oj.uz

Submission #407007

# Submission time Handle Problem Language Result Execution time Memory
407007 2021-05-18T10:17:26 Z ja_kingy The Big Prize (IOI17_prize) C++14
100 / 100
 74 ms 6060 KB 
#include "prize.h"
#include <iostream>
using namespace std;

vector<int> cache[200000];
int ans, cnt, done[200000], n;
vector<int> askc(int x) {
	if (!done[x]) {
		done[x] = 1;
		cache[x] = ask(x);
	}
	return cache[x];
}

void find(int l, int r, int el, int er) {
	if (r < l) return;
	if (cnt == el + er) return;
	int m = l+r>>1;
	int x = m;
	vector<int> res;
	for (; x <= r; x++) {
		res = askc(x);
		if (res[0] == 0 && res[1] == 0) ans = x;
		if (res[0] + res[1] > cnt) {
			cnt = res[0] + res[1];
			find(0, n-1, 0, 0);
		}
		if (res[0] + res[1] == cnt) break;
	}
	if (l != r) {
		find(l, m-1, el, x - m + res[1]);
		find(x+1, r, res[0], er);
	}
}

int find_best(int _n) {
	cnt = 1;
	n = _n;
	find(0, n-1, 0, 0);
	return ans;
}

Compilation message

prize.cpp: In function 'void find(int, int, int, int)':
prize.cpp:18:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   18 |  int m = l+r>>1;
      |          ~^~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4988 KB Output is correct
2 Correct 7 ms 4976 KB Output is correct
3 Correct 7 ms 4988 KB Output is correct
4 Correct 4 ms 4988 KB Output is correct
5 Correct 9 ms 4984 KB Output is correct
6 Correct 6 ms 4936 KB Output is correct
7 Correct 6 ms 4984 KB Output is correct
8 Correct 5 ms 4980 KB Output is correct
9 Correct 6 ms 4984 KB Output is correct
10 Correct 4 ms 4936 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4984 KB Output is correct
2 Correct 6 ms 4936 KB Output is correct
3 Correct 4 ms 4936 KB Output is correct
4 Correct 4 ms 5076 KB Output is correct
5 Correct 6 ms 4996 KB Output is correct
6 Correct 4 ms 4936 KB Output is correct
7 Correct 4 ms 5076 KB Output is correct
8 Correct 7 ms 4936 KB Output is correct
9 Correct 6 ms 4936 KB Output is correct
10 Correct 6 ms 4936 KB Output is correct
11 Correct 10 ms 5368 KB Output is correct
12 Correct 7 ms 5480 KB Output is correct
13 Correct 9 ms 5500 KB Output is correct
14 Correct 13 ms 5084 KB Output is correct
15 Correct 45 ms 5856 KB Output is correct
16 Correct 42 ms 5824 KB Output is correct
17 Correct 27 ms 5848 KB Output is correct
18 Correct 66 ms 5868 KB Output is correct
19 Correct 42 ms 5832 KB Output is correct
20 Correct 41 ms 5440 KB Output is correct
21 Correct 66 ms 5780 KB Output is correct
22 Correct 46 ms 5824 KB Output is correct
23 Correct 8 ms 5104 KB Output is correct
24 Correct 12 ms 5364 KB Output is correct
25 Correct 24 ms 5824 KB Output is correct
26 Correct 55 ms 5796 KB Output is correct
27 Correct 7 ms 5056 KB Output is correct
28 Correct 36 ms 5800 KB Output is correct
29 Correct 57 ms 5740 KB Output is correct
30 Correct 34 ms 5852 KB Output is correct
31 Correct 49 ms 5824 KB Output is correct
32 Correct 6 ms 5420 KB Output is correct
33 Correct 7 ms 4936 KB Output is correct
34 Correct 53 ms 5804 KB Output is correct
35 Correct 7 ms 5240 KB Output is correct
36 Correct 66 ms 5880 KB Output is correct
37 Correct 8 ms 5232 KB Output is correct
38 Correct 7 ms 5108 KB Output is correct
39 Correct 24 ms 5852 KB Output is correct
40 Correct 43 ms 5824 KB Output is correct
41 Correct 45 ms 5864 KB Output is correct
42 Correct 41 ms 5828 KB Output is correct
43 Correct 51 ms 5808 KB Output is correct
44 Correct 26 ms 5832 KB Output is correct
45 Correct 49 ms 5824 KB Output is correct
46 Correct 29 ms 5848 KB Output is correct
47 Correct 39 ms 5824 KB Output is correct
48 Correct 26 ms 5852 KB Output is correct
49 Correct 74 ms 5876 KB Output is correct
50 Correct 48 ms 5880 KB Output is correct
51 Correct 28 ms 5924 KB Output is correct
52 Correct 47 ms 5824 KB Output is correct
53 Correct 6 ms 5116 KB Output is correct
54 Correct 44 ms 5868 KB Output is correct
55 Correct 66 ms 5796 KB Output is correct
56 Correct 39 ms 5824 KB Output is correct
57 Correct 56 ms 5880 KB Output is correct
58 Correct 53 ms 5824 KB Output is correct
59 Correct 49 ms 5944 KB Output is correct
60 Correct 66 ms 5876 KB Output is correct
61 Correct 5 ms 5064 KB Output is correct
62 Correct 5 ms 5056 KB Output is correct
63 Correct 7 ms 5116 KB Output is correct
64 Correct 5 ms 5040 KB Output is correct
65 Correct 5 ms 4976 KB Output is correct
66 Correct 10 ms 4936 KB Output is correct
67 Correct 9 ms 4980 KB Output is correct
68 Correct 9 ms 4936 KB Output is correct
69 Correct 11 ms 4936 KB Output is correct
70 Correct 10 ms 4988 KB Output is correct
71 Correct 59 ms 5824 KB Output is correct
72 Correct 7 ms 5448 KB Output is correct
73 Correct 46 ms 6060 KB Output is correct
74 Correct 60 ms 5888 KB Output is correct
75 Correct 6 ms 5128 KB Output is correct
76 Correct 51 ms 5796 KB Output is correct
77 Correct 51 ms 5764 KB Output is correct
78 Correct 10 ms 5448 KB Output is correct
79 Correct 27 ms 5744 KB Output is correct
80 Correct 60 ms 5900 KB Output is correct
81 Correct 42 ms 5824 KB Output is correct
82 Correct 40 ms 5804 KB Output is correct
83 Correct 5 ms 5064 KB Output is correct
84 Correct 49 ms 5784 KB Output is correct
85 Correct 61 ms 5824 KB Output is correct
86 Correct 12 ms 5192 KB Output is correct
87 Correct 8 ms 5064 KB Output is correct
88 Correct 11 ms 5120 KB Output is correct
89 Correct 11 ms 5164 KB Output is correct
90 Correct 4 ms 5064 KB Output is correct
91 Correct 9 ms 5064 KB Output is correct
92 Correct 9 ms 5064 KB Output is correct
93 Correct 10 ms 5192 KB Output is correct
94 Correct 8 ms 5260 KB Output is correct
95 Correct 11 ms 5320 KB Output is correct
96 Correct 9 ms 5256 KB Output is correct
97 Correct 5 ms 4996 KB Output is correct