Submission #800527

#	Time	Username	Problem	Language	Result	Execution time	Memory
800527		FEDIKUS	Counting Mushrooms (IOI20_mushrooms)	C++17	0 / 100	1 ms	208 KiB

mushrooms

#include "mushrooms.h"
#include <bits/stdc++.h>

using namespace std;

const int maxn=20010;

int count_mushrooms(int n) {
	vector<int> aovi;
	vector<int> bovi;
	int w=100;
	int ret=0;
	for(int i=1;i<n;i++){
		if(aovi.size()>=w){
			vector<int> tmp;
			for(int j=i;j<min(i+w,n);j++){
				tmp.push_back(aovi[j-i]);
				tmp.push_back(j);
			}
			int klkb=use_machine(tmp);
			klkb=klkb/2+(klkb&1);
			int klka=tmp.size()/2-klkb;
			ret+=klka;
			i+=w-1;
			continue;
		}
		if(bovi.size()>=w){
			vector<int> tmp;
			for(int j=i;j<min(i+w,n);j++){
				tmp.push_back(bovi[j-i]);
				tmp.push_back(j);
			}
			int klka=use_machine(tmp);
			klka=klka/2+(klka&1);
			ret+=klka;
			i+=w-1;
			continue;
		}
		if(use_machine({0,i})==0) aovi.push_back(i);
		else bovi.push_back(i);
		ret=aovi.size();
		if(aovi.size()>=w || bovi.size()>=w) break;
	}
	return ret+1;
}

Compilation message (stderr)

mushrooms.cpp: In function 'int count_mushrooms(int)':
mushrooms.cpp:14:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   14 |   if(aovi.size()>=w){
      |      ~~~~~~~~~~~^~~
mushrooms.cpp:27:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   27 |   if(bovi.size()>=w){
      |      ~~~~~~~~~~~^~~
mushrooms.cpp:42:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   42 |   if(aovi.size()>=w || bovi.size()>=w) break;
      |      ~~~~~~~~~~~^~~
mushrooms.cpp:42:35: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   42 |   if(aovi.size()>=w || bovi.size()>=w) break;
      |                        ~~~~~~~~~~~^~~

• Subtask 1: 0 / 100