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Submission #1028646

# Submission time Handle Problem Language Result Execution time Memory
1028646 2024-07-20T06:38:35 Z DorostWef The Big Prize (IOI17_prize) C++17
95.15 / 100
 38 ms 596 KB 
#include "prize.h"
#include <bits/stdc++.h>

using namespace std;

int cnt;

int solve (int l, int r, int cl, int cr) {
	if (l > r || cl + cr == cnt)
		return 0;
	if (l == r) {
		vector<int> a = ask(l);
		if (a[0] + a[1] == 0)
			return l;
		return 0;
	}
	int mid = (l + r) >> 1;
	int mn = mid, mx = mid;
	for (int i = 0; i < (r - l + 1); i++) {
		int x;
		if (i % 2 == 1) {
			x = mid + i / 2 + 1;
		} else {
			x = mid - i / 2;
		}
		mn = min (mn, x);
		mx = max (mx, x);
		vector<int> a = ask(x);
		if (a[0] + a[1] == 0)
			return x;
		if (a[0] + a[1] == cnt) {
			return solve (l, mn - 1, cl, a[1]) ^ solve (mx + 1, r, a[0], cr);
		}
	}
	return 0;
}

int find_best(int n) {
	for (int i = 0; i < min (n, 473); i++) {
		vector<int> a = ask(i);
		if(a[0] + a[1] == 0)
			return i;
		cnt = max (cnt, a[0] + a[1]);
	}
	return solve (0, n - 1, 0, 0);
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 344 KB Output is correct
2 Correct 3 ms 344 KB Output is correct
3 Correct 2 ms 344 KB Output is correct
4 Correct 3 ms 344 KB Output is correct
5 Correct 3 ms 344 KB Output is correct
6 Correct 0 ms 436 KB Output is correct
7 Correct 3 ms 344 KB Output is correct
8 Correct 3 ms 344 KB Output is correct
9 Correct 3 ms 424 KB Output is correct
10 Correct 4 ms 344 KB Output is correct

