QOJ.ac

QOJ

ID	题目	提交者	结果	用时	内存	语言	文件大小	提交时间	测评时间
#104721	#6394. Turn on the Light	gapinho^#	AC ✓	6ms	3568kb	C++20	1.0kb	2023-05-11 19:47:39	2023-05-11 19:47:41

Judging History

你现在查看的是最新测评结果

[2023-08-10 23:21:45]
System Update: QOJ starts to keep a history of the judgings of all the submissions.

[2023-05-11 19:47:41]
评测

测评结果：AC
用时：6ms
内存：3568kb

查看

[2023-05-11 19:47:39]
提交

answer

#include <bits/stdc++.h>
using namespace std;

using ll = __int128_t;

#define int long long

using ii = pair<int, int>;

// #define endl '\n'

const int ms = 505;

int query(int x) {
  cout << "? " << x << endl;
  int y;
  cin >> y;
  return y;
}

void go(int i){
  cout << "! " << i << endl;
  exit(0); 
}

void solve() {
  int n;
  cin >> n;
  for(int i = 1; i <= min(n, 20ll); i++) {
    int ans = query(i);
    if(ans != i) {
      go(i);
    }
  }
  int num = 20;
  int lo = 21, hi = n;
  while(lo != hi) {
    int mi = (lo+hi)/2;
    int k = query(mi);
    if(k == num) {
      lo = mi;
      hi = mi;
    } else if(k > num) {
      lo = mi+1;
    } else {
      hi = mi - 1;
    }
    num = k;
  }
  go(lo);
}

int32_t main() {
    cin.tie(0); ios::sync_with_stdio(0);
    cout << fixed << setprecision(9);
    int testes = 1;
    // cin >> testes;
    int test = 0;

    while(testes--) {
      // cout << "Case #" << (++test) << ": ";
        solve();
    }
}

源文件, 语言: C++20

詳細信息

Test #1:

score: 100

Accepted

time: 1ms

memory: 3408kb

input:

output:

? 1
? 2
? 3
! 3

result:

ok Correct position at 3

Test #2:

score: 0

Accepted

time: 0ms

memory: 3396kb

input:

output:

? 1
? 2
? 3
? 4
? 5
? 6
? 7
? 8
? 9
! 9

result:

ok Correct position at 9

Test #3:

score: 0

Accepted

time: 2ms

memory: 3364kb

input:

output:

? 1
? 2
? 3
? 4
? 5
? 6
? 7
? 8
! 8

result:

ok Correct position at 8

Test #4:

score: 0

Accepted

time: 3ms

memory: 3404kb

input:

output:

? 1
? 2
? 3
? 4
? 5
? 6
? 7
! 7

result:

ok Correct position at 7

Test #5:

score: 0

Accepted

time: 3ms

memory: 3552kb

input:

output:

? 1
? 2
? 3
? 4
? 5
? 6
! 6

result:

ok Correct position at 6

Test #6:

score: 0

Accepted

time: 1ms

memory: 3388kb

input:

output:

? 1
? 2
? 3
? 4
? 5
? 6
! 6

result:

ok Correct position at 6

Test #7:

score: 0

Accepted

time: 2ms

memory: 3344kb

input:

output:

? 1
? 2
? 3
? 4
! 4

result:

ok Correct position at 4

Test #8:

score: 0

Accepted

time: 2ms

memory: 3444kb

input:

output:

? 1
? 2
? 3
? 4
! 4

result:

ok Correct position at 4

Test #9:

score: 0

Accepted

time: 0ms

memory: 3340kb

input:

3
1
1

output:

? 1
? 2
! 2

result:

ok Correct position at 2

Test #10:

score: 0

Accepted

time: 2ms

memory: 3404kb

input:

2
1
1

output:

? 1
? 2
! 2

result:

ok Correct position at 2

Test #11:

score: 0

Accepted

time: 2ms

memory: 3400kb

input:

1
0

output:

