Submission #697072

#	Time	Username	Problem	Language	Result	Execution time	Memory
697072		garam1732	Counting Mushrooms (IOI20_mushrooms)	C++14	56.50 / 100	10 ms	312 KiB

mushrooms

#include "mushrooms.h"
#include <bits/stdc++.h>
using namespace std;

vector<int> a, b;
int cnt = 100;

int count_mushrooms(int n) {
    a.push_back(0);

	std::vector<int> m;
	for(int i = 1; i < n && i <= 2*cnt; i++) {
        m = {0, i};
        int x = use_machine(m);

        if(x) b.push_back(i);
        else a.push_back(i);
	}

	if(a.size() + b.size() == n) return a.size();

	int res = a.size();
	if(a.size() >= cnt) {
        int idx = 2*cnt+1;
        while(idx < n) {
            m.clear();
            m.push_back(a[0]);
            for(int i = 1; i < a.size(); i++) {
                if(idx < n) m.push_back(idx++);
                m.push_back(a[i]);
            }

            res += (int)m.size()-(int)a.size()-use_machine(m)/2;
        }
	}
	else {
        int idx = 2*cnt+1;
        while(idx < n) {
            m.clear();
            m.push_back(b[0]);
            for(int i = 1; i < b.size(); i++) {
                if(idx < n) m.push_back(idx++);
                m.push_back(b[i]);
            }

            res += use_machine(m)/2;
        }
	}

	return res;
}

Compilation message (stderr)

mushrooms.cpp: In function 'int count_mushrooms(int)':
mushrooms.cpp:20:25: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   20 |  if(a.size() + b.size() == n) return a.size();
      |     ~~~~~~~~~~~~~~~~~~~~^~~~
mushrooms.cpp:23:14: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   23 |  if(a.size() >= cnt) {
      |     ~~~~~~~~~^~~~~~
mushrooms.cpp:28:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |             for(int i = 1; i < a.size(); i++) {
      |                            ~~^~~~~~~~~~
mushrooms.cpp:41:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |             for(int i = 1; i < b.size(); i++) {
      |                            ~~^~~~~~~~~~

• Subtask 1: 56.5 / 100