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Submission #294908

# Submission time Handle Problem Language Result Execution time Memory
294908 2020-09-09T10:32:06 Z VodkaInTheJar The Big Prize (IOI17_prize) C++14
90 / 100
 92 ms 416 KB 
#include <bits/stdc++.h>
#include "prize.h"
 
using namespace std;
mt19937 random_generator(chrono::steady_clock::now().time_since_epoch().count());
 
const int maxn = 2e5 + 3; 
 
/*
int m; 
int a[maxn];
vector <int> ask(int x)
{
	vector <int> ans;
	ans.resize(2);
	ans[0] = ans[1] = 0; 
	
	for (int i = 0; i < x; i++)
	if (a[i] < a[x])
	ans[0]++;
	
	for (int i = x + 1; i < m; i++)
	if (a[i] < a[x])
	ans[1]++;
	
	return ans;
}
*/
 
int max_sum; 
int find_best(int n)
{
	for (int i = 0; i < min(n, 600); i++)
	{
		auto curr = ask(i);
		max_sum = max(max_sum, curr[0] + curr[1]);
	}
	
	for (int i = 0; i < n; )
	{
		auto curr = ask(i);
		if (curr[0] + curr[1] == 0)
		return i; 
		
		if (curr[0] + curr[1] != max_sum)
		{
			i++;
			continue;
		}
		
		int low = i+1, high = n-1; 
		while (low < high)
		{
			int mid = (low + high) / 2;
			auto temp = ask(mid);
			
			if (temp[0] != curr[0] || temp[1] != curr[1])
			high = mid;
			
			else 
			low = mid + 1; 
		}
		
		i = low; 
	}
}
 
/*
int main()
{
	cin >> m;
	for (int i = 0; i < m; i++)
	cin >> a[i];
	
	cout << find_best(m) << endl; 
}
*/

Compilation message

prize.cpp: In function 'int find_best(int)':
prize.cpp:66:1: warning: control reaches end of non-void function [-Wreturn-type]
   66 | }
      | ^

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 256 KB Output is correct
2 Correct 6 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 8 ms 256 KB Output is correct
5 Correct 6 ms 256 KB Output is correct
6 Correct 6 ms 256 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 6 ms 256 KB Output is correct
9 Correct 8 ms 256 KB Output is correct
10 Correct 5 ms 256 KB Output is correct

