Submission #587913

#	Time	Username	Problem	Language	Result	Execution time	Memory
587913		Valaki2	Carnival Tickets (IOI20_tickets)	C++14	27 / 100	520 ms	107892 KiB

tickets

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

#define k K
#define x X

#define int long long
#define pb push_back
#define mp make_pair
#define fi first
#define se second

int n, m, k;
int ans_val;
vector<vector<int> > x;
vector<vector<int> > ans;

bool cmp(const int &a, const int &b) {
    return x[a][0] + x[a][m - 1] < x[b][0] + x[b][m - 1];
}

void solve() {
    vector<int> v(n, 0);
    for(int i = 0; i < n; i++) {
        v[i] = i;
    }
    sort(v.begin(), v.end(), cmp);
    for(int i = 0; i < n / 2; i++) {
        ans[v[i]][0] = 0;
        ans_val -= x[v[i]][0];
    }
    for(int i = n / 2; i < n; i++) {
        ans[v[i]][m - 1] = 0;
        ans_val += x[v[i]][m - 1];
    }
}

#undef k
#undef x
int find_maximum(signed k, vector<vector<signed> > x) {
	n = (int) x.size();
	m = (int) x[0].size();
    K = k;
    X.assign(n, vector<int> (m, -2));
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < m; j++) {
            X[i][j] = x[i][j];
        }
	}
#define k K
#define x X
	ans.assign(n, vector<int> (m, -1));
	solve();
	vector<vector<signed> > real_ans(n, vector<signed> (m, -2));
	for(int i = 0; i < n; i++) {
        for(int j = 0; j < m; j++) {
            real_ans[i][j] = ans[i][j];
        }
	}
	allocate_tickets(real_ans);
	return ans_val;
}

• 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