#include <bits/stdc++.h>
#include "prize.h"
using namespace std;
#define mp make_pair
#define pb push_back
const int INF = 1000000000;
typedef long long ll;
typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<vi> vvi;
typedef long double num;
typedef pair<num, num> nn;
typedef vector<nn> vnn;
typedef vector<num> vn;
typedef vector<vn> vvn;
vii answers;
int maxVal = 0;
int N;
ii query(int i){
if(answers[i] != mp(-1, -1)) return answers[i];
vi a = ask(i);
//cerr << a[0] << " " << a[1] << endl;
return answers[i] = mp(a[0], a[1]);
}
void genQueries(){
// do 711 queries in the shape of a bs
queue<ii> bounds;
bounds.push(mp(-1, N));
int queriesLeft = 711;
while(queriesLeft --){
ii q = bounds.front(); bounds.pop();
int mb = (q.first+q.second)/2;
query(mb);
maxVal = max(maxVal, answers[mb].first + answers[mb].second);
bounds.push(mp(q.first, mb));
bounds.push(mp(mb, q.second));
}
}
int find_best(int n){
N = n;
answers.assign(n, mp(-1, -1));
genQueries();
int betterFound = 0;
int lb = -1;
int lastLb = -1;
while(betterFound < maxVal){
int rb = n;
int lb = -1;
while(lb + 1 != rb){
int mb = (lb + rb)/2;
ii ans = query(mb);
if(ans.second >= maxVal - betterFound or mb <= lastLb){
lb = mb;
} else {
rb = mb;
}
}
//cerr << rb << endl;
betterFound++;
lb++;
lastLb = lb;
}
for(int i = 0; i < answers.size(); i++){
if(answers[i] == mp(0, 0)) return i;
}
}
Compilation message
prize.cpp: In function 'int find_best(int)':
prize.cpp:73:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i = 0; i < answers.size(); i++){
~~^~~~~~~~~~~~~~~~
prize.cpp:52:9: warning: unused variable 'lb' [-Wunused-variable]
int lb = -1;
^~
prize.cpp:77:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
11 ms |
1828 KB |
Output is correct |
| 2 |
Correct |
9 ms |
1884 KB |
Output is correct |
| 3 |
Correct |
12 ms |
1884 KB |
Output is correct |
| 4 |
Correct |
12 ms |
1900 KB |
Output is correct |
| 5 |
Correct |
7 ms |
2068 KB |
Output is correct |
| 6 |
Correct |
11 ms |
2068 KB |
Output is correct |
| 7 |
Correct |
7 ms |
2104 KB |
Output is correct |
| 8 |
Correct |
12 ms |
2176 KB |
Output is correct |
| 9 |
Correct |
6 ms |
2176 KB |
Output is correct |
| 10 |
Correct |
9 ms |
2228 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
10 ms |
2228 KB |
Output is correct |
| 2 |
Correct |
10 ms |
2228 KB |
Output is correct |
| 3 |
Correct |
10 ms |
2228 KB |
Output is correct |
| 4 |
Correct |
6 ms |
2228 KB |
Output is correct |
| 5 |
Correct |
8 ms |
2228 KB |
Output is correct |
| 6 |
Correct |
5 ms |
2228 KB |
Output is correct |
| 7 |
Correct |
7 ms |
2228 KB |
Output is correct |
| 8 |
Correct |
7 ms |
2228 KB |
Output is correct |
| 9 |
Correct |
12 ms |
2228 KB |
Output is correct |
| 10 |
Correct |
10 ms |
2228 KB |
Output is correct |
| 11 |
Correct |
10 ms |
2228 KB |
Output is correct |
| 12 |
Correct |
14 ms |
2228 KB |
Output is correct |
| 13 |
Correct |
14 ms |
2228 KB |
Output is correct |
| 14 |
Correct |
18 ms |
2228 KB |
Output is correct |
| 15 |
Correct |
39 ms |
2228 KB |
Output is correct |
| 16 |
Correct |
41 ms |
2228 KB |
Output is correct |
| 17 |
Correct |
44 ms |
2228 KB |
Output is correct |
| 18 |
Correct |
47 ms |
2228 KB |
Output is correct |
| 19 |
Correct |
40 ms |
2228 KB |
Output is correct |
| 20 |
Correct |
29 ms |
2228 KB |
Output is correct |
| 21 |
Correct |
55 ms |
2228 KB |
Output is correct |
| 22 |
Correct |
41 ms |
2228 KB |
Output is correct |
| 23 |
Correct |
12 ms |
2228 KB |
Output is correct |
| 24 |
Correct |
15 ms |
2228 KB |
Output is correct |
| 25 |
Correct |
46 ms |
2228 KB |
Output is correct |
| 26 |
Correct |
21 ms |
2228 KB |
Output is correct |
| 27 |
Correct |
10 ms |
2228 KB |
Output is correct |
| 28 |
Correct |
20 ms |
2228 KB |
Output is correct |
| 29 |
Correct |
