oj.uz

Submission #1005716

# Submission time Handle Problem Language Result Execution time Memory
1005716 2024-06-22T22:23:21 Z SuPythony Mađioničar (COI22_madionicar) C++17
100 / 100
 1215 ms 344 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

int main() {
    int n; cin>>n;
    int ans1=1;
    for (int i=1; i<=n; i++) {
        if (ans1==n) break;
        int l=i-(ans1+2)/2,r=i+(ans1+2)/2;
        if (l<1||r>n) continue;
        cout<<"? "<<l<<" "<<r<<endl;
        cout.flush();
        int a; cin>>a;
        if (a) {
            while (true) {
                ans1=max(ans1,r-l+1);
                l--; r++;
                if (l<1||r>n) break;
                cout<<"? "<<l<<" "<<r<<endl;
                cout.flush();
                cin>>a;
                if (!a) break;
            }
        }
    }
    int ans2=0;
    for (int i=1; i<=n; i++) {
        if (ans1==n||ans2==n) break;
        int l=i-(ans2+2)/2+1,r=i+(ans2+2)/2;
        if (l<1||r>n) continue;
        cout<<"? "<<l<<" "<<r<<endl;
        cout.flush();
        int a; cin>>a;
        if (a) {
            while (true) {
                ans2=max(ans2,r-l+1);
                l--; r++;
                if (l<1||r>n) break;
                cout<<"? "<<l<<" "<<r<<endl;
                cout.flush();
                cin>>a;
                if (!a) break;
            }
        }
    }
    cout<<"! "<<max(ans1,ans2)<<endl;
    cout.flush();
    return 0;
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 94 ms 344 KB Output is correct
2 Correct 73 ms 344 KB Output is correct
3 Correct 63 ms 344 KB Output is correct
4 Correct 99 ms 344 KB Output is correct
5 Correct 69 ms 344 KB Output is correct
6 Correct 93 ms 344 KB Output is correct
7 Correct 95 ms 344 KB Output is correct
8 Correct 86 ms 344 KB Output is correct
9 Correct 78 ms 344 KB Output is correct
10 Correct 81 ms 340 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 94 ms 344 KB Output is correct
2 Correct 73 ms 344 KB Output is correct
3 Correct 63 ms 344 KB Output is correct
4 Correct 99 ms 344 KB Output is correct
5 Correct 69 ms 344 KB Output is correct
6 Correct 93 ms 344 KB Output is correct
7 Correct 95 ms 344 KB Output is correct
8 Correct 86 ms 344 KB Output is correct
9 Correct 78 ms 344 KB Output is correct
10 Correct 81 ms 340 KB Output is correct
11 Correct 730 ms 344 KB Output is correct
12 Correct 799 ms 344 KB Output is correct
13 Correct 705 ms 344 KB Output is correct
14 Correct 719 ms 344 KB Output is correct
15 Correct 743 ms 344 KB Output is correct
16 Correct 788 ms 344 KB Output is correct
17 Correct 740 ms 344 KB Output is correct
18 Correct 783 ms 344 KB Output is correct
19 Correct 704 ms 344 KB Output is correct
20 Correct 656 ms 344 KB Output is correct
21 Correct 756 ms 344 KB Output is correct
22 Correct 736 ms 344 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1140 ms 344 KB Output is correct
2 Correct 867 ms 344 KB Output is correct
3 Correct 1182 ms 340 KB Output is correct
4 Correct 1126 ms 344 KB Output is correct
5 Correct 1130 ms 344 KB Output is correct
6 Correct 1209 ms 344 KB Output is correct
7 Correct 1215 ms 340 KB Output is correct
8 Correct 1128 ms 344 KB Output is correct
9 Correct 1186 ms 344 KB Output is correct
10 Correct 1166 ms 344 KB Output is correct
11 Correct 1135 ms 344 KB Output is correct
12 Correct 1121 ms 344 KB Output is correct
13 Correct 1130 ms 344 KB Output is correct
14 Correct 1075 ms 344 KB Output is correct

Subtask #4
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 94 ms 344 KB Output is correct
2 Correct 73 ms 344 KB Output is correct
3 Correct 63 ms 344 KB Output is correct
4 Correct 99 ms 344 KB Output is correct
5 Correct 69 ms 344 KB Output is correct
6 Correct 93 ms 344 KB Output is correct
7 Correct 95 ms 344 KB Output is correct
8 Correct 86 ms 344 KB Output is correct
9 Correct 78 ms 344 KB Output is correct
10 Correct 81 ms 340 KB Output is correct
11 Correct 730 ms 344 KB Output is correct
12 Correct 799 ms 344 KB Output is correct
13 Correct 705 ms 344 KB Output is correct
14 Correct 719 ms 344 KB Output is correct
15 Correct 743 ms 344 KB Output is correct
16 Correct 788 ms 344 KB Output is correct
17 Correct 740 ms 344 KB Output is correct
18 Correct 783 ms 344 KB Output is correct
19 Correct 704 ms 344 KB Output is correct
20 Correct 656 ms 344 KB Output is correct
21 Correct 756 ms 344 KB Output is correct
22 Correct 736 ms 344 KB Output is correct
23 Correct 1140 ms 344 KB Output is correct
24 Correct 867 ms 344 KB Output is correct
25 Correct 1182 ms 340 KB Output is correct
26 Correct 1126 ms 344 KB Output is correct
27 Correct 1130 ms 344 KB Output is correct
28 Correct 1209 ms 344 KB Output is correct
29 Correct 1215 ms 340 KB Output is correct
30 Correct 1128 ms 344 KB Output is correct
31 Correct 1186 ms 344 KB Output is correct
32 Correct 1166 ms 344 KB Output is correct
33 Correct 1135 ms 344 KB Output is correct
34 Correct 1121 ms 344 KB Output is correct
35 Correct 1130 ms 344 KB Output is correct
36 Correct 1075 ms 344 KB Output is correct
37 Correct 1143 ms 344 KB Output is correct
38 Correct 1203 ms 344 KB Output is correct
39 Correct 1168 ms 344 KB Output is correct
40 Correct 1148 ms 344 KB Output is correct
41 Correct 1121 ms 344 KB Output is correct
42 Correct 1150 ms 344 KB Output is correct
43 Correct 1132 ms 344 KB Output is correct
44 Correct 1006 ms 344 KB Output is correct
45 Correct 1054 ms 344 KB Output is correct
46 Correct 1028 ms 344 KB Output is correct
47 Correct 1087 ms 344 KB Output is correct
48 Correct 1069 ms 344 KB Output is correct
49 Correct 1101 ms 344 KB Output is correct
50 Correct 1090 ms 344 KB Output is correct
51 Correct 1006 ms 344 KB Output is correct
52 Correct 1099 ms 344 KB Output is correct