Subtask #2
75.15 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 344 KB Output is correct
2 Correct 3 ms 344 KB Output is correct
3 Correct 2 ms 344 KB Output is correct
4 Correct 3 ms 344 KB Output is correct
5 Correct 2 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 2 ms 344 KB Output is correct
8 Correct 3 ms 344 KB Output is correct
9 Correct 3 ms 344 KB Output is correct
10 Correct 3 ms 340 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 6 ms 344 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 9 ms 344 KB Output is correct
15 Partially correct 18 ms 344 KB Partially correct - number of queries: 5162
16 Partially correct 35 ms 596 KB Partially correct - number of queries: 5388
17 Correct 2 ms 344 KB Output is correct
18 Partially correct 31 ms 344 KB Partially correct - number of queries: 5380
19 Correct 1 ms 344 KB Output is correct
20 Correct 16 ms 344 KB Output is correct
21 Partially correct 25 ms 344 KB Partially correct - number of queries: 5355
22 Correct 27 ms 344 KB Output is correct
23 Correct 4 ms 344 KB Output is correct
24 Correct 4 ms 344 KB Output is correct
25 Partially correct 21 ms 344 KB Partially correct - number of queries: 5029
26 Partially correct 24 ms 344 KB Partially correct - number of queries: 5005
27 Correct 3 ms 344 KB Output is correct
28 Correct 29 ms 344 KB Output is correct
29 Correct 15 ms 344 KB Output is correct
30 Partially correct 23 ms 344 KB Partially correct - number of queries: 5351
31 Correct 2 ms 344 KB Output is correct
32 Correct 3 ms 344 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Partially correct 30 ms 344 KB Partially correct - number of queries: 5375
35 Correct 4 ms 344 KB Output is correct
36 Partially correct 19 ms 344 KB Partially correct - number of queries: 5362
37 Correct 4 ms 344 KB Output is correct
38 Correct 3 ms 344 KB Output is correct
39 Partially correct 21 ms 344 KB Partially correct - number of queries: 5365
40 Correct 24 ms 344 KB Output is correct
41 Partially correct 28 ms 344 KB Partially correct - number of queries: 5402
42 Partially correct 33 ms 344 KB Partially correct - number of queries: 5402
43 Partially correct 28 ms 344 KB Partially correct - number of queries: 5250
44 Partially correct 21 ms 344 KB Partially correct - number of queries: 5385
45 Partially correct 25 ms 344 KB Partially correct - number of queries: 5013
46 Correct 3 ms 344 KB Output is correct
47 Partially correct 24 ms 344 KB Partially correct - number of queries: 5023
48 Partially correct 22 ms 344 KB Partially correct - number of queries: 5386
49 Partially correct 32 ms 344 KB Partially correct - number of queries: 5386
50 Partially correct 17 ms 344 KB Partially correct - number of queries: 5396
51 Partially correct 27 ms 344 KB Partially correct - number of queries: 5395
52 Partially correct 28 ms 344 KB Partially correct - number of queries: 5401
53 Correct 3 ms 344 KB Output is correct
54 Partially correct 23 ms 344 KB Partially correct - number of queries: 5347
55 Correct 2 ms 344 KB Output is correct
56 Partially correct 25 ms 344 KB Partially correct - number of queries: 5391
57 Partially correct 24 ms 344 KB Partially correct - number of queries: 5356
58 Partially correct 23 ms 344 KB Partially correct - number of queries: 5390
59 Partially correct 26 ms 344 KB Partially correct - number of queries: 5403
60 Partially correct 26 ms 344 KB Partially correct - number of queries: 5343
61 Correct 3 ms 344 KB Output is correct
62 Correct 3 ms 344 KB Output is correct
63 Correct 3 ms 344 KB Output is correct
64 Correct 4 ms 344 KB Output is correct
65 Correct 3 ms 344 KB Output is correct
66 Correct 3 ms 344 KB Output is correct
67 Correct 4 ms 344 KB Output is correct
68 Correct 2 ms 344 KB Output is correct
69 Correct 4 ms 344 KB Output is correct
70 Correct 2 ms 344 KB Output is correct
71 Partially correct 23 ms 344 KB Partially correct - number of queries: 5232
72 Correct 4 ms 344 KB Output is correct
73 Partially correct 19 ms 344 KB Partially correct - number of queries: 5169
74 Partially correct 27 ms 344 KB Partially correct - number of queries: 5196
75 Correct 3 ms 344 KB Output is correct
76 Correct 27 ms 344 KB Output is correct
77 Partially correct 20 ms 344 KB Partially correct - number of queries: 5476
78 Correct 4 ms 344 KB Output is correct
79 Correct 11 ms 344 KB Output is correct
80 Partially correct 25 ms 344 KB Partially correct - number of queries: 5485
81 Partially correct 38 ms 344 KB Partially correct - number of queries: 5472
82 Partially correct 32 ms 344 KB Partially correct - number of queries: 5451
83 Correct 2 ms 344 KB Output is correct
84 Correct 20 ms 344 KB Output is correct
85 Partially correct 24 ms 344 KB Partially correct - number of queries: 5456
86 Correct 4 ms 344 KB Output is correct
87 Correct 3 ms 344 KB Output is correct
88 Correct 4 ms 344 KB Output is correct
89 Correct 4 ms 344 KB Output is correct
90 Correct 2 ms 344 KB Output is correct
91 Correct 4 ms 344 KB Output is correct
92 Correct 5 ms 344 KB Output is correct
93 Correct 4 ms 344 KB Output is correct
94 Correct 6 ms 344 KB Output is correct
95 Correct 6 ms 340 KB Output is correct
96 Correct 6 ms 340 KB Output is correct
97 Correct 4 ms 344 KB Output is correct