Submission #641799

#	Time	Username	Problem	Language	Result	Execution time	Memory
641799		dattranxxx	Jelly Flavours (IOI20_jelly)	C++17	100 / 100	148 ms	156988 KiB

jelly

#include "jelly.h"
#include <vector>
#include <algorithm>
using namespace std;
const int N = 2e3 + 5, M = 1e4 + 5;
using ii = pair<int, int>;
ii a[N], dp[N][M];
ii best(ii& u, ii& v) {
  if (u.first == v.first) return u.second < v.second ? u : v;
  return u.first > v.first ? u : v;
}
int n, X, Y;
int find_maximum_unique(int _x, int _y, std::vector<int> _a, std::vector<int> _b) {
	n = _a.size(), X = _x, Y = _y;
	for (int i = 1; i <= n; ++i)
	  a[i] = {_a[i-1], _b[i-1]};
	sort(a + 1, a + n + 1, [&](ii& u, ii& v) {
    return u.second < v.second;
  });
  for (int x = 0; x <= X; ++x)
    dp[0][x] = {0, 0};
  for (int i = 1; i <= n; ++i) for (int x = 0; x <= X; ++x) {
    dp[i][x] = dp[i-1][x];
    if (x >= a[i].first) {
      auto p = dp[i-1][x-a[i].first]; p.first++;
      dp[i][x] = best(dp[i][x], p);
    }
    if (dp[i-1][x].second + a[i].second <= Y) {
      auto p = dp[i-1][x]; p.first++; p.second += a[i].second;
      dp[i][x] = best(dp[i][x], p);
    }
  }
	return dp[n][X].first;
}

• Subtask 1: 11 / 11
• Subtask 2: 24 / 24
• Subtask 3: 9 / 9
• Subtask 4: 10 / 10
• Subtask 5: 14 / 14
• Subtask 6: 32 / 32