Submission #433106

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
433106	2021-06-18T20:54:52 Z	peuch	Counting Mushrooms (IOI20_mushrooms)	C++17	25 / 100	154 ms	792 KB

mushrooms

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

int count_mushrooms(int n) {
	
	vector<int> ans (n);
	vector<int> marc (n);
	marc[0] = 1;
	ans[0] = 1;
	
	vector<int> ask;
	for(int i = 0; i < n; i++)
		ask.push_back(i);
	
	int val = use_machine(ask);
	marc[n - 1] = 1;
	ans[n - 1] = val % 2 == 0;
	
	int a = 0;
	if(val == 0) return n;
	else if(val == 1){
		ask.clear();
		ask.push_back(0);
		ask.push_back(1);
		if(use_machine(ask) == 1) return 1;
		a = 1;
		marc[1] = 1;
		ans[1] = 1;
	}
	else if(val % 2 == 0) a = n - 1;
	else{
		int ini = 1, fim = n - 1;
		while(ini != fim){
			int mid = (ini + fim) >> 1;
			ask.clear();
			ask.push_back(0);
			for(int i = ini; i <= mid; i++)
				ask.push_back(i);
			int aux = use_machine(ask);
			marc[mid] = 1;
			ans[mid] = aux % 2 == 0;
			if(aux % 2 == 0){
				a = mid;
				break;
			}
			if(aux == val) fim = mid - 1;
			else ini = mid + 1, val -= aux;
		}
		if(a == 0) return 1;
	}
	queue<int> fila;
	for(int i = 0; i < n; i++){
		if(marc[i]) continue;
		fila.push(i);
	}
	
	while(fila.size() > 1){
		int c = fila.front();
		fila.pop();
		int d = fila.front();
		fila.pop();
		vector<int> ask2 (4);
		ask2[0] = 0;
		ask2[1] = c;
		ask2[2] = a;
		ask2[3] = d;
		int aux = use_machine(ask2);
		if(aux == 0){
			ans[c] = 1;
			ans[d] = 1;
		}
		else if(aux == 1){
			ans[c] = 1;
			ans[d] = 0;
		}
		else if(aux == 2){
			ans[c] = 0;
			ans[d] = 1;
		}
		else if(aux == 3){
			ans[c] = 0;
			ans[d] = 0;
		}
	}
	if(!fila.empty()){
		int c = fila.front();
		fila.pop();
		vector<int> ask2 (2);
		ask2[0] = 0;
		ask2[1] = c;
		int aux = use_machine(ask2);
		if(aux == 0) ans[c] = 1;
		if(aux == 1) ans[c] = 0;
	}
	
	int ret = 0;
	for(int i = 0; i < n; i++)
		ret += ans[i];
	
