/*
-http://ioi2017.org/tasks/editorial/prize.pdf , https://github.com/timpostuvan/CompetitiveProgramming/blob/master/Olympiad/IOI/Prize2017.cpp
*/
#include <bits/stdc++.h>
#include "prize.h"
using namespace std;
const int N=2e5+5;
map<int,vector<int> > mapa[N];
int sol=-1;
void solve(int l,int r)
{
if(sol!=-1||l>r)
return;
int m=(l+r)>>1;
vector<int> cur=ask(m);
int sum=cur[0]+cur[1];
if(sum==0)
{
sol=m;
return;
}
int left=1,right=1;
auto it=mapa[sum].upper_bound(m);
if(it!=mapa[sum].end())
{
if((*it).second[0]==cur[0])
right=0;
}
if(it!=mapa[sum].end())
{
if((*it).second[0]==cur[0])
right=0;
}
if(it!=mapa[sum].begin())
it--;
if(it!=mapa[sum].begin())
{
if((*it).second[1]==cur[1])
left=0;
}
mapa[sum][m]=cur;
if(left)
solve(l,m-1);
if(right)
solve(m+1,r);
}
int find_best(int n) {
solve(0,n-1);
return sol;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
11 ms |
9856 KB |
Output is correct |
2 |
Correct |
12 ms |
9856 KB |
Output is correct |
3 |
Correct |
12 ms |
9908 KB |
Output is correct |
4 |
Correct |
11 ms |
9908 KB |
Output is correct |
5 |
Correct |
12 ms |
9908 KB |
Output is correct |
6 |
Correct |
10 ms |
9908 KB |
Output is correct |
7 |
Correct |
10 ms |
9908 KB |
Output is correct |
8 |
Correct |
10 ms |
9972 KB |
Output is correct |
9 |
Correct |
10 ms |
9972 KB |
Output is correct |
10 |
Correct |
9 ms |
9972 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
10 ms |
9972 KB |
Output is correct |
2 |
Correct |
11 ms |
10048 KB |
Output is correct |
3 |
Correct |
12 ms |
10048 KB |
Output is correct |
4 |
Correct |
11 ms |
10048 KB |
Output is correct |
5 |
Correct |
11 ms |
10048 KB |
Output is correct |
6 |
Correct |
12 ms |
10048 KB |
Output is correct |
7 |
Correct |
10 ms |
10048 KB |
Output is correct |
8 |
Correct |
12 ms |
10048 KB |
Output is correct |
9 |
Correct |
11 ms |
10048 KB |
Output is correct |
10 |
Correct |
11 ms |
10048 KB |
Output is correct |
11 |
Correct |
13 ms |
10048 KB |
Output is correct |
12 |
Correct |
11 ms |
10048 KB |
Output is correct |
13 |
Correct |
17 ms |
10048 KB |
Output is correct |
14 |
Correct |
14 ms |
10048 KB |
Output is correct |
15 |
Correct |
18 ms |
10048 KB |
Output is correct |
16 |
Correct |
52 ms |
10356 KB |
Output is correct |
17 |
Correct |
11 ms |
10356 KB |
Output is correct |
18 |
Correct |
58 ms |
10428 KB |
Output is correct |
19 |
Correct |
12 ms |
10428 KB |
Output is correct |
20 |
Correct |
17 ms |
10428 KB |
Output is correct |
21 |
Correct |
29 ms |
10428 KB |
Output is correct |
22 |
Correct |
14 ms |
10428 KB |
Output is correct |
23 |
Correct |
10 ms |
10428 KB |
Output is correct |
24 |
Correct |
10 ms |
10428 KB |
Output is correct |
25 |
Correct |
17 ms |
10428 KB |
Output is correct |
26 |
Correct |
24 ms |
10428 KB |
Output is correct |
27 |
Correct |
23 ms |
10428 KB |
Output is correct |
28 |
Correct |
51 ms |
10428 KB |
Output is correct |
29 |
Correct |
50 ms |
10428 KB |
Output is correct |
30 |
Correct |
32 ms |
10548 KB |
Output is correct |
31 |
Correct |
10 ms |
10548 KB |
Output is correct |
32 |
Correct |
14 ms |
10548 KB |
Output is correct |
33 |
Correct |
9 ms |
10548 KB |
Output is correct |
34 |
Correct |
25 ms |
10548 KB |
Output is correct |
35 |
Correct |
13 ms |
10548 KB |
Output is correct |
36 |
Correct |
20 ms |
10548 KB |
