제출 #729360

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
729360		pcc	Art Exhibition (JOI18_art)	C++14	100 / 100	182 ms	20396 KiB

art

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

#define ll long long
#define int ll
#define pll pair<ll,ll>
#define fs first
#define sc second


void solve(){
	ll n;
	cin>>n;
	pll tmp[n];
	for(auto &i:tmp){
		cin>>i.fs>>i.sc;
	}
	sort(tmp,tmp+n);
	vector<pll> arr;
	for(auto &i:tmp){
		if(arr.empty()||arr.back().fs != i.fs)arr.push_back(i);
		else arr.back().sc+=i.sc;
	}
	n = arr.size();
	ll pref[n];
	pref[0] = arr[0].sc;
	for(int i = 1;i<n;i++)pref[i] = pref[i-1]+arr[i].sc;
	ll ans = pref[0];
	ll big = arr[0].fs;
	for(int i = 1;i<n;i++){
		big = max(big,arr[i].fs-pref[i-1]);
		ans = max(ans,big+pref[i]-arr[i].fs);
	}
	cout<<ans;
}

/*
void solve(){
	ll n;
	cin>>n;
	pll arr[n];
	for(auto &i:arr)cin>>i.fs>>i.sc;
	ll ans = LLONG_MIN;
	for(ll i = 1;i<(1LL<<n);i++){
		ll amax = 0,amin = 1e18;
		ll sum = 0;
		for(int j = 0;j<n;j++){
			if(i&(1LL<<j))sum += arr[j].sc,amin = min(amin,arr[j].fs),amax = max(amax,arr[j].fs);
		}
		ans = max(ans,sum-amax+amin);
	}
	cout<<ans;
}
*/



main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int t = 1;
	while(t--)solve();
}

컴파일 시 표준 에러 (stderr) 메시지

art.cpp:58:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   58 | main(){
      | ^~~~

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