Cod sursa(job #2660018)

Utilizator VladTZYVlad Tiganila VladTZY Data 18 octombrie 2020 00:09:29
Problema Loto Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.43 kb
#include <fstream>
#include <algorithm>

#define NMAX 101

using namespace std;

ifstream f("loto.in");
ofstream g("loto.out");

int n, sum, nr_sume;
int a[NMAX];

struct Sum_type{
   int sum;
   int a;
   int b;
};
Sum_type v[NMAX * NMAX * NMAX];

int cmp(Sum_type a, Sum_type b)
{
    return a.sum < b.sum;
}

int main()
{
    f >> n >> sum;
    for(int i = 1; i <= n; i++)
        f >> a[i];

    for(int i = 1; i <= n; i++)
    {
        for(int j = i; j <= n; j++)
        {
            for(int k = j; k <= n; k++)
            {
                nr_sume++;
                v[nr_sume].sum = a[i] + a[j] + a[k];
                v[nr_sume].a = a[i];
                v[nr_sume].b = a[j];
            }
        }
    }
    sort(v + 1, v + 1 + nr_sume, cmp);

    for(int i = 1; i <= nr_sume; i++)
    {
        int need_to_find = sum - v[i].sum;
        int st = i, dr = nr_sume;

        while(st <= dr)
        {
            int mij = (st + dr) / 2;

            if(v[mij].sum == need_to_find)
            {
                g << v[i].a << " " << v[i].b << " " << v[i].sum - v[i].a - v[i].b << " " << v[mij].a << " " << v[mij].b << " " << v[mij].sum - v[mij].a - v[mij].b << "\n";
                return 0;
            }
            if(v[mij].sum < need_to_find)
                st = mij + 1;
            else
                dr = mij - 1;
        }
    }

    g << "-1\n";

    return 0;
}