#include <bits/stdc++.h>
#define ll long long
#define fastIO cin.tie(nullptr); cout.tie(nullptr); ios::sync_with_stdio(false);
#define mid ((l + r) / 2)
#define lChild ((index * 2) + 1)
#define rChild ((index * 2) + 2)
using namespace std;
void solve(ll _) {
ll n; cin>>n;
if(n == 1) {
cout<<"= 1"<<endl;
return;
}
cout<<"? "<<1<<endl;
bool curr; cin>>curr;
ll ans = 0;
ll last = 1, now = n;
bool left = true;
while(true) {
cout<<"? "<<now<<endl;
cin>>curr;
if(curr == 1) ans = abs(now - last);
ll temp = last;
last = now;
now = temp + (left ? 1 : -1);
if(now == last) break;
left = !left;
}
cout<<"= "<<ans<<endl;
}
int main() {
fastIO
//freopen("file.in", "r", stdin);
//freopen("file.out", "w", stdout);
ll t = 0; solve(t);
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
OK (7 queries) |
| 2 |
Correct |
1 ms |
344 KB |
OK (49 queries) |
| 3 |
Correct |
0 ms |
344 KB |
OK (10 queries) |
| 4 |
Correct |
0 ms |
344 KB |
OK (26 queries) |
| 5 |
Correct |
0 ms |
344 KB |
OK (23 queries) |
| 6 |
Correct |
1 ms |
344 KB |
OK (56 queries) |
| 7 |
Correct |
1 ms |
344 KB |
OK (52 queries) |
| 8 |
Correct |
1 ms |
344 KB |
OK (43 queries) |
| 9 |
Correct |
1 ms |
340 KB |
OK (46 queries) |
| 10 |
Correct |
1 ms |
344 KB |
OK (11 queries) |
| 11 |
Correct |
1 ms |
344 KB |
OK (14 queries) |
| 12 |
Correct |
0 ms |
344 KB |
OK (23 queries) |
| 13 |
Correct |
0 ms |
344 KB |
OK (47 queries) |
| 14 |
Correct |
0 ms |
344 KB |
OK (44 queries) |
| 15 |
Correct |
1 ms |
344 KB |
OK (54 queries) |
| 16 |
Correct |
1 ms |
344 KB |
OK (53 queries) |
| 17 |
Incorrect |
0 ms |
344 KB |
Integer parameter [name=k] equals to 0, violates the range [1, 35] |
| 18 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
OK (7 queries) |
| 2 |
Correct |
1 ms |
344 KB |
OK (49 queries) |
| 3 |
Correct |
0 ms |
344 KB |
OK (10 queries) |
| 4 |
Correct |
0 ms |
344 KB |
OK (26 queries) |
| 5 |
Correct |
0 ms |
344 KB |
OK (23 queries) |
| 6 |
Correct |
1 ms |
344 KB |
OK (56 queries) |
| 7 |
Correct |
1 ms |
344 KB |
OK (52 queries) |
| 8 |
Correct |
1 ms |
344 KB |
OK (43 queries) |
| 9 |
Correct |
1 ms |
340 KB |
OK (46 queries) |
| 10 |
Correct |
1 ms |
344 KB |
OK (11 queries) |
| 11 |
Correct |
1 ms |
344 KB |
OK (14 queries) |
| 12 |
Correct |
0 ms |
344 KB |
OK (23 queries) |
| 13 |
Correct |
0 ms |
344 KB |
OK (47 queries) |
| 14 |
Correct |
0 ms |
344 KB |
OK (44 queries) |
| 15 |
Correct |
1 ms |
344 KB |
OK (54 queries) |
| 16 |
Correct |
1 ms |
344 KB |
OK (53 queries) |
| 17 |
Incorrect |
0 ms |
344 KB |
Integer parameter [name=k] equals to 0, violates the range [1, 35] |
| 18 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
OK (7 queries) |
| 2 |
Correct |
1 ms |
344 KB |
OK (49 queries) |
