oj.uz

Submission #881112

# Submission time Handle Problem Language Result Execution time Memory
881112 2023-11-30T15:27:59 Z epicci23 Mađioničar (COI22_madionicar) C++17
63 / 100
 1109 ms 596 KB 
#include "bits/stdc++.h"
using namespace std;
#define int long long
#define pb push_back
#define all(x) ((x).begin(),(x).end())
#define sz(x) ((int)(x).size())

int n;
 
bool ask(int l,int r){
  if(l<=0 || r>n) return 0;
  cout << "? " << l << " " << r << endl;
  bool ans; cin >> ans;
  return ans;
}

int search(int l,int r){
  while(ask(l-1,r+1)){l--;r++;}
  return r-l+1;
}

void solve(){
  cin >> n;
  int ans=1;
  
  for(int i=2;i<=n;i++){
    int u = ans/2;
    if(ask(i-u,i+u)) ans=max(ans,search(i-u,i+u));
    u = (ans+1)/2;
    if(ask(i-u,i+u-1)) ans=max(ans,search(i-u,i+u-1));
  }
  
  cout << "! " << ans << endl;
}
 
int32_t main(){
  ios::sync_with_stdio(0);cin.tie(0);
  int t=1;//cin >> t;
  while(t--) solve();
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 344 KB Output is correct
2 Correct 75 ms 596 KB Output is correct
3 Correct 125 ms 344 KB Output is correct
4 Correct 51 ms 344 KB Output is correct
5 Correct 73 ms 344 KB Output is correct
6 Correct 58 ms 344 KB Output is correct
7 Correct 67 ms 344 KB Output is correct
8 Correct 90 ms 344 KB Output is correct
9 Correct 70 ms 344 KB Output is correct
10 Correct 53 ms 340 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 344 KB Output is correct
2 Correct 75 ms 596 KB Output is correct
3 Correct 125 ms 344 KB Output is correct
4 Correct 51 ms 344 KB Output is correct
5 Correct 73 ms 344 KB Output is correct
6 Correct 58 ms 344 KB Output is correct
7 Correct 67 ms 344 KB Output is correct
8 Correct 90 ms 344 KB Output is correct
9 Correct 70 ms 344 KB Output is correct
10 Correct 53 ms 340 KB Output is correct
11 Correct 700 ms 344 KB Output is correct
12 Correct 647 ms 344 KB Output is correct
13 Correct 1022 ms 344 KB Output is correct
14 Correct 620 ms 344 KB Output is correct
15 Correct 638 ms 344 KB Output is correct
16 Correct 682 ms 344 KB Output is correct
17 Correct 657 ms 344 KB Output is correct
18 Correct 682 ms 344 KB Output is correct
19 Correct 703 ms 344 KB Output is correct
20 Correct 634 ms 344 KB Output is correct
21 Correct 717 ms 344 KB Output is correct
22 Correct 735 ms 344 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1036 ms 344 KB Output is correct
2 Correct 524 ms 344 KB Output is correct
3 Correct 1082 ms 416 KB Output is correct
4 Correct 1082 ms 344 KB Output is correct
5 Correct 1095 ms 596 KB Output is correct
6 Correct 992 ms 344 KB Output is correct
7 Correct 1068 ms 344 KB Output is correct
8 Correct 1008 ms 344 KB Output is correct
9 Correct 992 ms 344 KB Output is correct
10 Correct 993 ms 344 KB Output is correct
11 Correct 1109 ms 344 KB Output is correct
12 Correct 1008 ms 344 KB Output is correct
13 Correct 1048 ms 344 KB Output is correct
14 Correct 1016 ms 344 KB Output is correct

Subtask #4
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 344 KB Output is correct
2 Correct 75 ms 596 KB Output is correct
3 Correct 125 ms 344 KB Output is correct
4 Correct 51 ms 344 KB Output is correct
5 Correct 73 ms 344 KB Output is correct
6 Correct 58 ms 344 KB Output is correct
7 Correct 67 ms 344 KB Output is correct
8 Correct 90 ms 344 KB Output is correct
9 Correct 70 ms 344 KB Output is correct
10 Correct 53 ms 340 KB Output is correct
11 Correct 700 ms 344 KB Output is correct
12 Correct 647 ms 344 KB Output is correct
13 Correct 1022 ms 344 KB Output is correct
14 Correct 620 ms 344 KB Output is correct
15 Correct 638 ms 344 KB Output is correct
16 Correct 682 ms 344 KB Output is correct
17 Correct 657 ms 344 KB Output is correct
18 Correct 682 ms 344 KB Output is correct
19 Correct 703 ms 344 KB Output is correct
20 Correct 634 ms 344 KB Output is correct
21 Correct 717 ms 344 KB Output is correct
22 Correct 735 ms 344 KB Output is correct
23 Correct 1036 ms 344 KB Output is correct
24 Correct 524 ms 344 KB Output is correct
25 Correct 1082 ms 416 KB Output is correct
26 Correct 1082 ms 344 KB Output is correct
27 Correct 1095 ms 596 KB Output is correct
28 Correct 992 ms 344 KB Output is correct
29 Correct 1068 ms 344 KB Output is correct
30 Correct 1008 ms 344 KB Output is correct
31 Correct 992 ms 344 KB Output is correct
32 Correct 993 ms 344 KB Output is correct
33 Correct 1109 ms 344 KB Output is correct
34 Correct 1008 ms 344 KB Output is correct
35 Correct 1048 ms 344 KB Output is correct
36 Correct 1016 ms 344 KB Output is correct
37 Correct 1002 ms 344 KB Output is correct
38 Runtime error 1051 ms 424 KB Execution killed with signal 13
39 Halted 0 ms 0 KB -