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Cod sursa(job #253461)
#include<stdio.h>
#include<algorithm>
using namespace std;
struct sume{unsigned long long int s,a,b,c;} v[1100000];
unsigned long long int x[105],m,k,d;
int i,j,l,n,p,q,mij ;
int cmp(sume a,sume b)
{return a.s<b.s;}
int main(){
FILE *f=fopen("loto.in","r");
fscanf(f,"%d %lld",&n,&m);
for(i=1;i<=n;i++)
fscanf(f,"%lld",&x[i]);
fclose(f);
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
for(l=1;l<=n;l++)
{v[++k].s=x[i]+x[j]+x[l];
v[k].a=x[i];
v[k].b=x[j];
v[k].c=x[l];
}
sort(v+1,v+1+k,cmp);
FILE *g=fopen("loto.out","w");
for(i=1;i<=k&&v[i].s<=m/2;i++)
{d=m-v[i].s;
p=i;q=k;
while(p<=q)
{mij=(p+q)>>1;
if(v[mij].s==d)
{fprintf(g,"%lld %lld %lld %lld %lld %lld",v[i].a,v[i].b,v[i].c,v[mij].a,v[mij].b,v[mij].c);
fclose(g);
return 0;}
else
if(v[mij].s>d)
q=mij-1;
else
p=mij+1;
}
}
fprintf(g,"%d",-1);
fclose(g);
return 0;}