oj.uz

Submission #881010

# Submission time Handle Problem Language Result Execution time Memory
881010 2023-11-30T10:45:21 Z epicci23 Mađioničar (COI22_madionicar) C++17
0 / 100
 987 ms 432 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())


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

void solve(){
  int n;
  cin >> n;
  
  for(int i=1;i<200005;i++) ask(1,n);

  int ans=1,p=1;
  for(int i=2;i<=n;i++){
  	if(p>1 && ask(p-1,i)){
  	  p--;
  	  ans=max(ans,i-p+1);
  	  continue;
  	}
    while(p<i && !ask(p,i)) p++;
    ans=max(ans,i-p+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
0 / 13.0

# Verdict Execution time Memory Grader output
1 Runtime error 987 ms 432 KB Execution killed with signal 13
2 Halted 0 ms 0 KB -

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Runtime error 987 ms 432 KB Execution killed with signal 13
2 Halted 0 ms 0 KB -

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Runtime error 918 ms 424 KB Execution killed with signal 13
2 Halted 0 ms 0 KB -

Subtask #4
0 / 37.0

# Verdict Execution time Memory Grader output
1 Runtime error 987 ms 432 KB Execution killed with signal 13
2 Halted 0 ms 0 KB -