제출 #607480

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
607480		Jarif_Rahman	카니발 티켓 (IOI20_tickets)	C++17	14 / 100	459 ms	57664 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();
    vector<vector<int>> pos(n, vector<int>(m, -1));

    ll ans = 0;
    vector<int> cnt(n), o(n);
    for(int i = 0; i < n; i++){
        o[i] = i;
        cnt[i] = count(v[i].begin(), v[i].end(), 1);
    }

    vector<int> L(n, 0), R(n, m-1);

    for(int k = 0; k < K; k++){
        sort(o.begin(), o.end(), [&cnt](int a, int b){
            return cnt[a] < cnt[b];
        });

        for(int j = 0, i = o[0]; j < n/2; j++, i = o[j]){
            pos[i][L[i]] = k;
            if(v[i][L[i]]) cnt[i]--;
            ans-=v[i][L[i]];
            L[i]++;
        }
        for(int j = n/2, i = o[n/2]; j < n; j++, i = o[j]){
            pos[i][R[i]] = k;
            if(v[i][R[i]]) cnt[i]--;
            ans+=v[i][R[i]];
            R[i]--;
        }
    }

    allocate_tickets(pos);

    return ans;
}

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• Subtask 3: 14 / 14
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• Subtask 6: 0 / 23
• Subtask 7: 0 / 10