#include <iostream>
#include <vector>
#include <algorithm>
#include <queue>
#include <utility>
#include <set>
#include <cmath>
#include <cstring>
#include "prize.h"
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef pair<ll, ll> ii;
vi mem[(int)2e5 + 1];
bool done[(int)2e5 + 1];
vi pitaj(int idx){
if (done[idx])
return mem[idx];
done[idx] = true;
return mem[idx] = ask(idx);
}
int smanji(int x, int y, int t, int maxi){
while(t*y >= t*x){
vi r = pitaj(y);
if (r[0] + r[1] == 0)
return -(y + 1);
if (r[0] + r[1] == maxi)
break;
y += -t;
}
return y;
}
int bin_search(int lijevo, int beg, int end, int maxi){
if (beg > end)
return -1;
int l = beg, r = end;
vi t;
while(l < r){
int mid = (l + r)/2;
t = pitaj(mid);
if (t[0] + t[1] == 0)
return mid;
if (t[0] + t[1] == maxi){
if (lijevo - t[1])
r = mid - 1;
else
l = mid + 1;
}
else
r = mid;
}
l = smanji(end, l, -1, maxi);
if (l < 0)
return - l - 1;
if (mem[l][1] - mem[end + 1][1])
return bin_search(mem[l][1], l + 1, end, maxi);
return -1;
}
int find_best(int n){
memset(done, false, sizeof done);
int maxi = -1;
int grupa = 460, br = n/460;
int curr = 0;
vi idx;
for (int i = 0; i < grupa; i++){
vi res = pitaj(curr);
maxi = max(maxi, res[0] + res[1]);
if (res[0] + res[1] == 0)
return curr;
idx.push_back(curr);
curr += br;
if (i < (n%460))
curr++;
}
done[n] = true; mem[n] = {maxi, 0}; idx.push_back(n);
vi r;
for (int i = 0; i < idx.size() - 1; i++){
int x = idx[i], y = idx[i + 1];
int res = -1;
x = smanji(y, x, -1, maxi); y = smanji(x, y, 1, maxi);
if (x < 0)
return - x - 1;
if (y < 0)
return - y - 1;
if (mem[x][1] - mem[y][1])
res = bin_search(mem[x][1], x + 1, y - 1, maxi);
if (res != -1)
return res;
}
}
Compilation message
prize.cpp: In function 'int find_best(int)':
prize.cpp:87:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < idx.size() - 1; i++){
~~^~~~~~~~~~~~~~~~
prize.cpp:100:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
12 ms |
5240 KB |
Output is correct |
2 |
Correct |
16 ms |
5188 KB |
Output is correct |
3 |
Correct |
11 ms |
5240 KB |
Output is correct |
4 |
Correct |
17 ms |
5248 KB |
Output is correct |
5 |
Correct |
10 ms |
5284 KB |
Output is correct |
6 |
Correct |
7 ms |
5248 KB |
Output is correct |
7 |
Correct |
12 ms |
5248 KB |
Output is correct |
8 |
Correct |
10 ms |
5248 KB |
Output is correct |
9 |
Correct |
13 ms |
5248 KB |
Output is correct |
10 |
Correct |
12 ms |
5248 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
13 ms |
5248 KB |
Output is correct |
2 |
Correct |
13 ms |
5248 KB |
Output is correct |
3 |
Correct |
14 ms |
5248 KB |
Output is correct |
4 |
Correct |
11 ms |
5240 KB |
Output is correct |
5 |
Correct |
12 ms |
5248 KB |
Output is correct |
6 |
Correct |
8 ms |
5248 KB |
Output is correct |
7 |
Correct |
12 ms |
5248 KB |
Output is correct |
8 |
Correct |
11 ms |
5248 KB |
Output is correct |
9 |
Correct |
10 ms |
5248 KB |
Output is correct |
10 |
Correct |
14 ms |
5248 KB |
Output is correct |
11 |
Correct |
13 ms |
5248 KB |
Output is correct |
12 |
Correct |
13 ms |
5248 KB |
