Submission #541702

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
541702	2022-03-24T08:27:34 Z	alextodoran	The Big Prize (IOI17_prize)	C++17	100 / 100	57 ms	2164 KB

prize

/**
 ____ ____ ____ ____ ____
||a |||t |||o |||d |||o ||
||__|||__|||__|||__|||__||
|/__\|/__\|/__\|/__\|/__\|

**/

#include <bits/stdc++.h>

#pragma GCC optimize ("unroll-loops")

using namespace std;

typedef long long ll;

vector <int> ask (int i);

vector <int> L, R;

void discover (int i) {
    if (L[i] == -1) {
        vector <int> resp = ask(i);
        L[i] = resp[0];
        R[i] = resp[1];
    }
}

map <int, map <int, int>> mp;

int solve (int l, int r) {
    int mid = (l + r) / 2;
    discover(mid);
    int cntLess = L[mid] + R[mid];
    if (cntLess == 0) {
        return mid;
    }
    mp[cntLess][mid] = L[mid];
    map <int, int> :: iterator it = mp[cntLess].find(mid);
    if (l < mid && (it == mp[cntLess].begin() || L[mid] - prev(it)->second > 0)) {
        int sl = solve(l, mid - 1);
        if (sl != -1) {
            return sl;
        }
    }
    if (mid < r && (next(it) == mp[cntLess].end() || next(it)->second - L[mid] > 0)) {
        int sr = solve(mid + 1, r);
        if (sr != -1) {
            return sr;
        }
    }
    return -1;
}

int find_best (int n) {
    L = vector <int> (n, -1);
    R = vector <int> (n, -1);
    return solve(0, n - 1);
}

Subtask #1

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	1872 KB	Output is correct
2	Correct	1 ms	1828 KB	Output is correct
3	Correct	1 ms	1828 KB	Output is correct
4	Correct	1 ms	1820 KB	Output is correct
5	Correct	1 ms	1804 KB	Output is correct
6	Correct	2 ms	1872 KB	Output is correct
7	Correct	2 ms	1828 KB	Output is correct
8	Correct	1 ms	1832 KB	Output is correct
9	Correct	1 ms	1824 KB	Output is correct
10	Correct	1 ms	1872 KB	Output is correct

