oj.uz

Submission #794511

# Submission time Handle Problem Language Result Execution time Memory
794511 2023-07-26T15:13:10 Z Sohsoh84 The Big Prize (IOI17_prize) C++17
100 / 100
 51 ms 5324 KB 
#include "prize.h"
#include <bits/stdc++.h>
 
using namespace std;
 
const int MAX = 500; // CHANGE
const int SQ = 256;
const int MAXN = 2e5 + 10;
 
#define debug(x)		cerr << #x << ": " << x << endl;
#define sep			' '
 
int n;
vector<int> res[MAXN];
bool B[MAXN];
 
inline vector<int> assk(int ind) {
	if (B[ind]) return res[ind];
	B[ind] = true;
	return res[ind] = ask(ind);
}
 
inline int sum(int ind) {
	vector<int> res = assk(ind);
	return res[0] + res[1];
}
 
inline int find_cheapest() {
	int best_val = 0;
	for (int i = 0; i < min(n, MAX); i++) {
		int val = sum(i);
		if (val > best_val)
			best_val = val;
 
	}
 
	return best_val;
}
 
inline int solve(int lim = 1) {
	int lc = 0;
	int ind = 0;
	while (ind < n) {
		int tr = min(ind + SQ - 1, n - 1);
		vector<int> res = assk(tr);
		if (sum(tr) > lim) return solve(sum(tr));
		if (res[0] + res[1] == lim && lc == res[0]) {
			ind = ind + SQ;	
			continue;
		}
 
		int l = ind, r = min(ind + SQ - 1, n - 1);
		while (l < r) {
			int mid = (l + r) >> 1;
			vector<int> res = assk(mid);
			if (sum(mid) > lim) return solve(sum(mid));
			if (res[0] + res[1] < lim || res[0] > lc) r = mid;
			else l = mid + 1;
		}
 
		if (sum(l) == 0) return l;
		if (sum(l) > lim) return solve(sum(l));

