Submission #552473

#	Time	Username	Problem	Language	Result	Execution time	Memory
552473		Sharky	Art Exhibition (JOI18_art)	C++17	100 / 100	233 ms	24700 KiB

art

#include <bits/stdc++.h>
// --------------------
#define sharky using namespace
#define fai std
#define wrong ios_base::sync_with_stdio(0);
#define answer cin.tie(0);
// --------------------
sharky fai;

#define ll long long
#define ld long double
#define all(x) x.begin(), x.end()
#define sz(x) (ll) (x).size()
#define mp make_pair
#define pb push_back
#define fi first
#define se second
#define endl "\n"
#define vll vector<ll>
#define pl pair<ll, ll>
const int inf = 1e9 + 5;
const int MOD = 1e9 + 7;
#define FOR(i, a, b) for (ll i = a; i < (b); i++)
#define F0R(i, a) for (ll i = 0; i < (a); i++)
int main() {
    wrong answer
    ll n; cin >> n; vector<pl> v(n + 5);
    for (ll i = 1; i <= n; i++) cin >> v[i].fi >> v[i].se;
    sort(v.begin() + 1, v.begin() + n + 1);
    ll mx = 0;
    vll ps(n + 5, 0); 
    for (ll i = 1; i <= n; i++) ps[i] = ps[i - 1] + v[i].se;
    ll mx2 = -1e18;
    for (ll i = 1; i <= n; i++) {
        ll k = ps[i] - v[i].fi;
        mx2 = max(mx2, v[i].fi - ps[i - 1]);
        mx = max(mx, -v[i].fi + ps[i] + mx2);
    }
    cout << mx << endl; 
    return 0;
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:35:12: warning: unused variable 'k' [-Wunused-variable]
   35 |         ll k = ps[i] - v[i].fi;
      |            ^

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