#include<bits/stdc++.h>
#include "grader.h"
using namespace std;
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define eb emplace_back
#define all(vr) vr.begin(),vr.end()
#define vi vector<int>
#define vll vector<ll>
namespace myrand
{
mt19937 mt(chrono::system_clock::now().time_since_epoch() / chrono::microseconds(1));
ll Int(ll l,ll r) {return uniform_int_distribution<ll> (l,r)(mt);}
}
using namespace myrand;
const int N = 1e5 + 10;
/*int ans, pv;
int Guess(int x)
{
int val = abs(x - ans), res;
if (pv == -1 || val == pv) res = 0;
if (val < pv) res = 1;
if (val > pv) res = -1;
pv = val;
return res;
}*/
int HC(int n){
if (n == 1) return 1;
Guess(1);
int g = Guess(n);
int prv = n;
int side, l = 1, r = n; // 0 = left, 1 = right
if (g == 0) return (n + 1) / 2;
if (g == 1) side = 1, l = (n + 1) / 2 + 1;
else side = 0, r = n / 2;
if (side == 0)
while (r - l + 1 > 3)
{
Guess(1);
int mid = (r + 3) / 4;
g = Guess(mid * 2 - 1);
if (g == 0) return mid;
if (g == -1) r = mid - 1;
else
{
l = mid + 1;
for (int i = 1; i <= 2; ++i)
{
Guess(l);
g = Guess(r);
prv = r;
if (g == 0) return (l + r) / 2;
if (g == 1) l = (l + r) / 2 + 1;
else r = (l + r - 1) / 2;
}
break;
}
}
else
while (r - l + 1 > 3)
{
Guess(n);
int mid = n - (n - l + 4) / 4 + 1;
g = Guess(mid * 2 - n);
if (g == 0) return mid;
if (g == -1) l = mid + 1;
else
{
r = mid - 1;
for (int i = 1; i <= 2; ++i)
{
Guess(l);
g = Guess(r);
prv = r;
if (g == 0) return (l + r) / 2;
if (g == 1) l = (l + r) / 2 + 1;
else r = (l + r - 1) / 2;
}
break;
}
}
if (r - l + 1 <= 3)
{
Guess(l);
g = Guess(r);
if (g == 0) return (l + r) / 2;
if (g == 1) return r;
return l;
}
while (l < r)
{
int mid = (l + r) / 2;
if (prv <= l)
{
g = Guess(r + l - prv);
prv = r + l - prv;
if (g == 0) return mid;
if (g == -1) r = mid;
else l = mid + 1;
}
else
{
g = Guess(l - (prv - r));
prv = l - (prv - r);
if (g == 0) return mid;
if (g == -1) l = mid + 1;
else r = mid;
}
}
return l;
}
/*int main()
{
//freopen("ss.inp", "r", stdin);
ios::sync_with_stdio(false);
cin.tie(0);
/*ans = 499;
pv = -1;
cout << HC(500);
int T = 1000;
for (int i = 1; i <= T; ++i)
{
ans = Int(1, 500);
pv = -1;
cout << i << " ";
if (HC(500) != ans) cout << ans << " WA\n";
else cout << "AC\n";
}
return 0;
}*/
Compilation message
hottercolder.cpp:128:5: warning: "/*" within comment [-Wcomment]
128 | /*ans = 499;
|
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
22 ms |
1296 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
23 ms |
1328 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
23 ms |
1324 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
634 ms |
8108 KB |
Output isn't correct - alpha = 0.000000000000 |
