oj.uz

Submission #1051864

# Submission time Handle Problem Language Result Execution time Memory
1051864 2024-08-10T10:18:52 Z matere Colors (BOI20_colors) C++14
0 / 100
 1 ms 372 KB 
#include<bits/stdc++.h>
using namespace std;
int main(){
    long long n,resp;
    cin>>n;
    if(n<=64){
        int cur=1;
        cout<<"? "<<1<<endl;
        cin>>resp;
        for(int i=0;i<n/2;i++){
            cur=n-cur+1;
            cout<<"? "<<cur<<endl;
            cin>>resp;
            if(resp==0){
                cout<<"= "<<n-i*2<<endl;
                return 0;
            }
            if(i==n/2-1){
                cout<<"= "<<1<<endl;
                return 0;
            }
            cur=n-cur+2;
            cout<<"? "<<cur<<endl;
            cin>>resp;
            if(resp==0){
                cout<<"= "<<n-i*2-1<<endl;
                return 0;
            }
        }
        cout<<1<<endl;
        return 0;
    }
    long long l=1,r=n;
    long long centr=(n+1)/2;
    while(l+l%2+2<r-r%2){
        long long mid=(l+r)/2;
        if(mid%2==1) mid--;
        cout<<"? "<<centr-mid/2<<endl;
        cin>>resp;
        cout<<"? "<<centr+mid/2<<endl;
        cin>>resp;
        if(resp==1){
            r=mid;
        }
        else{
            l=mid+1;
        }
    }
    // cout<<l<<' '<<r<<endl;
    long long r1,r2,r3,r4;
    cout<<"? "<<centr+(l+3)/2<<endl;
    cin>>r1;
    cout<<"? "<<centr-(l+3)/2<<endl;
    cin>>r2;
    cout<<"? "<<centr+(l+1)/2<<endl;
    cin>>r3;
    cout<<"? "<<centr-(l+1)/2<<endl;
    cin>>r4;
    if(r2==0) cout<<"= "<<r<<endl;
    else if(r3==0) cout<<"= "<<r-1<<endl;
    else if(r4==0) cout<<"= "<<r-2<<endl;
    else cout<<"= "<<r-3<<endl;
}

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB OK (5 queries)
2 Correct 0 ms 344 KB OK (6 queries)
3 Correct 0 ms 344 KB OK (10 queries)
4 Correct 1 ms 344 KB OK (26 queries)
5 Correct 0 ms 372 KB OK (13 queries)
6 Correct 0 ms 344 KB OK (26 queries)
7 Correct 0 ms 344 KB OK (17 queries)
8 Correct 0 ms 344 KB OK (7 queries)
9 Correct 0 ms 344 KB OK (9 queries)
10 Correct 0 ms 344 KB OK (10 queries)
11 Correct 0 ms 344 KB OK (4 queries)
12 Correct 0 ms 344 KB OK (5 queries)
13 Correct 0 ms 344 KB OK (11 queries)
14 Correct 0 ms 344 KB OK (16 queries)
15 Correct 0 ms 344 KB OK (11 queries)
16 Correct 0 ms 344 KB OK (34 queries)
17 Correct 0 ms 344 KB OK (2 queries)
18 Correct 0 ms 344 KB OK (16 queries)
19 Correct 0 ms 344 KB OK (3 queries)
20 Correct 0 ms 356 KB OK (31 queries)
21 Correct 1 ms 344 KB OK (9 queries)
22 Correct 0 ms 344 KB OK (2 queries)
23 Correct 0 ms 344 KB OK (2 queries)
24 Correct 0 ms 344 KB OK (2 queries)
25 Incorrect 0 ms 344 KB Wrong guess
26 Halted 0 ms 0 KB -

