Stop pushing on the vector

For better performance

sa.hpp

@@ -58,25 +58,28 @@ class solution {
 			 	 its.insert(i);
 			 }
 
+			 this->items.resize(items.size());
+			 size_t i = 0;
+
 			 long long cap = capacity;
 
-	         	 while (!its.empty()) {
-	         	 	 auto itr = its.upper_bound(cap);
-	         	 	 if (itr == its.begin()) {
-	         	 	 	 cap = capacity;
-	         	 	 	 cap -= *its.begin();
-	         	 	 	 this->items.push_back(*its.begin());
-	         	 	 	 its.erase(its.begin());
-	         	 	 	 continue;
-	         	 	 }
-	         	 	 itr--;
-	         	 	 cap -= *itr;
-	         	 	 this->items.push_back(*itr);
-	         	 	 its.erase(itr);
-	         	 }
+			while (!its.empty()) {
+				auto itr = its.upper_bound(cap);
+				if (itr == its.begin()) {
+	        			cap = capacity;
+	        			cap -= *its.begin();
+	        			itr = its.begin();
+				} else {
+					itr--;
+					cap -= *itr;
+				}
+				this->items[i] = *itr;
+				its.erase(itr);
+				i++;
+			}
 
-	         	 fitness = calculate_boxes();
-	         }
+			fitness = calculate_boxes();
+		}
 
 	void setneighbor() { // Gera um vizinho da solução
 		std::uniform_int_distribution<> dist(0, items.size() - 1);