		ind = l + 1;
		lc++;
	}

	return 0;
}

int find_best(int n_) {
	n = n_;
	return solve();
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5024 KB Output is correct
2 Correct 7 ms 5120 KB Output is correct
3 Correct 7 ms 5000 KB Output is correct
4 Correct 10 ms 5208 KB Output is correct
5 Correct 5 ms 4992 KB Output is correct
6 Correct 2 ms 4992 KB Output is correct
7 Correct 6 ms 5072 KB Output is correct
8 Correct 7 ms 5052 KB Output is correct
9 Correct 6 ms 5092 KB Output is correct
10 Correct 9 ms 5116 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4944 KB Output is correct
2 Correct 7 ms 5072 KB Output is correct
3 Correct 6 ms 4996 KB Output is correct
4 Correct 6 ms 5128 KB Output is correct
5 Correct 4 ms 5080 KB Output is correct
6 Correct 3 ms 4996 KB Output is correct
7 Correct 7 ms 5064 KB Output is correct
8 Correct 7 ms 5068 KB Output is correct
9 Correct 6 ms 5084 KB Output is correct
10 Correct 9 ms 5164 KB Output is correct
11 Correct 5 ms 5052 KB Output is correct
12 Correct 3 ms 5004 KB Output is correct
13 Correct 9 ms 5128 KB Output is correct
14 Correct 5 ms 4944 KB Output is correct
15 Correct 9 ms 4944 KB Output is correct
16 Correct 25 ms 5232 KB Output is correct
17 Correct 3 ms 4944 KB Output is correct
18 Correct 40 ms 5272 KB Output is correct
19 Correct 3 ms 4944 KB Output is correct
20 Correct 8 ms 4992 KB Output is correct
21 Correct 17 ms 5068 KB Output is correct
22 Correct 6 ms 4944 KB Output is correct
23 Correct 4 ms 4992 KB Output is correct
24 Correct 3 ms 4944 KB Output is correct
25 Correct 25 ms 5160 KB Output is correct
26 Correct 27 ms 5128 KB Output is correct
27 Correct 5 ms 4996 KB Output is correct
28 Correct 40 ms 5192 KB Output is correct
29 Correct 30 ms 5224 KB Output is correct
30 Correct 43 ms 5324 KB Output is correct
31 Correct 3 ms 4996 KB Output is correct
32 Correct 11 ms 5120 KB Output is correct
33 Correct 2 ms 4944 KB Output is correct
34 Correct 14 ms 5064 KB Output is correct
35 Correct 7 ms 5124 KB Output is correct
36 Correct 11 ms 5044 KB Output is correct
37 Correct 5 ms 4996 KB Output is correct
38 Correct 4 ms 4996 KB Output is correct
39 Correct 18 ms 5016 KB Output is correct
40 Correct 25 ms 5268 KB Output is correct
41 Correct 23 ms 5064 KB Output is correct
42 Correct 20 ms 5108 KB Output is correct
43 Correct 22 ms 5040 KB Output is correct
44 Correct 14 ms 4996 KB Output is correct
45 Correct 10 ms 5072 KB Output is correct
46 Correct 3 ms 4944 KB Output is correct
47 Correct 19 ms 5120 KB Output is correct
48 Correct 17 ms 5212 KB Output is correct
49 Correct 5 ms 5004 KB Output is correct
50 Correct 51 ms 5288 KB Output is correct
51 Correct 10 ms 5116 KB Output is correct
52 Correct 3 ms 4992 KB Output is correct
53 Correct 9 ms 5116 KB Output is correct
54 Correct 20 ms 5092 KB Output is correct
55 Correct 2 ms 4992 KB Output is correct
56 Correct 43 ms 5308 KB Output is correct
57 Correct 33 ms 5192 KB Output is correct
58 Correct 33 ms 5116 KB Output is correct
59 Correct 20 ms 5088 KB Output is correct
60 Correct 23 ms 5076 KB Output is correct
61 Correct 11 ms 5120 KB Output is correct
62 Correct 4 ms 4944 KB Output is correct
63 Correct 7 ms 5072 KB Output is correct
64 Correct 7 ms 5152 KB Output is correct
65 Correct 11 ms 5128 KB Output is correct
66 Correct 10 ms 5124 KB Output is correct
67 Correct 9 ms 5076 KB Output is correct
68 Correct 6 ms 4944 KB Output is correct
69 Correct 14 ms 5120 KB Output is correct
70 Correct 12 ms 5128 KB Output is correct
71 Correct 29 ms 5312 KB Output is correct
72 Correct 10 ms 5220 KB Output is correct
73 Correct 28 ms 5212 KB Output is correct
74 Correct 33 ms 5300 KB Output is correct
75 Correct 8 ms 5152 KB Output is correct
76 Correct 31 ms 5284 KB Output is correct
77 Correct 35 ms 5284 KB Output is correct
78 Correct 13 ms 5180 KB Output is correct
79 Correct 31 ms 5236 KB Output is correct
80 Correct 30 ms 5296 KB Output is correct
81 Correct 32 ms 5300 KB Output is correct
82 Correct 39 ms 5296 KB Output is correct
83 Correct 6 ms 5216 KB Output is correct
84 Correct 26 ms 5284 KB Output is correct
85 Correct 34 ms 5228 KB Output is correct
86 Correct 39 ms 5248 KB Output is correct
87 Correct 7 ms 5136 KB Output is correct
88 Correct 28 ms 5300 KB Output is correct
89 Correct 28 ms 5272 KB Output is correct
90 Correct 11 ms 5132 KB Output is correct
91 Correct 31 ms 5268 KB Output is correct
92 Correct 38 ms 5192 KB Output is correct
93 Correct 40 ms 5228 KB Output is correct
94 Correct 23 ms 5308 KB Output is correct
95 Correct 29 ms 5252 KB Output is correct
96 Correct 35 ms 5304 KB Output is correct
97 Correct 26 ms 5264 KB Output is correct