Submission #416197

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
416197	2021-06-02T07:05:52 Z	InternetPerson10	The Big Prize (IOI17_prize)	C++17	97.62 / 100	56 ms	1864 KB

prize

#include "prize.h"
#include <bits/stdc++.h>

using namespace std;

int le[200001], ri[200001];
map<int, int> ge;
vector<int> vec;

int bad, unfound = 0;

vector<int> asksk(int n) {
	if(le[n] >= 0) {
		vector<int> v;
		v.push_back(le[n]);
		v.push_back(ri[n]);
		return v;
	}
	else return ask(n);
}

int rec(int l, int r, int u) {
	// cout << l << ' ' << r << ' ' << u << "\n";
	int k = u;
	if(u == 0) return 0;
	int mid = (l+r)/2;
	int l_r, r_l; l_r = r_l = mid;
	while(l_r > l && u >= 0) {
		auto v = asksk(l_r);
		le[l_r] = v[0]; ri[l_r] = v[1];
		if(le[l_r] + ri[l_r] != bad) u--;
		else {
			u -= rec(l, l_r, le[l_r] - le[l]);
			break;
		}
		l_r--;
	}
	while(r_l < r && u >= 0) {
		auto v = asksk(r_l);
		le[r_l] = v[0]; ri[r_l] = v[1];
		if(le[r_l] + ri[r_l] != bad && r_l != mid) u--;
		else if(le[r_l] + ri[r_l] == bad) {
			u -= rec(r_l, r, k - le[r_l] + le[l]);
			break;
		}
		r_l++;
	}
	return k;
}

int find_best(int n) {
	for(int i = 0; i < n; i++) le[i] = ri[i] = -1;
	int k = 0;
	while(7 * k * k / 8 < n) {
		k++;
		if(k == n) break;
	}
	if(n <= 5000) k = n;
	for(int i = 0; i < k; i++) {
		auto v = asksk(i);
		le[i] = v[0]; ri[i] = v[1];
		if(ge.find(le[i] + ri[i]) == ge.end()) ge[le[i] + ri[i]] = 1;
		else ge[le[i] + ri[i]]++;
	}
	for(auto p : ge) {
		vec.push_back(p.first);
	}
	bad = vec[vec.size() - 1]; // sum of lowest prize
	unfound = bad;
	int st = 0;
	int buffer = 0;
	for(int i = 0; i < k; i++) {
		if(le[i] + ri[i] != bad) {
			buffer++;
		}
		else {
			unfound -= buffer; buffer = 0;
			st = i;
		}
	}
	rec(st, n, unfound);
	for(int i = 0; i < n; i++) {
		if(le[i] + ri[i] == 0) return i;
	}
	rec(0, n, bad);
	for(int i = 0; i < n; i++) {
		if(le[i] + ri[i] == 0) return i;
	}
	return bad+200000;
}
 

Subtask #1

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	1728 KB	Output is correct
2	Correct	6 ms	1824 KB	Output is correct
3	Correct	4 ms	1864 KB	Output is correct
4	Correct	3 ms	1832 KB	Output is correct
5	Correct	4 ms	1816 KB	Output is correct
6	Correct	6 ms	1736 KB	Output is correct
7	Correct	6 ms	1824 KB	Output is correct
8	Correct	3 ms	1864 KB	Output is correct
9	Correct	6 ms	1736 KB	Output is correct
10	Correct	5 ms	1736 KB	Output is correct