Subtask #2

80.0 / 80.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	1804 KB	Output is correct
2	Correct	1 ms	1812 KB	Output is correct
3	Correct	1 ms	1824 KB	Output is correct
4	Correct	2 ms	1736 KB	Output is correct
5	Correct	1 ms	1824 KB	Output is correct
6	Correct	1 ms	1828 KB	Output is correct
7	Correct	1 ms	1872 KB	Output is correct
8	Correct	2 ms	1824 KB	Output is correct
9	Correct	1 ms	1824 KB	Output is correct
10	Correct	1 ms	1872 KB	Output is correct
11	Correct	4 ms	1820 KB	Output is correct
12	Correct	2 ms	1736 KB	Output is correct
13	Correct	5 ms	1872 KB	Output is correct
14	Correct	1 ms	464 KB	Output is correct
15	Correct	4 ms	2032 KB	Output is correct
16	Correct	29 ms	1992 KB	Output is correct
17	Correct	1 ms	1816 KB	Output is correct
18	Correct	40 ms	2020 KB	Output is correct
19	Correct	1 ms	1872 KB	Output is correct
20	Correct	9 ms	1060 KB	Output is correct
21	Correct	16 ms	1864 KB	Output is correct
22	Correct	3 ms	1892 KB	Output is correct
23	Correct	1 ms	1872 KB	Output is correct
24	Correct	1 ms	1872 KB	Output is correct
25	Correct	22 ms	1952 KB	Output is correct
26	Correct	17 ms	1904 KB	Output is correct
27	Correct	2 ms	1824 KB	Output is correct
28	Correct	32 ms	1944 KB	Output is correct
29	Correct	26 ms	1992 KB	Output is correct
30	Correct	40 ms	2064 KB	Output is correct
31	Correct	1 ms	1804 KB	Output is correct
32	Correct	3 ms	1808 KB	Output is correct
33	Correct	0 ms	208 KB	Output is correct
34	Correct	15 ms	1884 KB	Output is correct
35	Correct	2 ms	1884 KB	Output is correct
36	Correct	10 ms	1896 KB	Output is correct
37	Correct	2 ms	1872 KB	Output is correct
38	Correct	1 ms	1828 KB	Output is correct
39	Correct	18 ms	1948 KB	Output is correct
40	Correct	43 ms	1924 KB	Output is correct
41	Correct	22 ms	1948 KB	Output is correct
42	Correct	24 ms	1864 KB	Output is correct
43	Correct	20 ms	1864 KB	Output is correct
44	Correct	15 ms	1872 KB	Output is correct
45	Correct	10 ms	1960 KB	Output is correct
46	Correct	1 ms	1824 KB	Output is correct
47	Correct	18 ms	1872 KB	Output is correct
48	Correct	29 ms	2016 KB	Output is correct
49	Correct	4 ms	1828 KB	Output is correct
50	Correct	41 ms	1992 KB	Output is correct
51	Correct	16 ms	1888 KB	Output is correct
52	Correct	1 ms	1832 KB	Output is correct
53	Correct	2 ms	1932 KB	Output is correct
54	Correct	16 ms	1888 KB	Output is correct
55	Correct	1 ms	1832 KB	Output is correct
56	Correct	24 ms	2072 KB	Output is correct
57	Correct	30 ms	1924 KB	Output is correct
58	Correct	15 ms	2020 KB	Output is correct
59	Correct	23 ms	1948 KB	Output is correct
60	Correct	22 ms	1872 KB	Output is correct
61	Correct	2 ms	1872 KB	Output is correct
62	Correct	1 ms	1808 KB	Output is correct
63	Correct	3 ms	1872 KB	Output is correct
64	Correct	2 ms	1832 KB	Output is correct
65	Correct	2 ms	1872 KB	Output is correct
66	Correct	2 ms	1812 KB	Output is correct
67	Correct	2 ms	1816 KB	Output is correct
68	Correct	1 ms	1884 KB	Output is correct
69	Correct	2 ms	1872 KB	Output is correct
70	Correct	1 ms	1820 KB	Output is correct
71	Correct	57 ms	1992 KB	Output is correct
72	Correct	3 ms	1900 KB	Output is correct
73	Correct	49 ms	2020 KB	Output is correct
74	Correct	39 ms	2020 KB	Output is correct
75	Correct	2 ms	1880 KB	Output is correct
76	Correct	30 ms	2164 KB	Output is correct
77	Correct	42 ms	1992 KB	Output is correct
78	Correct	5 ms	1872 KB	Output is correct
79	Correct	20 ms	2132 KB	Output is correct
80	Correct	36 ms	2016 KB	Output is correct
81	Correct	39 ms	1992 KB	Output is correct
82	Correct	41 ms	2040 KB	Output is correct
83	Correct	2 ms	1800 KB	Output is correct
84	Correct	21 ms	2124 KB	Output is correct
85	Correct	30 ms	2056 KB	Output is correct
86	Correct	8 ms	1880 KB	Output is correct
87	Correct	5 ms	1872 KB	Output is correct
88	Correct	6 ms	1880 KB	Output is correct
89	Correct	6 ms	1872 KB	Output is correct
90	Correct	2 ms	1888 KB	Output is correct
91	Correct	5 ms	1876 KB	Output is correct
92	Correct	2 ms	1872 KB	Output is correct
93	Correct	3 ms	1872 KB	Output is correct
94	Correct	5 ms	1872 KB	Output is correct
95	Correct	5 ms	1872 KB	Output is correct
96	Correct	5 ms	1872 KB	Output is correct
97	Correct	1 ms	1872 KB	Output is correct