#include<bits/stdc++.h>

using namespace std;

int main()
{
    long persons,budget,hotels,weeks,p;
    long avail_seats[10001],price[10001],costs[10001];

    while(scanf("%ld %ld %ld %ld",&persons,&budget,&hotels,&weeks) != EOF)
    {
        memset(avail_seats,0,sizeof(avail_seats));
        memset(price,0,sizeof(price));
       // memset(costs,1,sizeof(costs));

        int i,j,k=0;
        for(i=0; i<hotels; i++)
        {
            //scanf("%d",&price[i]);
            scanf("%ld",&p);
            for(j=0; j<weeks; j++)
            {
                scanf("%ld",&avail_seats[j]);
                if(avail_seats[j] >= weeks && avail_seats[j] >= persons)
                {
                    costs[k] = p*persons;
                    k++;
                }
            }
        }

        sort(costs,costs+k);

        for(int i=0; i<k; i++)
        {
            if(costs[i] < budget)
            {
                printf("%ld\n",costs[i]);
            }
            else
            {
                printf("stay home\n");
            }
            break;
        }
    }

    return 0;
}

Line 23: error: bits/stdc++.h: No such file or directory