Submission #923889

#	Time	Username	Problem	Language	Result	Execution time	Memory
923889		Webbly	Art Exhibition (JOI18_art)	C++17	30 / 100	3 ms	600 KiB

art

// Problem: A. ��� ��������
// Contest: Codeforces - EDLIGHT CAMP IOI #1
// URL: https://codeforces.com/group/3wt9BX8ZwP/contest/500376/problem/0
// Memory Limit: 256 MB
// Time Limit: 1000 ms
//
// Powered by CP Editor (https://cpeditor.org)

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//
//                  Solution
//                    Webbly, 27.01.2023
//
//
//                    Arsen ne katai
//
//
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////



#include<bits/stdc++.h>

/**
#include <algorithm>
#include <iostream>
#include <vector>
#include <queue>
#include <cmath>
#include <map>
#include <set>
#include <time.h>
*/
//#pragma GCC optimize("O3")
//#pragma GCC optimize("fast-loops")
/**
#pragma GCC optimize("-funsafe-loop-optimizations")
#pragma GCC optimize("-funroll-loops")
#pragma GCC optimize("-fwhole-program")
#pragma GCC optimize("Ofast,no-stack-protector")
#pragma GCC optimize("-fthread-jumps")
#pragma GCC optimize("-falign-functions")
#pragma GCC optimize("-falign-jumps")
#pragma GCC optimize("-falign-loops")
#pragma GCC optimize("-falign-labels")
#pragma GCC optimize("-fcaller-saves")
#pragma GCC optimize("-fcrossjumping")
#pragma GCC optimize("-fcse-follow-jumps")
#pragma GCC optimize("-fcse-skip-blocks")
#pragma GCC optimize("-fdelete-null-pointer-checks")
#pragma GCC optimize("-fdevirtualize")
#pragma GCC optimize("-fexpensive-optimizations")
#pragma GCC optimize("-fgcse")
#pragma GCC optimize("-fgcse-lm")
#pragma GCC optimize("-fhoist-adjacent-loads")
#pragma GCC optimize("-finline-small-functions")
#pragma GCC optimize("-findirect-inlining")
#pragma GCC optimize("-fipa-sra")
#pragma GCC optimize("-foptimize-sibling-calls")
#pragma GCC optimize("-fpartial-inlining")
#pragma GCC optimize("-fpeephole2")
#pragma GCC optimize("-freorder-blocks")
#pragma GCC optimize("-freorder-functions")
#pragma GCC optimize("-frerun-cse-after-loop")
#pragma GCC optimize("-fsched-interblock")
#pragma GCC optimize("-fsched-spec")
#pragma GCC optimize("-fschedule-insns")
#pragma GCC optimize("-fschedule-insns2")
#pragma GCC optimize("-fstrict-aliasing")
#pragma GCC optimize("-fstrict-overflow")
#pragma GCC optimize("-ftree-switch-conversion")
#pragma GCC optimize("-ftree-tail-merge")
#pragma GCC optimize("-ftree-pre")
#pragma GCC optimize("-ftree-vrp")
#pragma GCC target("avx")
*/
#define ll long long
#define pb push_back
#define mp make_pair
#define all(x) x.begin(),x.end()
#define flush cout.flush()

using namespace std;

const ll mod = (ll)1e9 + 7, mod3 = 998244353, inf = (ll)2e15, P = 31;

ll rnd(){
    ll x = rand();

    return rand() ^ x;
}

ll binpow (ll a, ll b){
    ll ans = 1;
    while(b){
        if (b & 1){
            ans *= a;

            ans %= mod;
        }

        b >>= 1;
        a *= a;

        a %= mod;
    }
    return ans;
}
ll gcd(ll a, ll b){
    return (b ? gcd(b, a % b) : a);
}
ll lcm(ll a, ll b){
    return a / gcd(a, b) * b;
}

struct tr{
    ll four, seven, inc, dec;
};

struct T{
    ll x, y;
};

ll n, m, k, a[500005], b[500005], p[500005];

T q[500005];

ll get(ll l, ll r){
	return p[r] - p[l - 1] - q[r].x + q[l].x;
}

void sarsen(){
    cin >> n;
    
    for (ll i = 1; i <= n; i++){
    	cin >> q[i].x >> q[i].y;
    }
    
    sort (q + 1, q + n + 1, [](T a, T b){
    	return a.x < b.x;
    });
    
    ll ans = 0;
    
    for (ll i = 1; i <= n; i++){
    	p[i] = p[i - 1] + q[i].y;
    	
    	ll l = 1, r = i;
    	
    	while(r - l > 10){
    		ll tl = l + (r - l) / 3, tr = r - (r - l) / 3;
    		
    		if (get(tl, i) > get(tr, i)){
    			r = tr;
    		}
    		
    		else l = tl;
    	}
    	
    	for (ll j = l; j <= r; j++) ans = max(ans, get(j, i));
    }
    
    cout << ans;
}

int main(){
    ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);

    //freopen("justforfood.in", "r", stdin);
    //freopen("justforfood.out", "w", stdout);

    ll TT = 1, tests = 1;

    //cin >> TT;

    while(TT--){
        //cout << "Case " << tests << ": ";

        sarsen();

        //tests++;
    }

    return 0;
}
/**

3 9 15 21 27 33 39 45

5 25 35 55 65 85 95


*/

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:174:16: warning: unused variable 'tests' [-Wunused-variable]
  174 |     ll TT = 1, tests = 1;
      |                ^~~~~

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