#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,popcnt,sse4,abm")
#include <bits/stdc++.h>
using namespace std;
#ifdef WAIMAI
#define debug(HEHE...) cout << "[" << #HEHE << "] : ", dout(HEHE)
void dout() {cout << '\n';}
template<typename T, typename...U>
void dout(T t, U...u) {cout << t << (sizeof...(u) ? ", " : ""), dout(u...);}
#else
#define debug(...) 7122
#endif
#define ll long long
#define Waimai ios::sync_with_stdio(false), cin.tie(0)
#define FOR(x,a,b) for (int x = a, I = b; x <= I; x++)
#define pb emplace_back
#define F first
#define S second
const int SIZE = 2e5 + 5;
int n;
int z[SIZE];
int cnt;
int que(int l, int r) {
if (l & 1) return 1;
cnt++;
if (cnt == 200000) {
cout << "! " << *max_element(z + 1, z + n + 1) << '\n';
exit(0);
}
int foo = 114514;
l /= 2, r /= 2;
cout << "? " << l << ' ' << r << endl;
cin >> foo;
return foo;
}
void solve() {
cin >> n;
n = 2 * n + 1;
for (int i = 1, mid = 0, r = 0; i <= n; i++) {
if (i <= r) {
z[i] = min(z[2 * mid - i], r - i);
if (i + z[i] < r) continue;
}
int len = min(i - 1, n - i);
for (int j = z[i] + 1; j <= len; j++) {
if (que(i - j, i + j) == 0) break;
z[i]++;
}
if (i + z[i] > r) {
mid = i;
r = i + z[i];
}
}
cout << "! " << *max_element(z + 1, z + n + 1) << '\n';
}
int main() {
Waimai;
solve();
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
53 ms |
1224 KB |
Output is correct |
2 |
Correct |
69 ms |
980 KB |
Output is correct |
3 |
Correct |
85 ms |
1004 KB |
Output is correct |
4 |
Correct |
54 ms |
992 KB |
Output is correct |
5 |
Correct |
92 ms |
724 KB |
Output is correct |
6 |
Correct |
77 ms |
976 KB |
Output is correct |
7 |
Correct |
72 ms |
724 KB |
Output is correct |
8 |
Correct |
73 ms |
724 KB |
Output is correct |
9 |
Correct |
99 ms |
972 KB |
Output is correct |
10 |
Correct |
70 ms |
1108 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
53 ms |
1224 KB |
Output is correct |
2 |
Correct |
69 ms |
980 KB |
Output is correct |
3 |
Correct |
85 ms |
1004 KB |
Output is correct |
4 |
Correct |
54 ms |
992 KB |
Output is correct |
5 |
Correct |
92 ms |
724 KB |
Output is correct |
6 |
Correct |
77 ms |
976 KB |
Output is correct |
7 |
Correct |
72 ms |
724 KB |
Output is correct |
8 |
Correct |
73 ms |
724 KB |
Output is correct |
9 |
Correct |
99 ms |
972 KB |
Output is correct |
10 |
Correct |
70 ms |
1108 KB |
Output is correct |
11 |
Correct |
557 ms |
1580 KB |
Output is correct |
12 |
Correct |
671 ms |
1640 KB |
Output is correct |
13 |
Correct |
643 ms |
2112 KB |
Output is correct |
14 |
Correct |
549 ms |
1400 KB |
Output is correct |
15 |
Correct |
675 ms |
1932 KB |
Output is correct |
16 |
Correct |
626 ms |
1144 KB |
Output is correct |
17 |
Correct |
618 ms |
1100 KB |
Output is correct |
18 |
Correct |
574 ms |
1644 KB |
Output is correct |
19 |
Correct |
972 ms |
1516 KB |
Output is correct |
20 |
Correct |
626 ms |
1672 KB |
Output is correct |
21 |
Correct |
557 ms |
1876 KB |
Output is correct |
22 |
Correct |
654 ms |
1908 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
