Submission #380802

#	Time	Username	Problem	Language	Result	Execution time	Memory
380802		Pichon5	Carnival Tickets (IOI20_tickets)	C++17	27 / 100	677 ms	73324 KiB

tickets

#include "tickets.h"
#include<bits/stdc++.h>
#define lcm(a,b) (a/__gcd(a,b))*b
#define fast ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define ll long long
#define vi vector<int>
#define vll vector<ll>
#define pb push_back
#define F first
#define S second
#define mp make_pair
using namespace std;
long long find_maximum(int k,vector<vi> x) {
	int n = x.size();
	int m = x[0].size();
	ll res=0;
	ll sum=0;
	vector<vi>M(n,vi(m,-1));
	vector<pair<int,int> >v;//sumas ,  indice
	for(int i=0;i<n;i++){
        res+=x[i][m-1];
        v.pb({x[i][0]+x[i][m-1],i});
	}
	sort(v.begin(),v.end());
	for(int i=0;i<n/2;i++){
        res-=v[i].F;
        M[v[i].S][0]=0;
	}
	for(int i=0;i<n;i++){
        if(M[i][0]==-1)M[i][m-1]=0;
	}
	allocate_tickets(M);
	return res;
}

Compilation message (stderr)

tickets.cpp: In function 'long long int find_maximum(int, std::vector<std::vector<int> >)':
tickets.cpp:17:5: warning: unused variable 'sum' [-Wunused-variable]
   17 |  ll sum=0;
      |     ^~~

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