf("NO");

    return 0;
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:34:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &n, &m);
     ~~~~~^~~~~~~~~~~~~~~~~
bank.cpp:36:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",a+i);
         ~~~~~^~~~~~~~~~
bank.cpp:38:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",b+i);
         ~~~~~^~~~~~~~~~

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