Submission #300529

#	Time	Username	Problem	Language	Result	Execution time	Memory
300529		Dovran	Carnival Tickets (IOI20_tickets)	C++17	11 / 100	2 ms	768 KiB

tickets

#include <bits/stdc++.h>
#include "tickets.h"

#define N 2009
#define ll long long
#define pii pair<ll, ll>
#define ff first
#define ss second
#define sz() size()
#define pb push_back
#define pp() pop_back()

using namespace std;

ll n, m, x, ans, v[N];
pii c[N];

ll find_maximum(int k, vector<vector<int>>r){
	n=r.sz();
	m=r[0].sz();
	vector<vector<int>>y;
	y.resize(n);
	for(int i=0; i<n; i++)
		v[i]=r[i][0], y[i].pb(0);
	sort(v, v+n);
	for(int i=0; i<n; i++){
		c[i].ss=v[n-1]-v[i], c[i].ss+=c[i-1].ss;
		
		c[i].ff=v[i]-v[0], c[i].ff+=c[i-1].ff;
	}
	ll mn=1e18, in;
	for(int i=0; i<n; i++){
		//~ cout<<i<<' '<<c[i].ff<<' '<<c[i].ss<<' ';
		ll ans=c[i].ss-(v[n-1]-v[i])*(i+1);
//		cout<<ans<<' ';
//		if((c[n-1].ff-c[i].ff)>(v[i]-v[0])*(n-i))
		ans+=(c[n-1].ff-c[i].ff)-(v[i]-v[0])*(n-i-1);
		
//		cout<<ans<<' '<<c[n-1].ff-c[i].ff<<' '<<c[n-1].ff<<'\n';
		mn=min(mn, ans);
		if(mn==ans)
			in=i;
	}
	//~ cout<<in<<' ';
	allocate_tickets(y);
	return mn;
}
/*
int main(){

	int k;
	int l, r, y;
	vector<vector<int>>c;
	cin>>l>>r>>k;
	c.resize(l);
	for(int i=0; i<l; i++)
		for(int j=0; j<r; j++)
			cin>>y, c[i].pb(y);
	cout<<find_maximum(k, c);
}
*/

Compilation message (stderr)

tickets.cpp: In function 'long long int find_maximum(int, std::vector<std::vector<int> >)':
tickets.cpp:31:14: warning: variable 'in' set but not used [-Wunused-but-set-variable]
   31 |  ll mn=1e18, in;
      |              ^~

• Subtask 1: 11 / 11
• Subtask 2: 0 / 16
• Subtask 3: 0 / 14
• Subtask 4: 0 / 14
• Subtask 5: 0 / 12
• Subtask 6: 0 / 23
• Subtask 7: 0 / 10