Submission #603228

#	Time	Username	Problem	Language	Result	Execution time	Memory
603228		Jarif_Rahman	Carnival Tickets (IOI20_tickets)	C++17	27 / 100	476 ms	51616 KiB

tickets

#include "tickets.h"
#include <bits/stdc++.h>
#define pb push_back
#define f first
#define sc second
using namespace std;
typedef long long int ll;
typedef string str;

ll find_maximum(int k, vector<vector<int>> v){
    int n = v.size(), m = v[0].size();

    ll ans = 0;
    for(int i = 0; i < n; i++) ans+=v[i][m-1];

    vector<int> s(n);
    for(int i = 0; i < n; i++) s[i] = i;
    sort(s.begin(), s.end(), [&](int a, int b){
        return v[a][0]+v[a][m-1] < v[b][0]+v[b][m-1];
    });

    vector<vector<int>> pos(n, vector<int>(m, -1));
    for(int i = 0; i < n; i++) pos[i][m-1] = 0;

    for(int i = 0; i < n/2; i++){
        ans-=v[s[i]][0]+v[s[i]][m-1];
        swap(pos[s[i]][0], pos[s[i]][m-1]);
    }

    allocate_tickets(pos);

    return ans;
}

• 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