	return ret;
}

Subtask #1

25.0 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	200 KB	Output is correct
2	Correct	0 ms	200 KB	Output is correct
3	Correct	1 ms	200 KB	Output is correct
4	Correct	1 ms	200 KB	Output is correct
5	Correct	1 ms	200 KB	Output is correct
6	Partially correct	10 ms	328 KB	Output is partially correct
7	Partially correct	93 ms	712 KB	Output is partially correct
8	Partially correct	93 ms	584 KB	Output is partially correct
9	Partially correct	88 ms	712 KB	Output is partially correct
10	Partially correct	74 ms	680 KB	Output is partially correct
11	Partially correct	82 ms	712 KB	Output is partially correct
12	Partially correct	102 ms	712 KB	Output is partially correct
13	Partially correct	85 ms	712 KB	Output is partially correct
14	Partially correct	53 ms	456 KB	Output is partially correct
15	Partially correct	104 ms	712 KB	Output is partially correct
16	Partially correct	95 ms	712 KB	Output is partially correct
17	Partially correct	47 ms	456 KB	Output is partially correct
18	Partially correct	81 ms	676 KB	Output is partially correct
19	Partially correct	70 ms	724 KB	Output is partially correct
20	Partially correct	92 ms	712 KB	Output is partially correct
21	Partially correct	57 ms	712 KB	Output is partially correct
22	Partially correct	103 ms	712 KB	Output is partially correct
23	Partially correct	118 ms	712 KB	Output is partially correct
24	Partially correct	50 ms	456 KB	Output is partially correct
25	Partially correct	88 ms	584 KB	Output is partially correct
26	Partially correct	56 ms	680 KB	Output is partially correct
27	Partially correct	106 ms	712 KB	Output is partially correct
28	Partially correct	89 ms	712 KB	Output is partially correct
29	Partially correct	62 ms	584 KB	Output is partially correct
30	Partially correct	92 ms	676 KB	Output is partially correct
31	Partially correct	125 ms	712 KB	Output is partially correct
32	Partially correct	95 ms	712 KB	Output is partially correct
33	Partially correct	102 ms	712 KB	Output is partially correct
34	Partially correct	87 ms	712 KB	Output is partially correct
35	Partially correct	97 ms	584 KB	Output is partially correct
36	Partially correct	96 ms	712 KB	Output is partially correct
37	Partially correct	94 ms	712 KB	Output is partially correct
38	Partially correct	104 ms	712 KB	Output is partially correct
39	Partially correct	82 ms	664 KB	Output is partially correct
40	Partially correct	116 ms	704 KB	Output is partially correct
41	Partially correct	77 ms	712 KB	Output is partially correct
42	Partially correct	79 ms	712 KB	Output is partially correct
43	Partially correct	109 ms	584 KB	Output is partially correct
44	Partially correct	88 ms	712 KB	Output is partially correct
45	Partially correct	81 ms	712 KB	Output is partially correct
46	Partially correct	128 ms	712 KB	Output is partially correct
47	Partially correct	90 ms	712 KB	Output is partially correct
48	Partially correct	82 ms	584 KB	Output is partially correct
49	Partially correct	154 ms	676 KB	Output is partially correct
50	Partially correct	98 ms	584 KB	Output is partially correct
51	Partially correct	112 ms	712 KB	Output is partially correct
52	Partially correct	100 ms	712 KB	Output is partially correct
53	Partially correct	94 ms	712 KB	Output is partially correct
54	Partially correct	66 ms	712 KB	Output is partially correct
55	Partially correct	102 ms	716 KB	Output is partially correct
56	Partially correct	94 ms	712 KB	Output is partially correct
57	Partially correct	95 ms	680 KB	Output is partially correct
58	Partially correct	95 ms	792 KB	Output is partially correct
59	Partially correct	93 ms	712 KB	Output is partially correct
60	Partially correct	91 ms	712 KB	Output is partially correct
61	Partially correct	106 ms	676 KB	Output is partially correct
62	Correct	0 ms	200 KB	Output is correct
63	Correct	1 ms	200 KB	Output is correct
64	Correct	1 ms	200 KB	Output is correct
65	Correct	0 ms	200 KB	Output is correct
66	Correct	1 ms	200 KB	Output is correct
67	Correct	1 ms	200 KB	Output is correct
68	Correct	1 ms	200 KB	Output is correct
69	Correct	1 ms	200 KB	Output is correct
70	Correct	0 ms	200 KB	Output is correct
71	Correct	1 ms	200 KB	Output is correct
72	Correct	0 ms	200 KB	Output is correct
73	Correct	0 ms	200 KB	Output is correct
74	Correct	0 ms	200 KB	Output is correct
75	Correct	1 ms	200 KB	Output is correct
76	Correct	1 ms	200 KB	Output is correct
77	Correct	1 ms	200 KB	Output is correct
78	Correct	1 ms	200 KB	Output is correct
79	Correct	0 ms	200 KB	Output is correct
80	Correct	1 ms	200 KB	Output is correct
81	Correct	0 ms	200 KB	Output is correct
82	Correct	1 ms	200 KB	Output is correct
83	Correct	1 ms	200 KB	Output is correct
84	Correct	1 ms	200 KB	Output is correct
85	Correct	1 ms	200 KB	Output is correct
86	Correct	0 ms	200 KB	Output is correct
87	Correct	0 ms	200 KB	Output is correct
88	Correct	1 ms	200 KB	Output is correct
89	Correct	1 ms	200 KB	Output is correct
90	Correct	1 ms	200 KB	Output is correct
91	Correct	0 ms	200 KB	Output is correct