Submission #306418

#	Time	Username	Problem	Language	Result	Execution time	Memory
306418		eriksuenderhauf	Packing Biscuits (IOI20_biscuits)	C++17	100 / 100	18 ms	1024 KiB

biscuits

#include "biscuits.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define sz(x) (int)(x).size()

ll count_tastiness(ll x, vector<ll> a) {
  while (sz(a) < 60)
    a.push_back(0);
  vector<ll> dp(61,1), pref(61,0);
  dp[0] = 1;
  for (int i = 0; i < 60; i++) {
    pref[i] = (!i ? 0 : pref[i-1] / 2) + a[i];
    ll sm = 0;
    for (int j = i; j >= 0; j--) {
      if (pref[j] - sm >= x) {
        dp[i+1] += dp[j];
        sm += x;
      }
      sm = 2 * (sm - a[j]);
      sm = max(sm, 0ll);
    }
  }
  return dp[60];
}

• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 21 / 21
• Subtask 4: 35 / 35
• Subtask 5: 23 / 23