Submission #264348

#	Time	Username	Problem	Language	Result	Execution time	Memory
264348		Marlov	Art Exhibition (JOI18_art)	C++14	0 / 100	1 ms	384 KiB

art

/*
Code by @marlov       
*/
#include <iostream>
#include <fstream>
#include <string>
#include <sstream>
#include <vector>
#include <string>
#include <cmath>
#include <algorithm>
#include <iomanip>
#include <utility>
#include <set>
#include <unordered_set>
#include <map>
#include <unordered_map>
#include <stack>
#include <queue>
#include <iterator>
using namespace std;
typedef long long ll;
typedef pair<int,int> pi;

#define maxN 500000

int N;
pair<int,int> arr[maxN];
int ts=0;
int result=0;

int main() {
	ios_base::sync_with_stdio(0); cin.tie(0);
	cin>>N;
	for(int i=0;i<N;i++){
		cin>>arr[i].first>>arr[i].second;
		ts+=arr[i].second;
	}
	sort(arr,arr+N);
	int p1=0;
	int p2=N-1;
	result=ts-(arr[N-1].first-arr[0].first);
	while(p1!=p2){
		int n1=(ts-arr[p1].second)-(arr[p2].first-arr[p1+1].first);
		int n2=(ts-arr[p2].second)-(arr[p2-1].first-arr[p1].first);
		if(n1>=n2){
			ts-=arr[p2].second;
			p2--;
			result=max(result,n1);
		}else{
			ts-=arr[p1].second;
			p1++;
			result=max(result,n2);
		}
	}
	cout<<result<<'\n';
    return 0;
}

/* stuff you should look for
	* int overflow, array bounds
	* special cases (n=1,n=0?)
	* do smth instead of nothing and stay organized
*/

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