Submission #567129

#	Time	Username	Problem	Language	Result	Execution time	Memory
567129		almothana05	Kitchen (BOI19_kitchen)	C++14	51 / 100	63 ms	50320 KiB

kitchen

#include<bits/stdc++.h>
#define mod 1000000007
#define inf 100000000000000000
using namespace std;
vector<int>num, chef , pow2;
pair<int ,int>mask[40000];
int sub[400][300 * 400];
void im(){
   cout << "Impossible\n";
}
string bi(int x){
   string cmp;
   while(x){
      if(x % 2 == 0){
         cmp += '0';
      }
      else{
         cmp += '1';
      }
      x /= 2;
   }
   return cmp;
}
int main(){
   // ios_base::sync_with_stdio(false);
   // cin.tie(NULL);
   for(int i = 1; i < 1000000 ; i *= 2){
      pow2.push_back(i);
   }
   int menge,  numm , nummer , koch , mini , re = 0 , rechner = 0;
   cin >> menge >> koch >> mini;
   if(koch < mini){
      im();
      return 0;
   }
   for(int i = 0 ; i < menge ; i++){
      cin >> numm;
      re += numm;
      num.push_back(numm);
      if(numm < mini){
         im();
         return 0;
      }
   }
   for(int i = 0 ; i < koch ; i++){
      cin >> numm;
      rechner += numm;
      chef.push_back(numm);
   }
   ///////////////////////////////////////////////////////////////////////////////////////////
   if(mini == 1){
      sub[0][0] = 1;
      for(int i = 0 ; i < koch ; i++){
         for(int j = 0 ; j <= i * 300 ; j++){
            if(sub[i][j] == 1){
               sub[i + 1][j] = 1;
               sub[i + 1][j + chef[i]] = 1;
            // cout << "ja\n";
            }
         }
         // cout << "\n";
      }
      int erg = -1;
      for(int i = rechner - re ; i >= 0 ; i--){
         if(sub[koch][i] == 1){
            erg = rechner - re - i;
            break;   
         }
      }
      if(erg == -1){
         im();
         return 0;
      }
      else{
         cout << erg << "\n";
      }
      return 0;
   }
   mask[0] = {menge * mini , re};
   string s;
   for(int i = 1 ; i < pow2[koch] ; i++){
      s = bi(i);
      for(int j = 0 ; j < s.size() ; j++){
         if(s[j] == '1'){
            mask[i] = mask[i - pow2[j]];
            mask[i].first -= min(menge , chef[j]);
            mask[i].second -= chef[j];
         }
      }
   }
   int erg = mod;
   for(int i = 0 ; i < pow2[koch] ; i++){
      if(mask[i].first <= 0 && mask[i].second <= 0){
         erg = min(erg , -mask[i].second);
      }
   }
   if(erg == mod){
      im();
      return 0;
   }
   assert(erg>= 0);
   cout << erg << "\n";
}

Compilation message (stderr)

kitchen.cpp: In function 'int main()':
kitchen.cpp:83:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 |       for(int j = 0 ; j < s.size() ; j++){
      |                       ~~^~~~~~~~~~
kitchen.cpp:30:23: warning: unused variable 'nummer' [-Wunused-variable]
   30 |    int menge,  numm , nummer , koch , mini , re = 0 , rechner = 0;
      |                       ^~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 22 / 22
• Subtask 3: 20 / 20
• Subtask 4: 0 / 21
• Subtask 5: 0 / 28