Submission #750304

#	Time	Username	Problem	Language	Result	Execution time	Memory
750304		mohav48173	Counting Mushrooms (IOI20_mushrooms)	C++14	52.44 / 100	13 ms	316 KiB

mushrooms

#include "mushrooms.h"
#include<bits/stdc++.h>
using namespace std;
const int cnt=300;
int count_mushrooms(int n) {
    vector<int>a,b;
    a.push_back(0);
    for(int i=1;i<=min(n-1,cnt);i++) {
        if(use_machine({0,i})==0)a.push_back(i);
        else b.push_back(i);
    }
    int ans=a.size();
    vector<int>cur;
    for(int i=cnt+1;i<n;i++) {
        cur.push_back(i);
        if(cur.size()>=max((int)a.size(),(int)b.size())) {
            vector<int>ask;
            bool flag=0;
            if(a.size()<b.size()){swap(a,b);flag=1;}
            for(int j=0;j<cur.size();j++) {
                ask.push_back(a[j]);
                ask.push_back(cur[j]);
            }
            int current=use_machine(ask);
            int nums=0;
            nums+=current%2;
            current-=current%2;
            nums+=current/2;
            if(!flag)nums=cur.size()-nums;
            ans+=nums;
            if(flag)swap(a,b);
            cur.clear();
        }
    }
    if(cur.size()!=0) {
        vector<int>ask;
            bool flag=0;
            if(a.size()<b.size()){swap(a,b);flag=1;}
            for(int j=0;j<cur.size();j++) {
                ask.push_back(a[j]);
                ask.push_back(cur[j]);
            }
            int current=use_machine(ask);
            int nums=0;
            nums+=current%2;
            current-=current%2;
            nums+=current/2;
            if(!flag)nums=cur.size()-nums;
            ans+=nums;
            if(flag)swap(a,b);
            cur.clear();
    }
    return ans;
}

Compilation message (stderr)

mushrooms.cpp: In function 'int count_mushrooms(int)':
mushrooms.cpp:16:22: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'const int' [-Wsign-compare]
   16 |         if(cur.size()>=max((int)a.size(),(int)b.size())) {
      |            ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
mushrooms.cpp:20:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |             for(int j=0;j<cur.size();j++) {
      |                         ~^~~~~~~~~~~
mushrooms.cpp:39:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |             for(int j=0;j<cur.size();j++) {
      |                         ~^~~~~~~~~~~

• Subtask 1: 52.4362 / 100