? 1
! 1

result:

ok Correct position at 1

Test #12:

score: 0

Accepted

time: 4ms

memory: 3404kb

input:

output:

result:

ok Correct position at 937462

Test #13:

score: 0

Accepted

time: 2ms

memory: 3384kb

input:

output:

result:

ok Correct position at 187476

Test #14:

score: 0

Accepted

time: 4ms

memory: 3500kb

input:

output:

result:

ok Correct position at 687465

Test #15:

score: 0

Accepted

time: 2ms

memory: 3400kb

input:

output:

result:

ok Correct position at 437470

Test #16:

score: 0

Accepted

time: 6ms

memory: 3500kb

input:

output:

result:

ok Correct position at 937458

Test #17:

score: 0

Accepted

time: 0ms

memory: 3312kb

input:

output:

result:

ok Correct position at 249974

Test #18:

score: 0

Accepted

time: 0ms

memory: 3404kb

input:

output:

result:

ok Correct position at 749961

Test #19:

score: 0

Accepted

time: 5ms

memory: 3392kb

input:

output:

result:

ok Correct position at 499967

Test #20:

score: 0

Accepted

time: 0ms

memory: 3404kb

input:

output:

result:

ok Correct position at 999953

Test #21:

score: 0

Accepted

time: 5ms

memory: 3400kb

input:

output:

result:

ok Correct position at 249973

Test #22:

score: 0

Accepted

time: 2ms

memory: 3396kb

input:

output:

result:

ok Correct position at 43

Test #23:

score: 0

Accepted

time: 4ms

memory: 3408kb

input:

output:

result:

ok Correct position at 51

Test #24:

score: 0

Accepted

time: 4ms

memory: 3364kb

input:

output:

result:

ok Correct position at 51

Test #25:

score: 0

Accepted

time: 0ms

memory: 3404kb

input:

output:

result:

ok Correct position at 51

Test #26:

score: 0

Accepted

time: 4ms

memory: 3548kb

input:

output:

result:

ok Correct position at 999781

Test #27:

score: 0

Accepted

time: 1ms

memory: 3392kb

input:

output:

result:

ok Correct position at 999980

Test #28:

score: 0

Accepted

time: 1ms

memory: 3368kb

input:

output:

result:

ok Correct position at 999979

Test #29:

score: 0

Accepted

time: 2ms

memory: 3396kb

input:

output:

result:

ok Correct position at 999978

Test #30:

score: 0

Accepted

time: 0ms

memory: 3404kb

input:

output:

result:

ok Correct position at 499947

Test #31:

score: 0

Accepted

time: 4ms

memory: 3360kb

input:

output:

result:

ok Correct position at 500070

Test #32:

score: 0

Accepted

time: 1ms

memory: 3416kb

input:

output:

result:

ok Correct position at 500076

Test #33:

score: 0

Accepted

time: 2ms

memory: 3316kb

input:

output:

result:

ok Correct position at 499965

Test #34:

score: 0

Accepted

time: 5ms

memory: 3412kb

input:

output:

result:

ok Correct position at 795856

Test #35:

score: 0

Accepted

time: 5ms

memory: 3300kb

input:

output:

result:

ok Correct position at 170868

Test #36:

score: 0

Accepted

time: 3ms

memory: 3400kb

input:

output:

result:

ok Correct position at 670857

Test #37:

score: 0

Accepted

time: 4ms

memory: 3392kb

input:

output:

result:

ok Correct position at 420862

Test #38:

score: 0

Accepted

time: 5ms

memory: 3568kb

input:

output:

result:

ok Correct position at 1000000

Test #39:

score: 0

Accepted

time: 4ms

memory: 3344kb

input:

output:

result:

ok Correct position at 999999

Test #40:

score: 0

Accepted

time: 4ms

memory: 3408kb

input:

output:

result:

ok Correct position at 999998

Test #41:

score: 0

Accepted

time: 3ms

memory: 3552kb

input:

output:

result:

ok Correct position at 999997

Test #42:

score: 0

Accepted

time: 3ms

memory: 3400kb

input:

output:

result:

ok Correct position at 1000000

Test #43:

score: 0

Accepted

time: 2ms

memory: 3400kb

input:

1000000
0

output:

? 1
! 1

result:

ok Correct position at 1