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Submission #236545

# Submission time Handle Problem Language Result Execution time Memory
236545 2020-06-02T12:56:24 Z pit4h The Big Prize (IOI17_prize) C++14
90 / 100
 89 ms 512 KB 
#include "prize.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 2e5+1;
int total;
int n;
vector<int> vec;
int get_next(int pos) {
	int l = log2(n-1 - pos);
	int p = pos;
	auto Ask = ask(p+1);
	if(Ask[0] + Ask[1] != total) {
		return p+1;
	}
	int pref = Ask[0];
	for(int i=l; i>=0; --i) {
		if(p+(1<<i)>=n) continue;	
		auto res = ask(p + (1<<i));
		if(res[0] - pref==0 && res[0]+res[1]==total) {
			p+= (1<<i);
		}
	}
	p++;
	return p;
}
int find_best(int N) {
	n = N;
	for(int i=0; i<min(n, 500); ++i) {
		auto res = ask(i);
		total = max(total, res[0] + res[1]);
	}
	int pos = -1;
	while(true) {
		pos = get_next(pos);
		auto Ask = ask(pos);
		if(Ask[0] + Ask[1] == 0) return pos;
	}
	return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 256 KB Output is correct
2 Correct 8 ms 364 KB Output is correct
3 Correct 8 ms 256 KB Output is correct
4 Correct 10 ms 256 KB Output is correct
5 Correct 9 ms 384 KB Output is correct
6 Correct 11 ms 256 KB Output is correct
7 Correct 7 ms 376 KB Output is correct
8 Correct 9 ms 384 KB Output is correct
9 Correct 9 ms 384 KB Output is correct
10 Correct 9 ms 256 KB Output is correct

Subtask #2
70.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 384 KB Output is correct
2 Correct 9 ms 256 KB Output is correct
3 Correct 9 ms 256 KB Output is correct
4 Correct 9 ms 256 KB Output is correct
5 Correct 9 ms 256 KB Output is correct
6 Correct 9 ms 256 KB Output is correct
7 Correct 9 ms 256 KB Output is correct
8 Correct 9 ms 256 KB Output is correct
9 Correct 9 ms 384 KB Output is correct
10 Correct 9 ms 384 KB Output is correct
11 Correct 14 ms 384 KB Output is correct
12 Correct 8 ms 384 KB Output is correct
13 Correct 10 ms 376 KB Output is correct
14 Correct 13 ms 256 KB Output is correct
15 Correct 20 ms 256 KB Output is correct
16 Partially correct 63 ms 384 KB Partially correct - number of queries: 8021
17 Correct 10 ms 256 KB Output is correct
18 Partially correct 87 ms 256 KB Partially correct - number of queries: 9336
19 Correct 9 ms 256 KB Output is correct
20 Correct 23 ms 256 KB Output is correct
21 Correct 40 ms 364 KB Output is correct
22 Correct 13 ms 384 KB Output is correct
23 Correct 7 ms 376 KB Output is correct
24 Correct 9 ms 256 KB Output is correct
25 Partially correct 48 ms 256 KB Partially correct - number of queries: 5486
26 Partially correct 51 ms 256 KB Partially correct - number of queries: 5407
27 Correct 7 ms 376 KB Output is correct
28 Partially correct 65 ms 356 KB Partially correct - number of queries: 8888
29 Partially correct 59 ms 256 KB Partially correct - number of queries: 6852
30 Partially correct 76 ms 384 KB Partially correct - number of queries: 9260
31 Correct 9 ms 256 KB Output is correct
32 Correct 13 ms 256 KB Output is correct
33 Correct 6 ms 256 KB Output is correct
34 Correct 31 ms 436 KB Output is correct
35 Correct 11 ms 512 KB Output is correct
36 Correct 24 ms 368 KB Output is correct
37 Correct 9 ms 256 KB Output is correct
38 Correct 7 ms 376 KB Output is correct
39 Correct 38 ms 256 KB Output is correct
40 Partially correct 66 ms 256 KB Partially correct - number of queries: 7988
41 Partially correct 33 ms 376 KB Partially correct - number of queries: 5774
42 Partially correct 45 ms 256 KB Partially correct - number of queries: 5774
43 Partially correct 39 ms 256 KB Partially correct - number of queries: 5256
44 Correct 35 ms 384 KB Output is correct
45 Correct 39 ms 384 KB Output is correct
46 Correct 7 ms 384 KB Output is correct
47 Correct 44 ms 256 KB Output is correct
48 Partially correct 60 ms 384 KB Partially correct - number of queries: 7031
49 Correct 13 ms 256 KB Output is correct
50 Partially correct 79 ms 256 KB Partially correct - number of queries: 9336
51 Correct 37 ms 256 KB Output is correct
52 Correct 8 ms 256 KB Output is correct
53 Correct 13 ms 384 KB Output is correct
54 Correct 33 ms 376 KB Output is correct
55 Correct 8 ms 256 KB Output is correct
56 Partially correct 77 ms 384 KB Partially correct - number of queries: 9336
57 Partially correct 59 ms 384 KB Partially correct - number of queries: 6938
58 Partially correct 57 ms 384 KB Partially correct - number of queries: 7050
59 Partially correct 55 ms 384 KB Partially correct - number of queries: 5774
60 Partially correct 42 ms 256 KB Partially correct - number of queries: 5393
61 Correct 10 ms 256 KB Output is correct
62 Correct 10 ms 256 KB Output is correct
63 Correct 10 ms 256 KB Output is correct
64 Correct 10 ms 256 KB Output is correct
65 Correct 9 ms 256 KB Output is correct
66 Correct 11 ms 376 KB Output is correct
67 Correct 9 ms 256 KB Output is correct
68 Correct 22 ms 256 KB Output is correct
69 Correct 16 ms 256 KB Output is correct
70 Correct 12 ms 256 KB Output is correct
71 Partially correct 71 ms 256 KB Partially correct - number of queries: 9320
72 Correct 14 ms 384 KB Output is correct
73 Partially correct 71 ms 256 KB Partially correct - number of queries: 9187
74 Partially correct 88 ms 256 KB Partially correct - number of queries: 9241
75 Correct 10 ms 256 KB Output is correct
76 Partially correct 69 ms 256 KB Partially correct - number of queries: 7986
77 Partially correct 89 ms 256 KB Partially correct - number of queries: 9336
78 Correct 15 ms 256 KB Output is correct
79 Correct 39 ms 384 KB Output is correct
80 Partially correct 85 ms 256 KB Partially correct - number of queries: 9330
81 Partially correct 78 ms 384 KB Partially correct - number of queries: 9316
82 Partially correct 73 ms 256 KB Partially correct - number of queries: 9243
83 Correct 9 ms 256 KB Output is correct
84 Partially correct 67 ms 384 KB Partially correct - number of queries: 7693
85 Partially correct 78 ms 256 KB Partially correct - number of queries: 9344
86 Correct 13 ms 256 KB Output is correct
87 Correct 10 ms 256 KB Output is correct
88 Correct 15 ms 256 KB Output is correct
89 Correct 17 ms 256 KB Output is correct
90 Correct 9 ms 256 KB Output is correct
91 Correct 14 ms 384 KB Output is correct
92 Correct 16 ms 256 KB Output is correct
93 Correct 19 ms 256 KB Output is correct
94 Correct 20 ms 256 KB Output is correct
95 Correct 22 ms 256 KB Output is correct
96 Correct 13 ms 256 KB Output is correct
97 Correct 17 ms 256 KB Output is correct