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Cod sursa(job #878949)
#include<fstream>
#include<algorithm>
using namespace std;
ifstream f("loto.in");
ofstream g("loto.out");
int i1,i2,i3,i,n,v[110],t,S,poz,R;
struct el
{
int p1,p2,p3,s;
}D[200010];
int cm(el A,el B)
{
return A.s<B.s;
}
int cb(int k)
{
int p=1,u=n,m=(p+u)/2;
while(p<=u)
{
m=(p+u)/2;
if(k>D[m].s)
p=m+1;
else
if(k<D[m].s)
u=m-1;
else
if(k==D[m].s)
return m;
}
return 0;
}
void write()
{
g<<v[D[i].p1]<<" "<<v[D[i].p2]<<" "<<v[D[i].p3]<<" "<<v[D[poz].p1]<<" "<<v[D[poz].p2]<<" "<<v[D[poz].p3];
}
int main ()
{
f>>n>>S;
for(i=1;i<=n;++i)
f>>v[i];
for(i1=1;i1<=n;++i1)
for(i2=i1;i2<=n;++i2)
for(i3=i2;i3<=n;++i3)
{
D[++t].s=v[i1]+v[i2]+v[i3];
D[t].p1=i1;
D[t].p2=i2;
D[t].p3=i3;
}
sort(D+1,D+t+1,cm);
n=t;
for(i=1;i<=t;++i)
{
R=S-D[i].s;
poz=cb(R);
if(poz)
{
write(); return 0;
}
}
g<<-1;
return 0;
}