Submission #407181

#	Time	Username	Problem	Language	Result	Execution time	Memory
407181		AmineTrabelsi	Counting Mushrooms (IOI20_mushrooms)	C++14	0 / 100	1 ms	200 KiB

mushrooms

#include "mushrooms.h"
#include <bits/stdc++.h>
using namespace std;
int count_mushrooms(int n) {
    int ans = 1;
    vector<int> a;
    int ind = 1;
    for(int i=1;i+9<n;i+=10){
        vector<int> m;
        for(int j=0;j<10;j++){
            m.push_back(i+j);
        }
        int cnt = use_machine(m);
        if(cnt == 0){
            vector<int> t;
            t.push_back(0);
            for(int j=0;j<(int)m.size();j++){
                t.push_back(m[j]);
            }
            int n_cnt = use_machine(t);
            if(n_cnt == 0){
                ans += 10;
                for(auto j:m)a.push_back(i+j);
            }
        }else{
            for(int j=0;j<(int)m.size();j++){
                if(use_machine({0,m[j]}) == 0){
                    a.push_back(m[j]);
                    ans++;
                }
            }
        }
        ind = i+10;
        if(a.size() >= 2)break;
    }
    if(a.size() >= 2){
        for(int i=ind;i+2<n;i+=3){
            vector<int> m = {0,i,a[0],i+1,a[1],i+2};
            int cnt = use_machine(m);
            if(cnt == 0){
                ans += 3;
            }else if(cnt == 1){
                ans += 2;
            }else if(cnt == 2){
                ans += 2;
            }else if(cnt == 3){
                ans += 1;
            }else if(cnt == 4){
                ans += 1;
            }
        }
    }
    while(ind < n){
        ans += use_machine({0,ind++}) == 0;
    }
    return ans;
}
/*
+3A
len = 3
AAAAAA : 0
+3
AAAAAB : 1
+2
ABAAAA : 2
AAABAA : 2
+2

ABAAAB : 3
AAABAB : 3
+1

ABABAA : 4
+1
ABABAB : 5
0
*/

• Subtask 1: 0 / 100