#include <algorithm>
#include <functional>
#include <iostream>
#include <vector>
 
using namespace std;
 
struct gameObject{
	bool value;
	bool getDestroyed() const { return value; }
};
 
 
int main() {
	vector<gameObject> gameObjects = {gameObject{true}, gameObject{false}, gameObject{false}};
 
	cout << gameObjects.size() << endl;
 
	gameObjects.erase(remove_if(gameObjects.begin(), gameObjects.end(), mem_fn(&gameObject::getDestroyed)), end(gameObjects));
 
	cout << gameObjects.size() << endl;
}

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