Cod sursa(job #2121697)

Utilizator RazvanGutaGuta Razvan Alexandru RazvanGuta Data 4 februarie 2018 10:32:15
Problema Energii Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.08 kb
#include<fstream>
#include<algorithm>
using namespace std;
ifstream f("energii.in");
ofstream g("energii.out");
struct much
{
    int p,e;
}a[1001];
bool cmp(much x,much y)
{
    return x.e>y.e;
}
int n,G,v[3002],i,t,r[3002],s,j,sum;
int main()
{
    f>>n>>G;
    for(i=1;i<=n;i++)
        f>>a[i].e>>a[i].p;
        sum=G;
    sort(a+1,a+n+1,cmp);
    for(i=1;i<=n;i++)
    {
        for(t=1;t<=sum;t++)
            r[t]=0;
        s=0;
        v[a[i].e]=a[i].p;
        for(j=1;j<=sum;j++)
        {
            if(v[j]!=0&&j!=a[i].e&&!r[j])
            {
                s=a[j].p+a[i].p;

                if(s<=sum)
                {
                r[s]=1;
                if(v[s]==0)
                {
                    v[s]=a[s].p;
                }
                else
                v[s]=min(a[s].p,a[i].p+a[j].p);
                }
            }
        }
    }
int     mi=99999999;
    for(i=1;i<=sum;i++)
        if(v[G]!=0)
    {
        mi=min(mi,v[G]);
    }
    if(mi==0)
        g<<-1;
    else
        g<<mi;
    return 0;
}