| 3 |
Correct |
0 ms |
344 KB |
OK (10 queries) |
| 4 |
Correct |
0 ms |
344 KB |
OK (26 queries) |
| 5 |
Correct |
0 ms |
344 KB |
OK (23 queries) |
| 6 |
Correct |
1 ms |
344 KB |
OK (56 queries) |
| 7 |
Correct |
1 ms |
344 KB |
OK (52 queries) |
| 8 |
Correct |
1 ms |
344 KB |
OK (43 queries) |
| 9 |
Correct |
1 ms |
340 KB |
OK (46 queries) |
| 10 |
Correct |
1 ms |
344 KB |
OK (11 queries) |
| 11 |
Correct |
1 ms |
344 KB |
OK (14 queries) |
| 12 |
Correct |
0 ms |
344 KB |
OK (23 queries) |
| 13 |
Correct |
0 ms |
344 KB |
OK (47 queries) |
| 14 |
Correct |
0 ms |
344 KB |
OK (44 queries) |
| 15 |
Correct |
1 ms |
344 KB |
OK (54 queries) |
| 16 |
Correct |
1 ms |
344 KB |
OK (53 queries) |
| 17 |
Incorrect |
0 ms |
344 KB |
Integer parameter [name=k] equals to 0, violates the range [1, 35] |
| 18 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
OK (7 queries) |
| 2 |
Correct |
1 ms |
344 KB |
OK (49 queries) |
| 3 |
Correct |
0 ms |
344 KB |
OK (10 queries) |
| 4 |
Correct |
0 ms |
344 KB |
OK (26 queries) |
| 5 |
Correct |
0 ms |
344 KB |
OK (23 queries) |
| 6 |
Correct |
1 ms |
344 KB |
OK (56 queries) |
| 7 |
Correct |
1 ms |
344 KB |
OK (52 queries) |
| 8 |
Correct |
1 ms |
344 KB |
OK (43 queries) |
| 9 |
Correct |
1 ms |
340 KB |
OK (46 queries) |
| 10 |
Correct |
1 ms |
344 KB |
OK (11 queries) |
| 11 |
Correct |
1 ms |
344 KB |
OK (14 queries) |
| 12 |
Correct |
0 ms |
344 KB |
OK (23 queries) |
| 13 |
Correct |
0 ms |
344 KB |
OK (47 queries) |
| 14 |
Correct |
0 ms |
344 KB |
OK (44 queries) |
| 15 |
Correct |
1 ms |
344 KB |
OK (54 queries) |
| 16 |
Correct |
1 ms |
344 KB |
OK (53 queries) |
| 17 |
Incorrect |
0 ms |
344 KB |
Integer parameter [name=k] equals to 0, violates the range [1, 35] |
| 18 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
OK (7 queries) |
| 2 |
Correct |
1 ms |
344 KB |
OK (49 queries) |
| 3 |
Correct |
0 ms |
344 KB |
OK (10 queries) |
| 4 |
Correct |
0 ms |
344 KB |
OK (26 queries) |
| 5 |
Correct |
0 ms |
344 KB |
OK (23 queries) |
| 6 |
Correct |
1 ms |
344 KB |
OK (56 queries) |
| 7 |
Correct |
1 ms |
344 KB |
OK (52 queries) |
| 8 |
Correct |
1 ms |
344 KB |
OK (43 queries) |
| 9 |
Correct |
1 ms |
340 KB |
OK (46 queries) |
| 10 |
Correct |
1 ms |
344 KB |
OK (11 queries) |
| 11 |
Correct |
1 ms |
344 KB |
OK (14 queries) |
| 12 |
Correct |
0 ms |
344 KB |
OK (23 queries) |
| 13 |
Correct |
0 ms |
344 KB |
OK (47 queries) |
| 14 |
Correct |
0 ms |
344 KB |
OK (44 queries) |
| 15 |
Correct |
1 ms |
344 KB |
OK (54 queries) |
| 16 |
Correct |
1 ms |
344 KB |
OK (53 queries) |
| 17 |
Incorrect |
0 ms |
344 KB |
Integer parameter [name=k] equals to 0, violates the range [1, 35] |
| 18 |
Halted |
0 ms |
0 KB |
- |