Output is correct |
13 |
Correct |
14 ms |
5244 KB |
Output is correct |
14 |
Correct |
15 ms |
5248 KB |
Output is correct |
15 |
Correct |
13 ms |
5332 KB |
Output is correct |
16 |
Correct |
53 ms |
5368 KB |
Output is correct |
17 |
Correct |
10 ms |
5324 KB |
Output is correct |
18 |
Correct |
64 ms |
5372 KB |
Output is correct |
19 |
Correct |
10 ms |
5272 KB |
Output is correct |
20 |
Correct |
23 ms |
5248 KB |
Output is correct |
21 |
Correct |
30 ms |
5248 KB |
Output is correct |
22 |
Correct |
17 ms |
5248 KB |
Output is correct |
23 |
Correct |
14 ms |
5248 KB |
Output is correct |
24 |
Correct |
12 ms |
5240 KB |
Output is correct |
25 |
Correct |
33 ms |
5248 KB |
Output is correct |
26 |
Correct |
31 ms |
5248 KB |
Output is correct |
27 |
Correct |
10 ms |
5324 KB |
Output is correct |
28 |
Correct |
37 ms |
5392 KB |
Output is correct |
29 |
Correct |
36 ms |
5240 KB |
Output is correct |
30 |
Correct |
12 ms |
5248 KB |
Output is correct |
31 |
Correct |
10 ms |
5324 KB |
Output is correct |
32 |
Correct |
15 ms |
5248 KB |
Output is correct |
33 |
Correct |
7 ms |
5248 KB |
Output is correct |
34 |
Correct |
30 ms |
5248 KB |
Output is correct |
35 |
Correct |
14 ms |
5248 KB |
Output is correct |
36 |
Correct |
23 ms |
5376 KB |
Output is correct |
37 |
Correct |
16 ms |
5248 KB |
Output is correct |
38 |
Correct |
15 ms |
5244 KB |
Output is correct |
39 |
Correct |
34 ms |
5392 KB |
Output is correct |
40 |
Correct |
38 ms |
5496 KB |
Output is correct |
41 |
Correct |
31 ms |
5248 KB |
Output is correct |
42 |
Correct |
22 ms |
5400 KB |
Output is correct |
43 |
Correct |
44 ms |
5344 KB |
Output is correct |
44 |
Correct |
38 ms |
5248 KB |
Output is correct |
45 |
Correct |
31 ms |
5240 KB |
Output is correct |
46 |
Correct |
14 ms |
5248 KB |
Output is correct |
47 |
Correct |
40 ms |
5296 KB |
Output is correct |
48 |
Correct |
35 ms |
5368 KB |
Output is correct |
49 |
Correct |
16 ms |
5248 KB |
Output is correct |
50 |
Correct |
61 ms |
5368 KB |
Output is correct |
51 |
Correct |
31 ms |
5248 KB |
Output is correct |
52 |
Correct |
12 ms |
5248 KB |
Output is correct |
53 |
Correct |
12 ms |
5248 KB |
Output is correct |
54 |
Correct |
33 ms |
5248 KB |
Output is correct |
55 |
Correct |
11 ms |
5248 KB |
Output is correct |
56 |
Correct |
45 ms |
5404 KB |
Output is correct |
57 |
Correct |
54 ms |
5368 KB |
Output is correct |
58 |
Correct |
39 ms |
5240 KB |
Output is correct |
59 |
Correct |
22 ms |
5380 KB |
Output is correct |
60 |
Correct |
30 ms |
5304 KB |
Output is correct |
61 |
Correct |
13 ms |
5368 KB |
Output is correct |
62 |
Correct |
14 ms |
5244 KB |
Output is correct |
63 |
Correct |
12 ms |
5248 KB |
Output is correct |
64 |
Correct |
13 ms |
5268 KB |
Output is correct |
65 |
Correct |
13 ms |
5248 KB |
Output is correct |
66 |
Correct |
20 ms |
5248 KB |
Output is correct |
67 |
Correct |
13 ms |
5248 KB |
Output is correct |
68 |
Runtime error |
21 ms |
10436 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
69 |
Halted |
0 ms |
0 KB |
- |