Submission #789711

#	Time	Username	Problem	Language	Result	Execution time	Memory
789711		Bula	Art Exhibition (JOI18_art)	C++17	0 / 100	0 ms	212 KiB

art

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

#define ll long long
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define int ll
const ll mod=1e9+7;

main(){
	int n;
	cin>>n;
	vector< pair<int,int> > v(n+1);
	int sum = 0;
	for(int i=1;i<=n;i++){
		cin>>v[i].first>>v[i].second;
		sum += v[i].second;
	}
	
	sort(all(v));
	int l = 1,r = n,mx = v[n].first,mn = v[1].first,ans = sum - (mx - mn),c = sum;
	//cout << ans << endl;
	for(int i=n;i>=1;i--){
		int cur = c - (v[i].first - mn);
		if(cur >= ans){
			ans = cur;
			r = i;
		}
		c -= v[i].second;
	}
	//cout << ans << endl;
//	for(int i=1;i<=r;i++){
//		int cur = c - (v[r].first - v[i].first);
//		if(cur >= ans){
//			ans = cur;
//			l = i;
//		}
//		c -= v[i].second;
//	}
	cout << ans << endl;
}

Compilation message (stderr)

art.cpp:11:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   11 | main(){
      | ^~~~
art.cpp: In function 'int main()':
art.cpp:22:6: warning: unused variable 'l' [-Wunused-variable]
   22 |  int l = 1,r = n,mx = v[n].first,mn = v[1].first,ans = sum - (mx - mn),c = sum;
      |      ^
art.cpp:22:12: warning: variable 'r' set but not used [-Wunused-but-set-variable]
   22 |  int l = 1,r = n,mx = v[n].first,mn = v[1].first,ans = sum - (mx - mn),c = sum;
      |            ^

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