#include <bits/stdc++.h>
#include "prize.h"
using namespace std;
typedef long long ll;
vector<pair<int, int>> cache;
pair<int, int> get(int i) {
if (cache[i].first >= 0) return cache[i];
auto res = ask(i);
return cache[i] = {res[0], res[1]};
}
int getSegment(int low, int high, int mxDeg, int idLow, int idHigh) {
int prevLeft = low;
vector<bool> vst(idHigh);
for (int i = idLow; i < idHigh; i++) {
if (vst[i]) continue;
int left = prevLeft, right = high-1;
while (left < right) {
int mid = (left+right+1)/2;
pair<int, int> val = get(mid);
int deg = val.first + val.second;
int cnt = 0;
int orig = mid;
while (deg < mxDeg && mid > 0) {
if (deg == 0) return mid;
mid--; right--;
val = get(mid);
deg = val.first + val.second;
cnt++;
}
if (deg == 0) return mid;
if (cnt > 0) {
int ptr = 0;
while (cnt--) vst[val.first + ptr++] = true;
}
if (vst[i]) {
prevLeft = orig+1;
break;
}
if (val.first <= i) {
left = mid;
prevLeft = left+1;
}
else {
right = mid-1;
}
}
if (vst[i]) continue;
if(get(left).first + get(left).second == 0) return left;
vst[i] = true;
}
return -1;
}
int find_best(int n) {
cache = vector<pair<int, int>>(n, {-1, -1});
int root = (int)sqrt(n);
ll mxDeg = 0;
int c = 300;
for (int i = n-1; i >= n - c && i >= 0; i--) {
ll deg = get(i).first + get(i).second;
if (deg == 0) return i;
mxDeg = max(mxDeg, deg);
}
int m = max(n - c, 0);
for (int low = 0; low < m; low += root) {
pair<int, int> valLow = get(low);
while (low < m && valLow.first + valLow.second < mxDeg) {
if (valLow.first + valLow.second == 0) return low;
valLow = get(++low);
}
if (low >= m) break;
int high = min(low + root, m);
pair<int, int> valHigh = get(high);
while (high > low && valHigh.first + valHigh.second < mxDeg) {
if (valHigh.first + valHigh.second == 0) return high;
valHigh = get(--high);
}
if (high <= low) continue;
ll ans = getSegment(low, high, mxDeg, valLow.first, valHigh.first);
if (ans != -1) return ans;
}
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 2 |
Correct |
4 ms |
1880 KB |
Output is correct |
| 3 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 4 |
Correct |
1 ms |
1880 KB |
Output is correct |
| 5 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 6 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 7 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 8 |
Correct |
3 ms |
1880 KB |
Output is correct |
| 9 |
Correct |
4 ms |
1880 KB |
Output is correct |
| 10 |
Correct |
6 ms |
1880 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 2 |
Correct |
3 ms |
1876 KB |
Output is correct |
| 3 |
Correct |
3 ms |
1880 KB |
Output is correct |
| 4 |
Correct |
1 ms |
1880 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1880 KB |
Output is correct |
| 6 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 7 |
Correct |
3 ms |
1880 KB |
Output is correct |
| 8 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 9 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 10 |
Correct |
4 ms |
1880 KB |
Output is correct |
| 11 |
Correct |
4 ms |
1880 KB |
Output is correct |
| 12 |
Correct |
3 ms |
1880 KB |
Output is correct |
| 13 |
Correct |
5 ms |
1880 KB |
Output is correct |
| 14 |
Correct |
3 ms |
600 KB |
Output is correct |
| 15 |
Correct |
5 ms |
1880 KB |
Output is correct |
| 16 |
Correct |
17 ms |
1880 KB |
Output is correct |
| 17 |
Correct |
3 ms |
1880 KB |
Output is correct |
| 18 |
Correct |
36 ms |
1880 KB |
Output is correct |
| 19 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 20 |
Correct |
7 ms |
1112 KB |
Output is correct |
| 21 |
Correct |
9 ms |
1880 KB |
Output is correct |
| 22 |
Correct |
4 ms |
1880 KB |
Output is correct |
| 23 |
Correct |
2 ms |
1960 KB |
Output is correct |
| 24 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 25 |
Correct |
16 ms |
1880 KB |
Output is correct |
| 26 |
Correct |
15 ms |
1880 KB |
Output is correct |