Subtask #2
70.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 256 KB Output is correct
2 Correct 6 ms 256 KB Output is correct
3 Correct 7 ms 256 KB Output is correct
4 Correct 7 ms 256 KB Output is correct
5 Correct 6 ms 256 KB Output is correct
6 Correct 7 ms 256 KB Output is correct
7 Correct 6 ms 384 KB Output is correct
8 Correct 6 ms 256 KB Output is correct
9 Correct 7 ms 256 KB Output is correct
10 Correct 6 ms 256 KB Output is correct
11 Correct 8 ms 256 KB Output is correct
12 Correct 6 ms 256 KB Output is correct
13 Correct 6 ms 376 KB Output is correct
14 Correct 11 ms 256 KB Output is correct
15 Correct 18 ms 256 KB Output is correct
16 Partially correct 65 ms 256 KB Partially correct - number of queries: 7933
17 Correct 4 ms 256 KB Output is correct
18 Partially correct 50 ms 384 KB Partially correct - number of queries: 9211
19 Correct 4 ms 376 KB Output is correct
20 Correct 30 ms 256 KB Output is correct
21 Correct 38 ms 256 KB Output is correct
22 Correct 11 ms 256 KB Output is correct
23 Correct 4 ms 384 KB Output is correct
24 Correct 7 ms 384 KB Output is correct
25 Partially correct 52 ms 256 KB Partially correct - number of queries: 5478
26 Partially correct 40 ms 256 KB Partially correct - number of queries: 5404
27 Correct 7 ms 256 KB Output is correct
28 Partially correct 72 ms 256 KB Partially correct - number of queries: 8777
29 Partially correct 53 ms 256 KB Partially correct - number of queries: 6793
30 Partially correct 66 ms 256 KB Partially correct - number of queries: 9160
31 Correct 6 ms 256 KB Output is correct
32 Correct 11 ms 256 KB Output is correct
33 Correct 2 ms 256 KB Output is correct
34 Correct 17 ms 376 KB Output is correct
35 Correct 8 ms 256 KB Output is correct
36 Correct 21 ms 256 KB Output is correct
37 Correct 10 ms 416 KB Output is correct
38 Correct 8 ms 256 KB Output is correct
39 Correct 35 ms 256 KB Output is correct
40 Partially correct 67 ms 372 KB Partially correct - number of queries: 7916
41 Partially correct 30 ms 376 KB Partially correct - number of queries: 5754
42 Partially correct 49 ms 256 KB Partially correct - number of queries: 5754
43 Partially correct 53 ms 256 KB Partially correct - number of queries: 5250
44 Correct 38 ms 256 KB Output is correct
45 Correct 41 ms 256 KB Output is correct
46 Correct 8 ms 256 KB Output is correct
47 Correct 39 ms 256 KB Output is correct
48 Partially correct 59 ms 256 KB Partially correct - number of queries: 6968
49 Correct 14 ms 256 KB Output is correct
50 Partially correct 70 ms 256 KB Partially correct - number of queries: 9208
51 Correct 39 ms 256 KB Output is correct
52 Correct 9 ms 256 KB Output is correct
53 Correct 7 ms 256 KB Output is correct
54 Correct 36 ms 256 KB Output is correct
55 Correct 5 ms 256 KB Output is correct
56 Partially correct 58 ms 360 KB Partially correct - number of queries: 9221
57 Partially correct 75 ms 256 KB Partially correct - number of queries: 6888
58 Partially correct 61 ms 256 KB Partially correct - number of queries: 6973
59 Partially correct 47 ms 256 KB Partially correct - number of queries: 5754
60 Partially correct 29 ms 256 KB Partially correct - number of queries: 5376
61 Correct 8 ms 256 KB Output is correct
62 Correct 6 ms 256 KB Output is correct
63 Correct 10 ms 256 KB Output is correct
64 Correct 4 ms 376 KB Output is correct
65 Correct 6 ms 256 KB Output is correct
66 Correct 10 ms 256 KB Output is correct
67 Correct 4 ms 256 KB Output is correct
68 Correct 9 ms 256 KB Output is correct
69 Correct 6 ms 376 KB Output is correct
70 Correct 8 ms 256 KB Output is correct
71 Partially correct 80 ms 256 KB Partially correct - number of queries: 9384
72 Correct 8 ms 256 KB Output is correct
73 Partially correct 85 ms 256 KB Partially correct - number of queries: 9256
74 Partially correct 79 ms 256 KB Partially correct - number of queries: 9314
75 Correct 8 ms 256 KB Output is correct
76 Partially correct 70 ms 256 KB Partially correct - number of queries: 8047
77 Partially correct 75 ms 256 KB Partially correct - number of queries: 9260
78 Correct 11 ms 256 KB Output is correct
79 Correct 38 ms 256 KB Output is correct
80 Partially correct 81 ms 256 KB Partially correct - number of queries: 9260
81 Partially correct 76 ms 256 KB Partially correct - number of queries: 9256
82 Partially correct 92 ms 256 KB Partially correct - number of queries: 9183
83 Correct 5 ms 384 KB Output is correct
84 Partially correct 54 ms 256 KB Partially correct - number of queries: 7661
85 Partially correct 68 ms 256 KB Partially correct - number of queries: 9256
86 Correct 9 ms 256 KB Output is correct
87 Correct 6 ms 256 KB Output is correct
88 Correct 11 ms 256 KB Output is correct
89 Correct 10 ms 288 KB Output is correct
90 Correct 6 ms 256 KB Output is correct
91 Correct 7 ms 256 KB Output is correct
92 Correct 9 ms 256 KB Output is correct
93 Correct 18 ms 256 KB Output is correct
94 Correct 14 ms 256 KB Output is correct
95 Correct 12 ms 256 KB Output is correct
96 Correct 13 ms 256 KB Output is correct
97 Correct 10 ms 256 KB Output is correct