#include "prize.h"
#include <bits/stdc++.h>
#define X first
#define Y second
using namespace std;
typedef long long llint;
const int maxn = 2e5+10;
int l[maxn], r[maxn];
int out = -1;
int maxi = 0;
pair<int,int> query(int x) {
if (l[x] != -1) return {l[x], r[x]};
vector< int > v = ask(x);
l[x] = v[0], r[x] = v[1];
return {l[x], r[x]};
}
void solve(int l, int r) {
if (l > r) return;
if (out != -1) return;
if (query(l).X + query(l).Y == 0) {
out = l;
return;
}
if (query(l).X + query(l).Y < maxi) {solve(l + 1, r); return;}
if (l == r) return;
if (query(r).X + query(r).Y == 0) {
out = r;
return;
}
if (query(r).X + query(r).Y < maxi) {solve(l, r - 1); return;}
if (query(l).X == query(r).X) return;
int mid = (l + r) / 2;
solve(l, mid);
solve(mid, r);
}
int find_best(int n) {
memset(l, -1, sizeof l);
for (int i = 0; i < min(300, n); i++) {
int x = rand() % n;
pair<int, int> tr = query(x);
if (tr.X + tr.Y == 0) return x;
maxi = max(maxi, tr.X + tr.Y);
}
solve(0, n - 1);
assert(out != -1);
return out;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
1616 KB |
Output is correct |
2 |
Correct |
3 ms |
1708 KB |
Output is correct |
3 |
Correct |
4 ms |
1676 KB |
Output is correct |
4 |
Correct |
4 ms |
1712 KB |
Output is correct |
5 |
Correct |
2 ms |
1672 KB |
Output is correct |
6 |
Correct |
3 ms |
1616 KB |
Output is correct |
7 |
Correct |
4 ms |
1616 KB |
Output is correct |
8 |
Correct |
4 ms |
1704 KB |
Output is correct |
9 |
Correct |
2 ms |
1676 KB |
Output is correct |
10 |
Correct |
4 ms |
1616 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
1704 KB |
Output is correct |
2 |
Correct |
4 ms |
1704 KB |
Output is correct |
3 |
Correct |
4 ms |
1620 KB |
Output is correct |
4 |
Correct |
4 ms |
1616 KB |
Output is correct |
5 |
Correct |
2 ms |
1680 KB |
Output is correct |
6 |
Correct |
3 ms |
1608 KB |
Output is correct |
7 |
Correct |
4 ms |
1604 KB |
Output is correct |
8 |
Correct |
2 ms |
1664 KB |
Output is correct |
9 |
Correct |
4 ms |
1616 KB |
Output is correct |
10 |
Correct |
3 ms |
1616 KB |
Output is correct |
11 |
Correct |
5 ms |
1684 KB |
Output is correct |
12 |
Correct |
2 ms |
1680 KB |
Output is correct |
13 |
Correct |
7 ms |
1744 KB |
Output is correct |
14 |
Correct |
5 ms |
1104 KB |
Output is correct |
15 |
Correct |
4 ms |
1728 KB |
Output is correct |
16 |
Correct |
2 ms |
1488 KB |
Output is correct |
17 |
Correct |
2 ms |
1664 KB |
Output is correct |
18 |
Correct |
38 ms |
1828 KB |
Output is correct |
19 |
Correct |
3 ms |
1720 KB |
Output is correct |
20 |
Correct |
9 ms |
1360 KB |
Output is correct |
21 |
Correct |
7 ms |
1760 KB |
Output is correct |
22 |
Correct |
6 ms |
1616 KB |
Output is correct |
23 |
Correct |
3 ms |
1616 KB |
Output is correct |
24 |
Correct |
3 ms |
1696 KB |
Output is correct |
25 |
Correct |
14 ms |
1736 KB |
Output is correct |
26 |
Correct |
12 ms |
1768 KB |
Output is correct |
27 |
Correct |
2 ms |
1680 KB |
Output is correct |
28 |
Correct |
37 ms |
1800 KB |
Output is correct |
29 |
Correct |
13 ms |
1812 KB |
Output is correct |
30 |
Correct |
34 ms |
1772 KB |
Output is correct |
31 |
Correct |
3 ms |
1700 KB |
Output is correct |
32 |
Correct |
3 ms |
1788 KB |
Output is correct |
33 |
Correct |
1 ms |
976 KB |
Output is correct |
34 |
Correct |
7 ms |
1760 KB |
Output is correct |