Subtask #2
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB OK (5 queries)
2 Correct 0 ms 344 KB OK (6 queries)
3 Correct 0 ms 344 KB OK (10 queries)
4 Correct 1 ms 344 KB OK (26 queries)
5 Correct 0 ms 372 KB OK (13 queries)
6 Correct 0 ms 344 KB OK (26 queries)
7 Correct 0 ms 344 KB OK (17 queries)
8 Correct 0 ms 344 KB OK (7 queries)
9 Correct 0 ms 344 KB OK (9 queries)
10 Correct 0 ms 344 KB OK (10 queries)
11 Correct 0 ms 344 KB OK (4 queries)
12 Correct 0 ms 344 KB OK (5 queries)
13 Correct 0 ms 344 KB OK (11 queries)
14 Correct 0 ms 344 KB OK (16 queries)
15 Correct 0 ms 344 KB OK (11 queries)
16 Correct 0 ms 344 KB OK (34 queries)
17 Correct 0 ms 344 KB OK (2 queries)
18 Correct 0 ms 344 KB OK (16 queries)
19 Correct 0 ms 344 KB OK (3 queries)
20 Correct 0 ms 356 KB OK (31 queries)
21 Correct 1 ms 344 KB OK (9 queries)
22 Correct 0 ms 344 KB OK (2 queries)
23 Correct 0 ms 344 KB OK (2 queries)
24 Correct 0 ms 344 KB OK (2 queries)
25 Incorrect 0 ms 344 KB Wrong guess
26 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB OK (5 queries)
2 Correct 0 ms 344 KB OK (6 queries)
3 Correct 0 ms 344 KB OK (10 queries)
4 Correct 1 ms 344 KB OK (26 queries)
5 Correct 0 ms 372 KB OK (13 queries)
6 Correct 0 ms 344 KB OK (26 queries)
7 Correct 0 ms 344 KB OK (17 queries)
8 Correct 0 ms 344 KB OK (7 queries)
9 Correct 0 ms 344 KB OK (9 queries)
10 Correct 0 ms 344 KB OK (10 queries)
11 Correct 0 ms 344 KB OK (4 queries)
12 Correct 0 ms 344 KB OK (5 queries)
13 Correct 0 ms 344 KB OK (11 queries)
14 Correct 0 ms 344 KB OK (16 queries)
15 Correct 0 ms 344 KB OK (11 queries)
16 Correct 0 ms 344 KB OK (34 queries)
17 Correct 0 ms 344 KB OK (2 queries)
18 Correct 0 ms 344 KB OK (16 queries)
19 Correct 0 ms 344 KB OK (3 queries)
20 Correct 0 ms 356 KB OK (31 queries)
21 Correct 1 ms 344 KB OK (9 queries)
22 Correct 0 ms 344 KB OK (2 queries)
23 Correct 0 ms 344 KB OK (2 queries)
24 Correct 0 ms 344 KB OK (2 queries)
25 Incorrect 0 ms 344 KB Wrong guess
26 Halted 0 ms 0 KB -

Subtask #4
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB OK (5 queries)
2 Correct 0 ms 344 KB OK (6 queries)
3 Correct 0 ms 344 KB OK (10 queries)
4 Correct 1 ms 344 KB OK (26 queries)
5 Correct 0 ms 372 KB OK (13 queries)
6 Correct 0 ms 344 KB OK (26 queries)
7 Correct 0 ms 344 KB OK (17 queries)
8 Correct 0 ms 344 KB OK (7 queries)
9 Correct 0 ms 344 KB OK (9 queries)
10 Correct 0 ms 344 KB OK (10 queries)
11 Correct 0 ms 344 KB OK (4 queries)
12 Correct 0 ms 344 KB OK (5 queries)
13 Correct 0 ms 344 KB OK (11 queries)
14 Correct 0 ms 344 KB OK (16 queries)
15 Correct 0 ms 344 KB OK (11 queries)
16 Correct 0 ms 344 KB OK (34 queries)
17 Correct 0 ms 344 KB OK (2 queries)
18 Correct 0 ms 344 KB OK (16 queries)
19 Correct 0 ms 344 KB OK (3 queries)
20 Correct 0 ms 356 KB OK (31 queries)
21 Correct 1 ms 344 KB OK (9 queries)
22 Correct 0 ms 344 KB OK (2 queries)
23 Correct 0 ms 344 KB OK (2 queries)
24 Correct 0 ms 344 KB OK (2 queries)
25 Incorrect 0 ms 344 KB Wrong guess
26 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB OK (5 queries)
2 Correct 0 ms 344 KB OK (6 queries)
3 Correct 0 ms 344 KB OK (10 queries)
4 Correct 1 ms 344 KB OK (26 queries)
5 Correct 0 ms 372 KB OK (13 queries)
6 Correct 0 ms 344 KB OK (26 queries)
7 Correct 0 ms 344 KB OK (17 queries)
8 Correct 0 ms 344 KB OK (7 queries)
9 Correct 0 ms 344 KB OK (9 queries)
10 Correct 0 ms 344 KB OK (10 queries)
11 Correct 0 ms 344 KB OK (4 queries)
12 Correct 0 ms 344 KB OK (5 queries)
13 Correct 0 ms 344 KB OK (11 queries)
14 Correct 0 ms 344 KB OK (16 queries)
15 Correct 0 ms 344 KB OK (11 queries)
16 Correct 0 ms 344 KB OK (34 queries)
17 Correct 0 ms 344 KB OK (2 queries)
18 Correct 0 ms 344 KB OK (16 queries)
19 Correct 0 ms 344 KB OK (3 queries)
20 Correct 0 ms 356 KB OK (31 queries)
21 Correct 1 ms 344 KB OK (9 queries)
22 Correct 0 ms 344 KB OK (2 queries)
23 Correct 0 ms 344 KB OK (2 queries)
24 Correct 0 ms 344 KB OK (2 queries)
25 Incorrect 0 ms 344 KB Wrong guess
26 Halted 0 ms 0 KB -