| 27 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 28 |
Correct |
14 ms |
1880 KB |
Output is correct |
| 29 |
Correct |
15 ms |
1880 KB |
Output is correct |
| 30 |
Correct |
14 ms |
1880 KB |
Output is correct |
| 31 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 32 |
Correct |
3 ms |
1880 KB |
Output is correct |
| 33 |
Correct |
1 ms |
344 KB |
Output is correct |
| 34 |
Correct |
10 ms |
1880 KB |
Output is correct |
| 35 |
Correct |
4 ms |
1880 KB |
Output is correct |
| 36 |
Correct |
5 ms |
1880 KB |
Output is correct |
| 37 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 38 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 39 |
Correct |
11 ms |
1880 KB |
Output is correct |
| 40 |
Correct |
19 ms |
1880 KB |
Output is correct |
| 41 |
Correct |
13 ms |
1880 KB |
Output is correct |
| 42 |
Correct |
9 ms |
1880 KB |
Output is correct |
| 43 |
Correct |
8 ms |
1880 KB |
Output is correct |
| 44 |
Correct |
10 ms |
1880 KB |
Output is correct |
| 45 |
Correct |
8 ms |
1880 KB |
Output is correct |
| 46 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 47 |
Correct |
14 ms |
1880 KB |
Output is correct |
| 48 |
Correct |
14 ms |
1880 KB |
Output is correct |
| 49 |
Correct |
3 ms |
1880 KB |
Output is correct |
| 50 |
Correct |
21 ms |
1880 KB |
Output is correct |
| 51 |
Correct |
10 ms |
1880 KB |
Output is correct |
| 52 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 53 |
Correct |
6 ms |
1880 KB |
Output is correct |
| 54 |
Correct |
10 ms |
1880 KB |
Output is correct |
| 55 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 56 |
Correct |
21 ms |
1964 KB |
Output is correct |
| 57 |
Correct |
19 ms |
1880 KB |
Output is correct |
| 58 |
Correct |
19 ms |
1880 KB |
Output is correct |
| 59 |
Correct |
16 ms |
1880 KB |
Output is correct |
| 60 |
Correct |
12 ms |
1880 KB |
Output is correct |
| 61 |
Correct |
4 ms |
1876 KB |
Output is correct |
| 62 |
Correct |
3 ms |
1880 KB |
Output is correct |
| 63 |
Correct |
4 ms |
1880 KB |
Output is correct |
| 64 |
Correct |
3 ms |
1880 KB |
Output is correct |
| 65 |
Correct |
1 ms |
1880 KB |
Output is correct |
| 66 |
Correct |
1 ms |
1928 KB |
Output is correct |
| 67 |
Correct |
3 ms |
1880 KB |
Output is correct |
| 68 |
Correct |
3 ms |
1880 KB |
Output is correct |
| 69 |
Correct |
1 ms |
1880 KB |
Output is correct |
| 70 |
Correct |
2 ms |
1876 KB |
Output is correct |
| 71 |
Correct |
31 ms |
1880 KB |
Output is correct |
| 72 |
Correct |
4 ms |
1880 KB |
Output is correct |
| 73 |
Correct |
31 ms |
1880 KB |
Output is correct |
| 74 |
Correct |
21 ms |
1880 KB |
Output is correct |
| 75 |
Correct |
4 ms |
1880 KB |
Output is correct |
| 76 |
Correct |
20 ms |
1880 KB |
Output is correct |
| 77 |
Correct |
18 ms |
1880 KB |
Output is correct |
| 78 |
Correct |
6 ms |
1880 KB |
Output is correct |
| 79 |
Correct |
14 ms |
1880 KB |
Output is correct |
| 80 |
Correct |
22 ms |
1880 KB |
Output is correct |
| 81 |
Correct |
20 ms |
1880 KB |
Output is correct |
| 82 |
Correct |
28 ms |
1880 KB |
Output is correct |
| 83 |
Correct |
5 ms |
1880 KB |
Output is correct |
| 84 |
Correct |
15 ms |
1880 KB |
Output is correct |
| 85 |
Correct |
20 ms |
1880 KB |
Output is correct |
| 86 |
Correct |
5 ms |
1880 KB |
Output is correct |
| 87 |
Correct |
3 ms |
1880 KB |
Output is correct |
| 88 |
Correct |
4 ms |
1880 KB |
Output is correct |
| 89 |
Correct |
4 ms |
1880 KB |
Output is correct |
| 90 |
Correct |
3 ms |
1880 KB |
Output is correct |
| 91 |
Correct |
4 ms |
1880 KB |
Output is correct |
| 92 |
Correct |
4 ms |
1880 KB |
Output is correct |
| 93 |
Correct |
5 ms |
1880 KB |
Output is correct |
| 94 |
Correct |
5 ms |
1880 KB |
Output is correct |
| 95 |
Correct |
5 ms |
1880 KB |
Output is correct |
| 96 |
Correct |
4 ms |
1880 KB |
Output is correct |
| 97 |
Correct |
6 ms |
1880 KB |
Output is correct |