35 |
Correct |
2 ms |
1676 KB |
Output is correct |
36 |
Correct |
5 ms |
1744 KB |
Output is correct |
37 |
Correct |
4 ms |
1720 KB |
Output is correct |
38 |
Correct |
3 ms |
1616 KB |
Output is correct |
39 |
Correct |
20 ms |
1888 KB |
Output is correct |
40 |
Correct |
34 ms |
1824 KB |
Output is correct |
41 |
Correct |
25 ms |
1788 KB |
Output is correct |
42 |
Correct |
10 ms |
1792 KB |
Output is correct |
43 |
Correct |
25 ms |
1780 KB |
Output is correct |
44 |
Correct |
20 ms |
1728 KB |
Output is correct |
45 |
Correct |
6 ms |
1756 KB |
Output is correct |
46 |
Correct |
2 ms |
1680 KB |
Output is correct |
47 |
Correct |
19 ms |
1724 KB |
Output is correct |
48 |
Correct |
13 ms |
1804 KB |
Output is correct |
49 |
Correct |
6 ms |
1616 KB |
Output is correct |
50 |
Correct |
41 ms |
1728 KB |
Output is correct |
51 |
Correct |
17 ms |
1748 KB |
Output is correct |
52 |
Correct |
4 ms |
1608 KB |
Output is correct |
53 |
Correct |
3 ms |
1708 KB |
Output is correct |
54 |
Correct |
8 ms |
1788 KB |
Output is correct |
55 |
Correct |
2 ms |
1676 KB |
Output is correct |
56 |
Correct |
17 ms |
1840 KB |
Output is correct |
57 |
Correct |
23 ms |
1716 KB |
Output is correct |
58 |
Correct |
23 ms |
1732 KB |
Output is correct |
59 |
Correct |
20 ms |
1724 KB |
Output is correct |
60 |
Correct |
21 ms |
1700 KB |
Output is correct |
61 |
Correct |
2 ms |
1652 KB |
Output is correct |
62 |
Correct |
2 ms |
1648 KB |
Output is correct |
63 |
Correct |
5 ms |
1700 KB |
Output is correct |
64 |
Correct |
3 ms |
1616 KB |
Output is correct |
65 |
Correct |
3 ms |
1708 KB |
Output is correct |
66 |
Correct |
2 ms |
1668 KB |
Output is correct |
67 |
Correct |
7 ms |
1616 KB |
Output is correct |
68 |
Correct |
7 ms |
1616 KB |
Output is correct |
69 |
Correct |
2 ms |
1704 KB |
Output is correct |
70 |
Correct |
3 ms |
1672 KB |
Output is correct |
71 |
Partially correct |
41 ms |
1792 KB |
Partially correct - number of queries: 5051 |
72 |
Correct |
5 ms |
1748 KB |
Output is correct |
73 |
Correct |
41 ms |
1884 KB |
Output is correct |
74 |
Partially correct |
27 ms |
1808 KB |
Partially correct - number of queries: 5016 |
75 |
Correct |
4 ms |
1676 KB |
Output is correct |
76 |
Correct |
37 ms |
1788 KB |
Output is correct |
77 |
Partially correct |
41 ms |
1812 KB |
Partially correct - number of queries: 5019 |
78 |
Correct |
6 ms |
1804 KB |
Output is correct |
79 |
Correct |
21 ms |
1784 KB |
Output is correct |
80 |
Correct |
53 ms |
1732 KB |
Output is correct |
81 |
Partially correct |
31 ms |
1776 KB |
Partially correct - number of queries: 5028 |
82 |
Correct |
29 ms |
1992 KB |
Output is correct |
83 |
Correct |
3 ms |
1736 KB |
Output is correct |
84 |
Correct |
23 ms |
1812 KB |
Output is correct |
85 |
Partially correct |
28 ms |
1816 KB |
Partially correct - number of queries: 5018 |
86 |
Correct |
18 ms |
1736 KB |
Output is correct |
87 |
Correct |
3 ms |
1736 KB |
Output is correct |
88 |
Correct |
24 ms |
1816 KB |
Output is correct |
89 |
Correct |
7 ms |
1744 KB |
Output is correct |
90 |
Correct |
3 ms |
1744 KB |
Output is correct |
91 |
Correct |
13 ms |
1732 KB |
Output is correct |
92 |
Correct |
23 ms |
1996 KB |
Output is correct |
93 |
Execution timed out |
3070 ms |
1744 KB |
Time limit exceeded |
94 |
Halted |
0 ms |
0 KB |
- |