Submission #1087032

#	Time	Username	Problem	Language	Result	Execution time	Memory
1087032		quangminh412	Art Exhibition (JOI18_art)	C++14	10 / 100	5 ms	604 KiB

art

#include <bits/stdc++.h>
using namespace std;

/*
  John Watson
  https://codeforces.com/profile/quangminh98

  Mua Code nhu mua Florentino !!
*/

#define faster() ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define ll long long

const ll oo = 1e18;
const int maxn = 5e5 + 9;

int n;
ll a[maxn], b[maxn];

signed main()
{
	if (fopen("test.inp", "r"))
	{
		freopen("test.inp", "r", stdin);
		freopen("test.out", "w", stdout);
	}
	faster();

	cin >> n;
	for (int i = 0; i < n; i++) cin >> a[i] >> b[i];
	
	ll ans = -oo;
	for (int mask = 1; mask < (1 << n); mask++)
	{
		ll s = 0;
		ll mn = oo, mx = -oo;
		for (int i = 0; i < n; i++)
			if (mask >> i & 1)
			{
				mn = min(mn, a[i]);
				mx = max(mx, a[i]);
				s += b[i];
			}
		ans = max(ans, s - (mx - mn));
	}
	cout << ans << '\n';

	return 0;
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:24:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |   freopen("test.inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
art.cpp:25:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |   freopen("test.out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 50