Subtask #2

77.62 / 80.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	1736 KB	Output is correct
2	Correct	4 ms	1816 KB	Output is correct
3	Correct	3 ms	1824 KB	Output is correct
4	Correct	5 ms	1824 KB	Output is correct
5	Correct	5 ms	1820 KB	Output is correct
6	Correct	3 ms	1820 KB	Output is correct
7	Correct	5 ms	1736 KB	Output is correct
8	Correct	3 ms	1820 KB	Output is correct
9	Correct	5 ms	1736 KB	Output is correct
10	Correct	6 ms	1736 KB	Output is correct
11	Correct	10 ms	1736 KB	Output is correct
12	Correct	5 ms	1820 KB	Output is correct
13	Correct	14 ms	1804 KB	Output is correct
14	Correct	14 ms	456 KB	Output is correct
15	Correct	39 ms	1728 KB	Output is correct
16	Partially correct	54 ms	1828 KB	Partially correct - number of queries: 5075
17	Partially correct	47 ms	1736 KB	Partially correct - number of queries: 5090
18	Partially correct	37 ms	1736 KB	Partially correct - number of queries: 5093
19	Correct	50 ms	1816 KB	Output is correct
20	Correct	36 ms	1060 KB	Output is correct
21	Partially correct	51 ms	1724 KB	Partially correct - number of queries: 5051
22	Correct	34 ms	1832 KB	Output is correct
23	Correct	6 ms	1832 KB	Output is correct
24	Correct	10 ms	1824 KB	Output is correct
25	Correct	51 ms	1804 KB	Output is correct
26	Correct	44 ms	1804 KB	Output is correct
27	Correct	5 ms	1820 KB	Output is correct
28	Correct	45 ms	1736 KB	Output is correct
29	Correct	46 ms	1736 KB	Output is correct
30	Partially correct	48 ms	1816 KB	Partially correct - number of queries: 5074
31	Partially correct	25 ms	1856 KB	Partially correct - number of queries: 5070
32	Correct	6 ms	1820 KB	Output is correct
33	Correct	2 ms	200 KB	Output is correct
34	Partially correct	51 ms	1820 KB	Partially correct - number of queries: 5058
35	Correct	7 ms	1816 KB	Output is correct
36	Partially correct	24 ms	1824 KB	Partially correct - number of queries: 5057
37	Correct	10 ms	1728 KB	Output is correct
38	Correct	8 ms	1736 KB	Output is correct
39	Partially correct	24 ms	1856 KB	Partially correct - number of queries: 5055
40	Correct	42 ms	1816 KB	Output is correct
41	Partially correct	42 ms	1828 KB	Partially correct - number of queries: 5092
42	Partially correct	45 ms	1824 KB	Partially correct - number of queries: 5092
43	Correct	52 ms	1736 KB	Output is correct
44	Partially correct	46 ms	1804 KB	Partially correct - number of queries: 5063
45	Correct	22 ms	1820 KB	Output is correct
46	Partially correct	24 ms	1816 KB	Partially correct - number of queries: 5054
47	Correct	38 ms	1736 KB	Output is correct
48	Partially correct	48 ms	1820 KB	Partially correct - number of queries: 5079
49	Partially correct	47 ms	1736 KB	Partially correct - number of queries: 5099
50	Partially correct	46 ms	1728 KB	Partially correct - number of queries: 5056
51	Partially correct	24 ms	1820 KB	Partially correct - number of queries: 5103
52	Partially correct	39 ms	1820 KB	Partially correct - number of queries: 5086
53	Correct	5 ms	1736 KB	Output is correct
54	Partially correct	50 ms	1832 KB	Partially correct - number of queries: 5057
55	Partially correct	39 ms	1820 KB	Partially correct - number of queries: 5092
56	Partially correct	28 ms	1736 KB	Partially correct - number of queries: 5102
57	Partially correct	46 ms	1816 KB	Partially correct - number of queries: 5036
58	Partially correct	46 ms	1824 KB	Partially correct - number of queries: 5079
59	Partially correct	44 ms	1804 KB	Partially correct - number of queries: 5091
60	Partially correct	39 ms	1728 KB	Partially correct - number of queries: 5068
61	Correct	7 ms	1828 KB	Output is correct
62	Correct	6 ms	1816 KB	Output is correct
63	Correct	7 ms	1812 KB	Output is correct
64	Correct	7 ms	1728 KB	Output is correct
65	Correct	6 ms	1736 KB	Output is correct
66	Correct	13 ms	1824 KB	Output is correct
67	Correct	9 ms	1836 KB	Output is correct
68	Correct	8 ms	1832 KB	Output is correct
69	Correct	8 ms	1736 KB	Output is correct
70	Correct	9 ms	1820 KB	Output is correct
71	Partially correct	44 ms	1736 KB	Partially correct - number of queries: 5238
72	Correct	10 ms	1736 KB	Output is correct
73	Partially correct	26 ms	1736 KB	Partially correct - number of queries: 5175
74	Partially correct	46 ms	1736 KB	Partially correct - number of queries: 5202
75	Correct	7 ms	1736 KB	Output is correct
76	Correct	43 ms	1736 KB	Output is correct
77	Partially correct	56 ms	1736 KB	Partially correct - number of queries: 5214
78	Correct	7 ms	1736 KB	Output is correct
79	Correct	27 ms	1736 KB	Output is correct
80	Partially correct	43 ms	1736 KB	Partially correct - number of queries: 5217
81	Partially correct	45 ms	1736 KB	Partially correct - number of queries: 5168
82	Partially correct	42 ms	1736 KB	Partially correct - number of queries: 5178
83	Correct	9 ms	1736 KB	Output is correct
84	Correct	38 ms	1736 KB	Output is correct
85	Partially correct	44 ms	1736 KB	Partially correct - number of queries: 5175
86	Correct	5 ms	1736 KB	Output is correct
87	Correct	5 ms	1736 KB	Output is correct
88	Correct	8 ms	1824 KB	Output is correct
89	Correct	6 ms	1736 KB	Output is correct
90	Correct	10 ms	1736 KB	Output is correct
91	Correct	5 ms	1828 KB	Output is correct
92	Correct	5 ms	1736 KB	Output is correct
93	Correct	9 ms	1736 KB	Output is correct
94	Correct	11 ms	1736 KB	Output is correct
95	Correct	7 ms	1736 KB	Output is correct
96	Correct	7 ms	1736 KB	Output is correct
97	Correct	7 ms	1736 KB	Output is correct