Submission #987333

#	Time	Username	Problem	Language	Result	Execution time	Memory
987333		AdamGS	Packing Biscuits (IOI20_biscuits)	C++17	42 / 100	1085 ms	37600 KiB

biscuits

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include "biscuits.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(a, b) for(int a = 0; a < (b); ++a)
unordered_map<ll,ll>dp[65];
vector<ll>T;
ll x;
ll solve(ll a, ll b) {
  if(a==T.size()) return b/x+1;
  b+=T[a];
  if(dp[a].find(b)!=dp[a].end()) return dp[a][b];
  dp[a][b]=solve(a+1, b/2);
  if(b>=x) dp[a][b]+=solve(a+1, (b-x)/2);
  return dp[a][b];
}
ll count_tastiness(ll _x, vector<ll>_T) {
  T=_T; x=_x;
  rep(i, T.size()) dp[i].clear();
  return solve(0, 0);
}

Compilation message (stderr)

biscuits.cpp: In function 'll solve(ll, ll)':
biscuits.cpp:12:7: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |   if(a==T.size()) return b/x+1;
      |      ~^~~~~~~~~~
biscuits.cpp: In function 'll count_tastiness(ll, std::vector<long long int>)':
biscuits.cpp:7:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 | #define rep(a, b) for(int a = 0; a < (b); ++a)
      |                                    ^
biscuits.cpp:21:3: note: in expansion of macro 'rep'
   21 |   rep(i, T.size()) dp[i].clear();
      |   ^~~

• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 21 / 21
• Subtask 4: 0 / 35
• Subtask 5: 0 / 23