841 ms |
2044 KB |
Output is correct |
2 |
Correct |
474 ms |
1644 KB |
Output is correct |
3 |
Correct |
843 ms |
1964 KB |
Output is correct |
4 |
Correct |
1000 ms |
1188 KB |
Output is correct |
5 |
Correct |
1010 ms |
1456 KB |
Output is correct |
6 |
Correct |
807 ms |
2408 KB |
Output is correct |
7 |
Correct |
969 ms |
1412 KB |
Output is correct |
8 |
Correct |
786 ms |
1964 KB |
Output is correct |
9 |
Correct |
787 ms |
2264 KB |
Output is correct |
10 |
Correct |
829 ms |
1872 KB |
Output is correct |
11 |
Correct |
999 ms |
1368 KB |
Output is correct |
12 |
Correct |
999 ms |
1224 KB |
Output is correct |
13 |
Correct |
860 ms |
1940 KB |
Output is correct |
14 |
Correct |
852 ms |
2028 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
53 ms |
1224 KB |
Output is correct |
2 |
Correct |
69 ms |
980 KB |
Output is correct |
3 |
Correct |
85 ms |
1004 KB |
Output is correct |
4 |
Correct |
54 ms |
992 KB |
Output is correct |
5 |
Correct |
92 ms |
724 KB |
Output is correct |
6 |
Correct |
77 ms |
976 KB |
Output is correct |
7 |
Correct |
72 ms |
724 KB |
Output is correct |
8 |
Correct |
73 ms |
724 KB |
Output is correct |
9 |
Correct |
99 ms |
972 KB |
Output is correct |
10 |
Correct |
70 ms |
1108 KB |
Output is correct |
11 |
Correct |
557 ms |
1580 KB |
Output is correct |
12 |
Correct |
671 ms |
1640 KB |
Output is correct |
13 |
Correct |
643 ms |
2112 KB |
Output is correct |
14 |
Correct |
549 ms |
1400 KB |
Output is correct |
15 |
Correct |
675 ms |
1932 KB |
Output is correct |
16 |
Correct |
626 ms |
1144 KB |
Output is correct |
17 |
Correct |
618 ms |
1100 KB |
Output is correct |
18 |
Correct |
574 ms |
1644 KB |
Output is correct |
19 |
Correct |
972 ms |
1516 KB |
Output is correct |
20 |
Correct |
626 ms |
1672 KB |
Output is correct |
21 |
Correct |
557 ms |
1876 KB |
Output is correct |
22 |
Correct |
654 ms |
1908 KB |
Output is correct |
23 |
Correct |
841 ms |
2044 KB |
Output is correct |
24 |
Correct |
474 ms |
1644 KB |
Output is correct |
25 |
Correct |
843 ms |
1964 KB |
Output is correct |
26 |
Correct |
1000 ms |
1188 KB |
Output is correct |
27 |
Correct |
1010 ms |
1456 KB |
Output is correct |
28 |
Correct |
807 ms |
2408 KB |
Output is correct |
29 |
Correct |
969 ms |
1412 KB |
Output is correct |
30 |
Correct |
786 ms |
1964 KB |
Output is correct |
31 |
Correct |
787 ms |
2264 KB |
Output is correct |
32 |
Correct |
829 ms |
1872 KB |
Output is correct |
33 |
Correct |
999 ms |
1368 KB |
Output is correct |
34 |
Correct |
999 ms |
1224 KB |
Output is correct |
35 |
Correct |
860 ms |
1940 KB |
Output is correct |
36 |
Correct |
852 ms |
2028 KB |
Output is correct |
37 |
Correct |
847 ms |
1944 KB |
Output is correct |
38 |
Correct |
988 ms |
1696 KB |
Output is correct |
39 |
Correct |
987 ms |
2016 KB |
Output is correct |
40 |
Correct |
822 ms |
2088 KB |
Output is correct |
41 |
Correct |
998 ms |
1844 KB |
Output is correct |
42 |
Incorrect |
1032 ms |
1376 KB |
L = 61091, expected 72432 |
43 |
Halted |
0 ms |
0 KB |
- |