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Cod sursa(job #749433)
#include <iostream>
#include <fstream>
#include <vector>
#include <algorithm>
#define x first
#define y second
#define ll int
using namespace std;
int main() {
ifstream f("loto.in");
ofstream g("loto.out");
ll n, s, i, j, k, a, b, c, begin, end, mid, suma;
vector <ll> val;
vector <ll> v;
bool gasit=0;
f>>n>>s;
for(i=1; i<=n; i++) {
f>>k;
val.push_back(k);
}
for(i=0; i<val.size(); i++) {
for(j=i; j<val.size(); j++) {
for(k=j; k<val.size(); k++) {
v.push_back(val[i]+val[j]+val[k]);
}
}
}
sort(v.begin(), v.end());
for(i=0; i<val.size(); i++) {
for(j=i; j<val.size(); j++) {
for(k=j; k<val.size(); k++) {
if(!gasit) {
suma = val[i] + val[j] + val[k];
begin = -1;
end = v.size();
while(end-begin>1) {
mid = begin + (end-begin)/2;
if( suma + v[mid] > s ) end = mid;
else begin = mid;
}
if(v[begin] + suma == s) end=begin;
if(v[mid] + suma == s) end=mid;
if(v[end] + suma == s) {
g<<val[i]<<" "<<val[j]<<" "<<val[k]<<" ";
for(a=0; a<val.size(); a++)
for(b=0; b<val.size(); b++)
for(c=0; c<val.size(); c++)
if(!gasit) {
if(val[a]+val[b]+val[c]+suma==s) {
g<<val[a]<<" "<<val[b]<<" "<<val[c]<<"\n";
gasit=1;
}
}
gasit=1;
}
}
}
}
}
if(!gasit) g<<"-1\n";
f.close();
g.close();
return 0;
}