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Submission #1114536

# Submission time Handle Problem Language Result Execution time Memory
1114536 2024-11-19T07:19:59 Z SalihSahin Mađioničar (COI22_madionicar) C++14
100 / 100
 3980 ms 508 KB 
#include <bits/stdc++.h>
#define pb push_back
#define int long long
using namespace std;
 
const int inf = 1e15 + 10;
const int N = 3e5 + 5;

bool query(int l, int r){
   cout<<"? "<<l<<" "<<r<<endl;
   cout.flush();

   bool pal;
   cin>>pal;
   return pal;
}

int32_t main(){
   int n;
   cin>>n;

   int oddmx = 1, evenmx = 0;
   for(int i = 1; i <= n; i++){
      int st = oddmx + 2;

      for(int len = st; len <= n; len += 2){
         int l = i - (len - 1)/2, r = i + (len - 1)/2;
         if(l < 1 || r > n) break;
         bool pal = query(l, r);
         if(!pal) break;
         oddmx = len;
      }
   }

   for(int i = 1; i <= n; i++){
      int st = max(oddmx + 1, evenmx + 2);
      
      for(int len = st; len <= n; len += 2){
         int l = i - len/2 + 1, r = i + len/2;
         if(l < 1 || r > n) break;
         bool pal = query(l, r);
         if(!pal) break;
         evenmx = len;
      }
   }

   int ans = max(oddmx, evenmx);
   cout<<"! "<<ans<<endl;
   cout.flush();
   return 0;
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 279 ms 336 KB Output is correct
2 Correct 278 ms 336 KB Output is correct
3 Correct 254 ms 336 KB Output is correct
4 Correct 292 ms 336 KB Output is correct
5 Correct 239 ms 336 KB Output is correct
6 Correct 247 ms 336 KB Output is correct
7 Correct 136 ms 336 KB Output is correct
8 Correct 122 ms 508 KB Output is correct
9 Correct 218 ms 336 KB Output is correct
10 Correct 259 ms 336 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 279 ms 336 KB Output is correct
2 Correct 278 ms 336 KB Output is correct
3 Correct 254 ms 336 KB Output is correct
4 Correct 292 ms 336 KB Output is correct
5 Correct 239 ms 336 KB Output is correct
6 Correct 247 ms 336 KB Output is correct
7 Correct 136 ms 336 KB Output is correct
8 Correct 122 ms 508 KB Output is correct
9 Correct 218 ms 336 KB Output is correct
10 Correct 259 ms 336 KB Output is correct
11 Correct 2527 ms 336 KB Output is correct
12 Correct 2470 ms 336 KB Output is correct
13 Correct 2558 ms 336 KB Output is correct
14 Correct 2364 ms 336 KB Output is correct
15 Correct 2386 ms 336 KB Output is correct
16 Correct 1246 ms 336 KB Output is correct
17 Correct 1277 ms 336 KB Output is correct
18 Correct 2566 ms 336 KB Output is correct
19 Correct 1235 ms 336 KB Output is correct
20 Correct 2149 ms 336 KB Output is correct
21 Correct 2200 ms 336 KB Output is correct
22 Correct 2495 ms 336 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 3923 ms 336 KB Output is correct
2 Correct 970 ms 336 KB Output is correct
3 Correct 3763 ms 336 KB Output is correct
4 Correct 2344 ms 336 KB Output is correct
5 Correct 1754 ms 336 KB Output is correct
6 Correct 3824 ms 336 KB Output is correct
7 Correct 1948 ms 336 KB Output is correct
8 Correct 3912 ms 336 KB Output is correct
9 Correct 3822 ms 336 KB Output is correct
10 Correct 3859 ms 336 KB Output is correct
11 Correct 1863 ms 336 KB Output is correct
12 Correct 1926 ms 336 KB Output is correct
13 Correct 3740 ms 336 KB Output is correct
14 Correct 3885 ms 336 KB Output is correct

Subtask #4
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 279 ms 336 KB Output is correct
2 Correct 278 ms 336 KB Output is correct
3 Correct 254 ms 336 KB Output is correct
4 Correct 292 ms 336 KB Output is correct
5 Correct 239 ms 336 KB Output is correct
6 Correct 247 ms 336 KB Output is correct
7 Correct 136 ms 336 KB Output is correct
8 Correct 122 ms 508 KB Output is correct
9 Correct 218 ms 336 KB Output is correct
10 Correct 259 ms 336 KB Output is correct
11 Correct 2527 ms 336 KB Output is correct
12 Correct 2470 ms 336 KB Output is correct
13 Correct 2558 ms 336 KB Output is correct
14 Correct 2364 ms 336 KB Output is correct
15 Correct 2386 ms 336 KB Output is correct
16 Correct 1246 ms 336 KB Output is correct
17 Correct 1277 ms 336 KB Output is correct
18 Correct 2566 ms 336 KB Output is correct
19 Correct 1235 ms 336 KB Output is correct
20 Correct 2149 ms 336 KB Output is correct
21 Correct 2200 ms 336 KB Output is correct
22 Correct 2495 ms 336 KB Output is correct
23 Correct 3923 ms 336 KB Output is correct
24 Correct 970 ms 336 KB Output is correct
25 Correct 3763 ms 336 KB Output is correct
26 Correct 2344 ms 336 KB Output is correct
27 Correct 1754 ms 336 KB Output is correct
28 Correct 3824 ms 336 KB Output is correct
29 Correct 1948 ms 336 KB Output is correct
30 Correct 3912 ms 336 KB Output is correct
31 Correct 3822 ms 336 KB Output is correct
32 Correct 3859 ms 336 KB Output is correct
33 Correct 1863 ms 336 KB Output is correct
34 Correct 1926 ms 336 KB Output is correct
35 Correct 3740 ms 336 KB Output is correct
36 Correct 3885 ms 336 KB Output is correct
37 Correct 3859 ms 336 KB Output is correct
38 Correct 3863 ms 336 KB Output is correct
39 Correct 3811 ms 336 KB Output is correct
40 Correct 3743 ms 336 KB Output is correct
41 Correct 3685 ms 336 KB Output is correct
42 Correct 2452 ms 336 KB Output is correct
43 Correct 1941 ms 336 KB Output is correct
44 Correct 3878 ms 336 KB Output is correct
45 Correct 1948 ms 336 KB Output is correct
46 Correct 3768 ms 336 KB Output is correct
47 Correct 3795 ms 336 KB Output is correct
48 Correct 3784 ms 336 KB Output is correct
49 Correct 1922 ms 336 KB Output is correct
50 Correct 2044 ms 336 KB Output is correct
51 Correct 3980 ms 336 KB Output is correct
52 Correct 3842 ms 336 KB Output is correct