Submission #414206

#	Time	Username	Problem	Language	Result	Execution time	Memory
414206		cfalas	Carnival Tickets (IOI20_tickets)	C++14	0 / 100	1 ms	204 KiB

tickets

#include "tickets.h"
#include<bits/stdc++.h>
using namespace std;
#define mp make_pair
#define INF 10000000
#define MOD 1000000007
#define MID ((l+r)/2)
#define HASHMOD 2305843009213693951
#define ll long long
#define ull unsigned long long
#define F first
#define S second
typedef pair<ll, ll> ii;
typedef pair<ii, int> iii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef map<int, int> mii;

#define EPS 1e-6
#define FOR(i,n) for(int i=0;i<((int)(n));i++)
#define FORi(i,a,b) for(int i=((int)(a));i<((int)(b));i++)
#define FOA(v, a) for(auto v : a)

long long find_maximum(int k, std::vector<std::vector<int>> x) {
	int n = x.size();
	int m = x[0].size();
	vector<vi> answer(n);
	answer.assign(n, vector<int>(m, -1));
	vii maxa, mina;
	FOR(i,n){
		maxa.push_back({ *min_element(x[i].begin(), x[i].end()) - *max_element(x[i].begin(), x[i].end()), i});
		//mina.push_back({*min_element(x[i].begin(), x[i].end()), i});
	}
	sort(maxa.begin(), maxa.end());
	//sort(mina.begin(), mina.end());

	ll ans=0;

	FOR(i,n){
		int t = *min_element(x[i].begin(), x[i].end());
		FOR(j,m) if(x[i][j]==t){
			answer[i][j] = 0;
			break;
		}
		ans -= t;
	}
	FOR(i,n/2){
		ans-=maxa[i].F;
		ans+= 2* *min_element(x[maxa[i].S].begin(), x[maxa[i].S].end());
		int t = *max_element(x[maxa[i].S].begin(), x[maxa[i].S].end());

		FOR(j,m) answer[maxa[i].S][j] = -1;
		FOR(j,m) if(x[maxa[i].S][j]==t){
			answer[maxa[i].S][j] = 0;
			break;
		}
	}
	
	allocate_tickets(answer);
	return ans;
}

• Subtask 1: 0 / 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