Submission #306965

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
306965	2020-09-26 15:23:06	baluteshih	Counting Mushrooms (IOI20_mushrooms)	C++14	100 / 100	10 ms	580 KiB

mushrooms

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#include "mushrooms.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
#define X first
#define Y second
#define ALL(v) v.begin(),v.end()
#define pb push_back
#define SZ(a) ((int)a.size())
const int K=90;
int count_mushrooms(int n)
{
    int ans=0;
    if(n<=227)
    {
        ++ans;
        for(int i=1;i<n;++i)
            ans+=(use_machine({0,i})==0);
        return ans;
    }
    srand(time(NULL));
    vector<int> num(n-1,0);
  vector<int> a(1,0),b;
    for(int i=0;i+1<n;++i)
        num[i]=i+1;
    random_shuffle(ALL(num));
 
 
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• Subtask 1: 100 / 100