oj.uz

Submission #566473

# Submission time Handle Problem Language Result Execution time Memory
566473 2022-05-22T10:45:15 Z lorenzoferrari The Big Prize (IOI17_prize) C++17
100 / 100
 59 ms 624 KB 
// 100/100
#include <bits/stdc++.h>
#include "prize.h"
using namespace std;

int answer = -1;
map<int, array<int, 2>> memo;

array<int, 2> askme(int i) {
  array<int, 2> ans;
  if (memo.find(i) != memo.end()) {
    ans[0] = memo[i][0];
    ans[1] = memo[i][1];
  } else {
    auto v = ask(i);
    ans[0] = v[0];
    ans[1] = v[1];
  }
  memo[i] = {ans[0], ans[1]};
  if (ans[0] + ans[1] == 0) answer = i;
  return ans;
}
int count(int i) { return askme(i)[0] + askme(i)[1]; }

void findall(int l, int r) {
  while (l < r && count(l) != count(r)) {
    if (answer != -1) return;
    if (count(l) > count(r)) {
      --r;
    } else {
      ++l;
    }
  }
  if (l >= r) return;
  int cnt = askme(r)[0] - askme(l)[0];
  if (cnt <= 0) return;
  if (answer != -1) return;
  int m = (l + r) / 2;
  findall(l, m);
  findall(m, r);
}

int find_best(int n) {
  findall(0, n-1);
  return answer;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 1 ms 292 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 292 KB Output is correct
7 Correct 1 ms 292 KB Output is correct
8 Correct 1 ms 276 KB Output is correct
9 Correct 1 ms 208 KB Output is correct
10 Correct 1 ms 208 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 1 ms 276 KB Output is correct
3 Correct 1 ms 284 KB Output is correct
4 Correct 1 ms 292 KB Output is correct
5 Correct 1 ms 292 KB Output is correct
6 Correct 1 ms 284 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 1 ms 288 KB Output is correct
9 Correct 0 ms 208 KB Output is correct
10 Correct 1 ms 208 KB Output is correct
11 Correct 2 ms 284 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 6 ms 400 KB Output is correct
14 Correct 3 ms 208 KB Output is correct
15 Correct 8 ms 288 KB Output is correct
16 Correct 38 ms 412 KB Output is correct
17 Correct 1 ms 208 KB Output is correct
18 Correct 49 ms 508 KB Output is correct
19 Correct 1 ms 208 KB Output is correct
20 Correct 9 ms 360 KB Output is correct
21 Correct 18 ms 292 KB Output is correct
22 Correct 3 ms 320 KB Output is correct
23 Correct 1 ms 208 KB Output is correct
24 Correct 1 ms 208 KB Output is correct
25 Correct 24 ms 408 KB Output is correct
26 Correct 13 ms 424 KB Output is correct
27 Correct 1 ms 288 KB Output is correct
28 Correct 24 ms 496 KB Output is correct
29 Correct 37 ms 456 KB Output is correct
30 Correct 53 ms 448 KB Output is correct
31 Correct 1 ms 208 KB Output is correct
32 Correct 4 ms 284 KB Output is correct
33 Correct 0 ms 208 KB Output is correct
34 Correct 14 ms 352 KB Output is correct
35 Correct 2 ms 432 KB Output is correct
36 Correct 13 ms 284 KB Output is correct
37 Correct 2 ms 288 KB Output is correct
38 Correct 1 ms 296 KB Output is correct
39 Correct 12 ms 384 KB Output is correct
40 Correct 39 ms 520 KB Output is correct
41 Correct 27 ms 428 KB Output is correct
42 Correct 26 ms 336 KB Output is correct
43 Correct 24 ms 420 KB Output is correct
44 Correct 21 ms 280 KB Output is correct
45 Correct 8 ms 348 KB Output is correct
46 Correct 1 ms 208 KB Output is correct
47 Correct 26 ms 444 KB Output is correct
48 Correct 33 ms 576 KB Output is correct
49 Correct 3 ms 304 KB Output is correct
50 Correct 43 ms 452 KB Output is correct
51 Correct 19 ms 304 KB Output is correct
52 Correct 1 ms 292 KB Output is correct
53 Correct 2 ms 296 KB Output is correct
54 Correct 19 ms 376 KB Output is correct
55 Correct 1 ms 288 KB Output is correct
56 Correct 48 ms 624 KB Output is correct
57 Correct 35 ms 412 KB Output is correct
58 Correct 33 ms 596 KB Output is correct
59 Correct 24 ms 408 KB Output is correct
60 Correct 25 ms 420 KB Output is correct
61 Correct 2 ms 284 KB Output is correct
62 Correct 1 ms 208 KB Output is correct
63 Correct 1 ms 288 KB Output is correct
64 Correct 1 ms 292 KB Output is correct
65 Correct 1 ms 272 KB Output is correct
66 Correct 1 ms 288 KB Output is correct
67 Correct 5 ms 288 KB Output is correct
68 Correct 3 ms 320 KB Output is correct
69 Correct 1 ms 208 KB Output is correct
70 Correct 4 ms 284 KB Output is correct
71 Correct 59 ms 564 KB Output is correct
72 Correct 5 ms 208 KB Output is correct
73 Correct 46 ms 552 KB Output is correct
74 Correct 55 ms 540 KB Output is correct
75 Correct 2 ms 208 KB Output is correct
76 Correct 41 ms 472 KB Output is correct
77 Correct 48 ms 472 KB Output is correct
78 Correct 5 ms 208 KB Output is correct
79 Correct 22 ms 336 KB Output is correct
80 Correct 49 ms 560 KB Output is correct
81 Correct 47 ms 500 KB Output is correct
82 Correct 38 ms 512 KB Output is correct
83 Correct 2 ms 208 KB Output is correct
84 Correct 34 ms 456 KB Output is correct
85 Correct 48 ms 512 KB Output is correct
86 Correct 2 ms 300 KB Output is correct
87 Correct 2 ms 208 KB Output is correct
88 Correct 3 ms 208 KB Output is correct
89 Correct 4 ms 304 KB Output is correct
90 Correct 1 ms 208 KB Output is correct
91 Correct 1 ms 208 KB Output is correct
92 Correct 1 ms 208 KB Output is correct
93 Correct 4 ms 208 KB Output is correct
94 Correct 6 ms 208 KB Output is correct
95 Correct 5 ms 208 KB Output is correct
96 Correct 5 ms 208 KB Output is correct
97 Correct 1 ms 208 KB Output is correct