#include "prize.h"
#include <algorithm>
using namespace std;
typedef pair<int, int> pi;
//1 + 4 + 21 + 446 = 472
const int MAXDIA = 473;
int n, m, g, r;
pi save[200000];
pi question(int i) {
if (save[i] != pi(0, 0)) return save[i];
vector<int> ret = ask(i);
if (ret[0] == 0 && ret[1] == 0) throw i;
return save[i] = pi(ret[0], ret[1]);
}
void bsearch(int s, int e, int lc, int rc, int c) {
if (c == 0) return;
if (c == e - s + 1) {
for (int i = s; i <= e; ++i) question(i);
return;
}
int md = (s + e) / 2;
int l = md + 1, r = md, p;
for (int i = 0; i <= e - s; ++i) {
if (i % 2 == 0) p = --l;
else p = ++r;
pi ret = question(p);
int ls = ret.first - lc - (i % 2 == 0 ? 0 : r - l);
if (ret.first + ret.second == m) {
bsearch(s, l - 1, lc, rc + c - ls, ls);
bsearch(r + 1, e, lc + ls + r - l, rc, c - ls - r + l);
break;
}
}
}
int find_best(int N) {
n = N;
if (n < MAXDIA) {
for (int i = 0; i < n; ++i) {
vector<int> ret = ask(i);
if (ret[0] == 0 && ret[1] == 0) return i;
}
}
g = n / MAXDIA;
r = n - MAXDIA * g;
try {
int i, s, e;
for (i = 0, s = 0; i < MAXDIA; ++i) {
if (i < r) e = s + g;
else e = s + g - 1;
pi ret = question(e);
m = max(m, ret.first + ret.second);
s = e + 1;
}
int lc = 0;
for (i = 0, s = 0; i < MAXDIA; ++i) {
if (i < r) e = s + g;
else e = s + g - 1;
pi ret = question(e);
int j = e;
int ct = 0;
while (s < j && ret.first + ret.second != m) {
ret = question(--j);
}
bsearch(s, j - 1, lc, ret.second, ret.first - lc);
lc = e - j + ret.first;
s = e + 1;
}
}
catch (int i) {
return i;
}
return 0;
}
Compilation message
prize.cpp: In function 'int find_best(int)':
prize.cpp:66:8: warning: unused variable 'ct' [-Wunused-variable]
int ct = 0;
^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 2 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 3 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 4 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 5 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 6 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 7 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 8 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 9 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 10 |
Correct |
3 ms |
3724 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 2 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 3 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 4 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 5 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 6 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 7 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 8 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 9 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 10 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 11 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 12 |
Correct |
13 ms |
3724 KB |
Output is correct |
| 13 |
Correct |
9 ms |
3724 KB |
Output is correct |
| 14 |
Correct |
9 ms |
3724 KB |
Output is correct |
| 15 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 16 |
Correct |
16 ms |
3724 KB |
Output is correct |
| 17 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 18 |
Correct |
29 ms |
3724 KB |
Output is correct |
| 19 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 20 |
Correct |
9 ms |
3724 KB |
Output is correct |
| 21 |
Correct |
9 ms |
3724 KB |
Output is correct |
| 22 |
Correct |
9 ms |
3724 KB |
Output is correct |
| 23 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 24 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 25 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 26 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 27 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 28 |
Correct |
19 ms |
3724 KB |
Output is correct |
| 29 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 30 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 31 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 32 |
Correct |
13 ms |
3724 KB |
Output is correct |
| 33 |
Correct |
0 ms |
3580 KB |
Output is correct |
| 34 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 35 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 36 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 37 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 38 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 39 |
Correct |
16 ms |
3724 KB |
Output is correct |
| 40 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 41 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 42 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 43 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 44 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 45 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 46 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 47 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 48 |
Correct |
13 ms |
3724 KB |
Output is correct |
| 49 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 50 |
Correct |
16 ms |
3724 KB |
Output is correct |
| 51 |
Correct |
13 ms |
3724 KB |
Output is correct |
| 52 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 53 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 54 |
Correct |
16 ms |
3724 KB |
Output is correct |
| 55 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 56 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 57 |
Correct |
16 ms |
3724 KB |
Output is correct |
| 58 |
Correct |
16 ms |
3724 KB |
Output is correct |
| 59 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 60 |
Correct |
9 ms |
3724 KB |
Output is correct |
| 61 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 62 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 63 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 64 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 65 |
Correct |
9 ms |
3724 KB |
Output is correct |
| 66 |
Correct |
9 ms |
3724 KB |
Output is correct |
| 67 |
Correct |
9 ms |
3724 KB |
Output is correct |
| 68 |
Correct |
13 ms |
3724 KB |
Output is correct |
| 69 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 70 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 71 |
Correct |
29 ms |
3724 KB |
Output is correct |
| 72 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 73 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 74 |
Correct |
16 ms |
3724 KB |
Output is correct |
| 75 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 76 |
Correct |
13 ms |
3724 KB |
Output is correct |
| 77 |
Correct |
16 ms |
3724 KB |
Output is correct |
| 78 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 79 |
Correct |
13 ms |
3724 KB |
Output is correct |
| 80 |
Correct |
33 ms |
3724 KB |
Output is correct |
| 81 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 82 |
Correct |
13 ms |
3724 KB |
Output is correct |
| 83 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 84 |
Correct |
13 ms |
3724 KB |
Output is correct |
| 85 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 86 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 87 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 88 |
Correct |
9 ms |
3724 KB |
Output is correct |
| 89 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 90 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 91 |
Correct |
0 ms |
3724 KB |
Output is correct |
| 92 |
Correct |
3 ms |
3724 KB |
Output is correct |
| 93 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 94 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 95 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 96 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 97 |
Correct |
6 ms |
3724 KB |
Output is correct |