50 ms |
2228 KB |
Output is correct |
| 30 |
Correct |
21 ms |
2228 KB |
Output is correct |
| 31 |
Correct |
42 ms |
2228 KB |
Output is correct |
| 32 |
Correct |
14 ms |
2228 KB |
Output is correct |
| 33 |
Correct |
2 ms |
2228 KB |
Output is correct |
| 34 |
Correct |
25 ms |
2228 KB |
Output is correct |
| 35 |
Correct |
9 ms |
2228 KB |
Output is correct |
| 36 |
Correct |
48 ms |
2228 KB |
Output is correct |
| 37 |
Correct |
13 ms |
2228 KB |
Output is correct |
| 38 |
Correct |
6 ms |
2228 KB |
Output is correct |
| 39 |
Correct |
40 ms |
2228 KB |
Output is correct |
| 40 |
Correct |
19 ms |
2228 KB |
Output is correct |
| 41 |
Correct |
51 ms |
2236 KB |
Output is correct |
| 42 |
Correct |
47 ms |
2236 KB |
Output is correct |
| 43 |
Correct |
38 ms |
2236 KB |
Output is correct |
| 44 |
Correct |
45 ms |
2236 KB |
Output is correct |
| 45 |
Correct |
37 ms |
2236 KB |
Output is correct |
| 46 |
Correct |
35 ms |
2236 KB |
Output is correct |
| 47 |
Correct |
41 ms |
2236 KB |
Output is correct |
| 48 |
Correct |
35 ms |
2236 KB |
Output is correct |
| 49 |
Correct |
43 ms |
2236 KB |
Output is correct |
| 50 |
Correct |
20 ms |
2236 KB |
Output is correct |
| 51 |
Correct |
34 ms |
2236 KB |
Output is correct |
| 52 |
Correct |
52 ms |
2236 KB |
Output is correct |
| 53 |
Correct |
11 ms |
2236 KB |
Output is correct |
| 54 |
Correct |
28 ms |
2236 KB |
Output is correct |
| 55 |
Correct |
20 ms |
2236 KB |
Output is correct |
| 56 |
Correct |
46 ms |
2236 KB |
Output is correct |
| 57 |
Correct |
53 ms |
2236 KB |
Output is correct |
| 58 |
Correct |
34 ms |
2236 KB |
Output is correct |
| 59 |
Correct |
32 ms |
2236 KB |
Output is correct |
| 60 |
Correct |
49 ms |
2236 KB |
Output is correct |
| 61 |
Correct |
8 ms |
2236 KB |
Output is correct |
| 62 |
Correct |
11 ms |
2236 KB |
Output is correct |
| 63 |
Correct |
11 ms |
2236 KB |
Output is correct |
| 64 |
Correct |
15 ms |
2236 KB |
Output is correct |
| 65 |
Correct |
12 ms |
2236 KB |
Output is correct |
| 66 |
Correct |
15 ms |
2236 KB |
Output is correct |
| 67 |
Correct |
14 ms |
2236 KB |
Output is correct |
| 68 |
Correct |
13 ms |
2236 KB |
Output is correct |
| 69 |
Correct |
14 ms |
2236 KB |
Output is correct |
| 70 |
Correct |
16 ms |
2236 KB |
Output is correct |
| 71 |
Correct |
22 ms |
2236 KB |
Output is correct |
| 72 |
Correct |
12 ms |
2236 KB |
Output is correct |
| 73 |
Correct |
42 ms |
2236 KB |
Output is correct |
| 74 |
Correct |
64 ms |
2236 KB |
Output is correct |
| 75 |
Correct |
12 ms |
2236 KB |
Output is correct |
| 76 |
Correct |
41 ms |
2236 KB |
Output is correct |
| 77 |
Correct |
43 ms |
2236 KB |
Output is correct |
| 78 |
Correct |
19 ms |
2236 KB |
Output is correct |
| 79 |
Correct |
18 ms |
2236 KB |
Output is correct |
| 80 |
Correct |
68 ms |
2236 KB |
Output is correct |
| 81 |
Correct |
40 ms |
2236 KB |
Output is correct |
| 82 |
Correct |
21 ms |
2236 KB |
Output is correct |
| 83 |
Correct |
10 ms |
2236 KB |
Output is correct |
| 84 |
Correct |
42 ms |
2236 KB |
Output is correct |
| 85 |
Correct |
41 ms |
2236 KB |
Output is correct |
| 86 |
Correct |
40 ms |
2236 KB |
Output is correct |
| 87 |
Correct |
9 ms |
2236 KB |
Output is correct |
| 88 |
Correct |
43 ms |
2236 KB |
Output is correct |
| 89 |
Correct |
38 ms |
2236 KB |
Output is correct |
| 90 |
Correct |
9 ms |
2236 KB |
Output is correct |
| 91 |
Correct |
26 ms |
2236 KB |
Output is correct |
| 92 |
Correct |
41 ms |
2236 KB |
Output is correct |
| 93 |
Correct |
47 ms |
2236 KB |
Output is correct |
| 94 |
Correct |
44 ms |
2236 KB |
Output is correct |
| 95 |
Correct |
42 ms |
2236 KB |
Output is correct |
| 96 |
Correct |
49 ms |
2236 KB |
Output is correct |
| 97 |
Correct |
44 ms |
2236 KB |
Output is correct |
