Submission #701376

#	Time	Username	Problem	Language	Result	Execution time	Memory
701376		mychecksedad	Art Exhibition (JOI18_art)	C++17	100 / 100	203 ms	28756 KiB

art

/* Author : Mychecksdead */
#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define PI 3.1415926535
#define pb push_back
#define all(x) x.begin(), x.end()
const int N = 1e6+100, M = 1e5+10, K = 20;

int n;
pair<ll, ll> a[N];
ll pref[N], dp[N];
void solve(){
  cin >> n;
  for(int i = 1; i <= n; ++i) cin >> a[i].first >> a[i].second;
  sort(a + 1, a + n + 1);
  pref[0] = dp[0] = 0;
  for(int i = 1; i <= n; ++i){
    pref[i] = pref[i - 1] + a[i].second - (i == n ? 0 : a[i + 1].first - a[i].first);
    dp[i] = min(pref[i], dp[i - 1]);
  }
  ll ans = 0;
  for(int i = 1; i <= n; ++i){
    ans = max(ans, pref[i] + (i == n ? 0 : a[i + 1].first - a[i].first) - dp[i - 1]);
  }
  cout << ans;
}


int main(){
  cin.tie(0); ios::sync_with_stdio(0);
  int T = 1, aa;
  // cin >> T;aa=T;
  while(T--){
    // cout << "Case #" << aa-T << ": ";
    solve();
    cout << '\n';
  }
  return 0;
 
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:34:14: warning: unused variable 'aa' [-Wunused-variable]
   34 |   int T = 1, aa;
      |              ^~

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