Submission #82696

#	Time	Username	Problem	Language	Result	Execution time	Memory
82696		heon	Unija (COCI17_unija)	C++11	60 / 100	376 ms	17072 KiB

unija

#include<bits/stdc++.h>

using namespace std;
int main(){
	
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	
	int n;
	cin >> n;
	vector <pair<int,int>> v;
	for(int i = 0; i < n; i++){
		int x,y;
		cin >> x >> y;
		x /= 2;
		y /= 2;
		v.push_back(make_pair(x,y));
	}
	sort(v.rbegin(), v.rend());
	/*
	for(auto x : v){
		cout << x.first << " " << x.second << "\n";
	}
	*/
	int mx = 0, my = 0;
	int lasty = 0;

	long long sol = 0;
	for(int i = 0; i < n; i++){
		if(v[i].first <= mx && v[i].second <= my) continue;
		//cout << "x -> " << v[i].first << " y -> " << v[i].second << " lasty -> " << lasty << "\n";
		sol += v[i].first * (v[i].second - my);
		mx = max(mx, v[i].first);
		my = max(my, v[i].second);
		//lasty = v[i].second;
	}
	cout << sol * 4;
}

Compilation message (stderr)

unija.cpp: In function 'int main()':
unija.cpp:26:6: warning: unused variable 'lasty' [-Wunused-variable]
  int lasty = 0;
      ^~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10