Output is correct |
37 |
Correct |
12 ms |
10548 KB |
Output is correct |
38 |
Correct |
11 ms |
10548 KB |
Output is correct |
39 |
Correct |
22 ms |
10548 KB |
Output is correct |
40 |
Correct |
31 ms |
10548 KB |
Output is correct |
41 |
Correct |
41 ms |
10548 KB |
Output is correct |
42 |
Correct |
40 ms |
10548 KB |
Output is correct |
43 |
Correct |
22 ms |
10548 KB |
Output is correct |
44 |
Correct |
30 ms |
10548 KB |
Output is correct |
45 |
Correct |
24 ms |
10548 KB |
Output is correct |
46 |
Correct |
11 ms |
10548 KB |
Output is correct |
47 |
Correct |
31 ms |
10548 KB |
Output is correct |
48 |
Correct |
45 ms |
10548 KB |
Output is correct |
49 |
Correct |
15 ms |
10548 KB |
Output is correct |
50 |
Correct |
59 ms |
10548 KB |
Output is correct |
51 |
Correct |
25 ms |
10548 KB |
Output is correct |
52 |
Correct |
11 ms |
10548 KB |
Output is correct |
53 |
Correct |
12 ms |
10548 KB |
Output is correct |
54 |
Correct |
33 ms |
10548 KB |
Output is correct |
55 |
Correct |
11 ms |
10548 KB |
Output is correct |
56 |
Correct |
59 ms |
10548 KB |
Output is correct |
57 |
Correct |
49 ms |
10548 KB |
Output is correct |
58 |
Correct |
50 ms |
10548 KB |
Output is correct |
59 |
Correct |
37 ms |
10548 KB |
Output is correct |
60 |
Correct |
35 ms |
10548 KB |
Output is correct |
61 |
Correct |
13 ms |
10548 KB |
Output is correct |
62 |
Correct |
12 ms |
10548 KB |
Output is correct |
63 |
Correct |
13 ms |
10548 KB |
Output is correct |
64 |
Correct |
13 ms |
10548 KB |
Output is correct |
65 |
Correct |
12 ms |
10548 KB |
Output is correct |
66 |
Correct |
12 ms |
10548 KB |
Output is correct |
67 |
Correct |
12 ms |
10548 KB |
Output is correct |
68 |
Correct |
11 ms |
10548 KB |
Output is correct |
69 |
Correct |
12 ms |
10548 KB |
Output is correct |
70 |
Correct |
10 ms |
10548 KB |
Output is correct |
71 |
Correct |
55 ms |
10548 KB |
Output is correct |
72 |
Correct |
16 ms |
10548 KB |
Output is correct |
73 |
Correct |
58 ms |
10548 KB |
Output is correct |
74 |
Correct |
56 ms |
10548 KB |
Output is correct |
75 |
Correct |
11 ms |
10548 KB |
Output is correct |
76 |
Correct |
39 ms |
10548 KB |
Output is correct |
77 |
Correct |
91 ms |
10548 KB |
Output is correct |
78 |
Correct |
14 ms |
10548 KB |
Output is correct |
79 |
Correct |
39 ms |
10548 KB |
Output is correct |
80 |
Correct |
58 ms |
10556 KB |
Output is correct |
81 |
Correct |
59 ms |
10556 KB |
Output is correct |
82 |
Correct |
56 ms |
10556 KB |
Output is correct |
83 |
Correct |
10 ms |
10556 KB |
Output is correct |
84 |
Correct |
50 ms |
10556 KB |
Output is correct |
85 |
Correct |
56 ms |
10556 KB |
Output is correct |
86 |
Correct |
17 ms |
10556 KB |
Output is correct |
87 |
Correct |
13 ms |
10556 KB |
Output is correct |
88 |
Correct |
16 ms |
10556 KB |
Output is correct |
89 |
Correct |
12 ms |
10556 KB |
Output is correct |
90 |
Correct |
41 ms |
10556 KB |
Output is correct |
91 |
Correct |
11 ms |
10556 KB |
Output is correct |
92 |
Correct |
10 ms |
10556 KB |
Output is correct |
93 |
Correct |
12 ms |
10556 KB |
Output is correct |
94 |
Correct |
14 ms |
10556 KB |
Output is correct |
95 |
Correct |
16 ms |
10556 KB |
Output is correct |
96 |
Correct |
15 ms |
10556 KB |
Output is correct |
97 |
Correct |
9 ms |
10556 KB |
Output is correct |