Submission #501695

#	Time	Username	Problem	Language	Result	Execution time	Memory
501695		vinnipuh01	Art Exhibition (JOI18_art)	C++17	100 / 100	591 ms	56084 KiB

art

#include <iostream>
#include <bits/stdc++.h>
#include <cmath>
#include <algorithm>
#include <vector>
#include <deque>
#include <set>
#include <stack>
#include <string>
#include <map>
#include <queue>
#define int long long

using namespace std;

const long long oo = 1000000000000000000;

long long sum, ans = 0, mx = 0, mn = 1000000000, num, pos;


/*
    ViHHiPuh

   (( `'-""``""-'` ))
     )-__-_.._-__-(
   / --- (o _ o) --- \
   \ .-* ( .0. ) *-. /
   _'-. ,_ '=' _, .-'_
  / `;#'#'# - #'#'#;` \
 \_)) -----'#'----- ((_/
      # --------- #
  '# ------- ------ #'
  /..-'# ------- #'-.\
  _\...-\'# -- #'/-.../_
  ((____)- '#' -(____))


    cout << fixed << setprecision(6) << x;

    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    freopen ( "sum.in", "r", stdin )
*/

int n, m, a[ 500001 ], b[ 500001 ], p[ 500001 ];
vector <pair<int, int> > v;
set <int> st;
vector <int> vv;

main () {
	cin >> n;
	for ( int i = 1; i <= n; i ++ ) {
		cin >> a[ i ] >> b[ i ];
		v.push_back( { a[ i ], b[ i ] } );
	}
	sort( v.begin(), v.end() );
	for ( int i = 0; i < v.size(); i ++ ) {
		p[ i + 1 ] = p[ i ] + v[ i ].second;
	}
	for ( int i = 1; i <= n; i ++ ) {
		st.insert( p[ i - 1 ] - v[ i - 1 ].first );
		ans = max( ans, ( p[ i ] - v[ i - 1 ].first ) - *st.begin() );
	}
	cout << ans;
}


/*

(p[ i ] - p[j - 1] ) - (a[i] - a[j])
p[i] - p[j-1] - a[i] + a[j]
p[i] - a[i] - p[j-1] + a[j]

*/

Compilation message (stderr)

art.cpp:51:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   51 | main () {
      | ^~~~
art.cpp: In function 'int main()':
art.cpp:58:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |  for ( int i = 0; i < v.size(); i ++ ) {
      |                   ~~^~~~~~~~~~

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