Submission #303242

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
303242	2020-09-20 05:26:26	myungwoo	Carnival Tickets (IOI20_tickets)	C++17	27 / 100	778 ms	51500 KiB

tickets

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#include <bits/stdc++.h>
#include "tickets.h"
using namespace std;
#define debug(...) fprintf(stderr, __VA_ARGS__), fflush(stderr)
#define mt make_tuple
typedef tuple<int, int, int> tiii;
typedef long long lld;
lld find_maximum(int K, vector<vector<int>> A)
{
  int N = A.size();
  int M = A[0].size();
  lld ans = 0;
  vector<vector<int>> answer(N, vector<int>(M, -1));
  priority_queue <tiii> que;
  for (int i=0;i<N;i++){
    for (int k=0;k<K;k++) ans -= A[i][k], answer[i][k] = -2;
    que.push(mt(A[i][M-1]+A[i][K-1], i, M-1));
  }
  for (int k=0;k<K;k++){
    queue <tiii> todo;
    for (int i=0;i<N;i+=2){
      auto t = que.top(); que.pop();
      auto [v, p, q] = t;
      answer[p][K-(M-q)] = -1; answer[p][q] = k;
      ans += v;
      if (M-q > k && q > 0) todo.push(mt(A[p][q-1]+A[p][K-(M-q)-1], p, q-1));
      else if (q > 0) que.push(mt(A[p][q-1]+A[p][K-(M-q)-1], p, q-1));
 
 
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• 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