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Submission #255906

# Submission time Handle Problem Language Result Execution time Memory
255906 2020-08-02T05:23:16 Z 최은수(#5029) Colors (BOI20_colors) C++17
0 / 100
 1 ms 384 KB 
#include<iostream>
#include<vector>
#include<algorithm>
#define ep emplace
#define eb emplace_back
#define fi first
#define se second
#define all(x) (x).begin(),(x).end()
using namespace std;
typedef long long ll;
typedef pair<int,int>pi;
typedef pair<ll,ll>pl;
const int inf=1e9+7;
const ll INF=1e18+7;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    ll n;
    cin>>n;
    ll s=1,e=n;
    ll mx=1ll<<(__builtin_clzll(n));
    vector<ll>dv;
    {
        ll dif=1;
        ll cur=n-1;
        while(cur>0)
            dv.eb(cur),cur-=dif,dif*=2;
    }
    ll sign=1;
    ll cur=1;
    for(ll&t:dv)
        cur+=t*sign,sign*=-1;
    cout<<"? "<<cur<<endl;
    int res;
    cin>>res;
    s=1-(mx-n),e=n;
    while(s<e)
    {
        ll m=s+(e-s)/2;
        if(m>0)
            cur+=m*sign,sign*=-1,cout<<"? "<<cur<<endl,cin>>res;
        else
            res=0;
        if(res==1)
            e=m;
        else
            s=m+1;
    }
    cout<<"= "<<s<<endl;
    return 0;
}

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB OK (4 queries)
2 Correct 0 ms 384 KB OK (7 queries)
3 Correct 1 ms 384 KB OK (3 queries)
4 Correct 0 ms 384 KB OK (4 queries)
5 Correct 0 ms 384 KB OK (6 queries)
6 Correct 0 ms 384 KB OK (7 queries)
7 Correct 0 ms 384 KB OK (7 queries)
8 Correct 0 ms 384 KB OK (7 queries)
9 Correct 0 ms 384 KB OK (7 queries)
10 Correct 0 ms 384 KB OK (3 queries)
11 Correct 0 ms 384 KB OK (5 queries)
12 Correct 0 ms 384 KB OK (6 queries)
13 Correct 0 ms 384 KB OK (7 queries)
14 Correct 0 ms 384 KB OK (7 queries)
15 Correct 0 ms 256 KB OK (7 queries)
16 Correct 0 ms 384 KB OK (7 queries)
17 Correct 0 ms 384 KB OK (7 queries)
18 Correct 0 ms 384 KB OK (7 queries)
19 Correct 0 ms 384 KB OK (6 queries)
20 Correct 0 ms 384 KB OK (7 queries)
21 Correct 1 ms 384 KB OK (7 queries)
22 Correct 0 ms 384 KB OK (2 queries)
23 Correct 0 ms 384 KB OK (2 queries)
24 Correct 0 ms 384 KB OK (3 queries)
25 Correct 0 ms 384 KB OK (3 queries)
26 Correct 1 ms 384 KB OK (2 queries)
27 Correct 0 ms 384 KB OK (3 queries)
28 Correct 1 ms 384 KB OK (3 queries)
29 Correct 0 ms 384 KB OK (3 queries)
30 Correct 0 ms 384 KB OK (3 queries)
31 Correct 1 ms 308 KB OK (4 queries)
32 Correct 0 ms 384 KB OK (4 queries)
33 Incorrect 0 ms 384 KB Hair color 3 was used multiple times
34 Halted 0 ms 0 KB -

Subtask #2
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB OK (4 queries)
2 Correct 0 ms 384 KB OK (7 queries)
3 Correct 1 ms 384 KB OK (3 queries)
4 Correct 0 ms 384 KB OK (4 queries)
5 Correct 0 ms 384 KB OK (6 queries)
6 Correct 0 ms 384 KB OK (7 queries)
7 Correct 0 ms 384 KB OK (7 queries)
8 Correct 0 ms 384 KB OK (7 queries)
9 Correct 0 ms 384 KB OK (7 queries)
10 Correct 0 ms 384 KB OK (3 queries)
11 Correct 0 ms 384 KB OK (5 queries)
12 Correct 0 ms 384 KB OK (6 queries)
13 Correct 0 ms 384 KB OK (7 queries)
14 Correct 0 ms 384 KB OK (7 queries)
15 Correct 0 ms 256 KB OK (7 queries)
16 Correct 0 ms 384 KB OK (7 queries)
17 Correct 0 ms 384 KB OK (7 queries)
18 Correct 0 ms 384 KB OK (7 queries)
19 Correct 0 ms 384 KB OK (6 queries)
20 Correct 0 ms 384 KB OK (7 queries)
21 Correct 1 ms 384 KB OK (7 queries)
22 Correct 0 ms 384 KB OK (2 queries)
23 Correct 0 ms 384 KB OK (2 queries)
24 Correct 0 ms 384 KB OK (3 queries)
25 Correct 0 ms 384 KB OK (3 queries)
26 Correct 1 ms 384 KB OK (2 queries)
27 Correct 0 ms 384 KB OK (3 queries)
28 Correct 1 ms 384 KB OK (3 queries)
29 Correct 0 ms 384 KB OK (3 queries)
30 Correct 0 ms 384 KB OK (3 queries)
31 Correct 1 ms 308 KB OK (4 queries)
32 Correct 0 ms 384 KB OK (4 queries)
33 Incorrect 0 ms 384 KB Hair color 3 was used multiple times
34 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB OK (4 queries)
2 Correct 0 ms 384 KB OK (7 queries)
3 Correct 1 ms 384 KB OK (3 queries)
4 Correct 0 ms 384 KB OK (4 queries)
5 Correct 0 ms 384 KB OK (6 queries)
6 Correct 0 ms 384 KB OK (7 queries)
7 Correct 0 ms 384 KB OK (7 queries)
8 Correct 0 ms 384 KB OK (7 queries)
9 Correct 0 ms 384 KB OK (7 queries)
10 Correct 0 ms 384 KB OK (3 queries)
11 Correct 0 ms 384 KB OK (5 queries)
12 Correct 0 ms 384 KB OK (6 queries)
13 Correct 0 ms 384 KB OK (7 queries)
14 Correct 0 ms 384 KB OK (7 queries)
15 Correct 0 ms 256 KB OK (7 queries)
16 Correct 0 ms 384 KB OK (7 queries)
17 Correct 0 ms 384 KB OK (7 queries)
18 Correct 0 ms 384 KB OK (7 queries)
19 Correct 0 ms 384 KB OK (6 queries)
20 Correct 0 ms 384 KB OK (7 queries)
21 Correct 1 ms 384 KB OK (7 queries)
22 Correct 0 ms 384 KB OK (2 queries)
23 Correct 0 ms 384 KB OK (2 queries)
24 Correct 0 ms 384 KB OK (3 queries)
25 Correct 0 ms 384 KB OK (3 queries)
26 Correct 1 ms 384 KB OK (2 queries)
27 Correct 0 ms 384 KB OK (3 queries)
28 Correct 1 ms 384 KB OK (3 queries)
29 Correct 0 ms 384 KB OK (3 queries)
30 Correct 0 ms 384 KB OK (3 queries)
31 Correct 1 ms 308 KB OK (4 queries)
32 Correct 0 ms 384 KB OK (4 queries)
33 Incorrect 0 ms 384 KB Hair color 3 was used multiple times
34 Halted 0 ms 0 KB -

Subtask #4
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB OK (4 queries)
2 Correct 0 ms 384 KB OK (7 queries)
3 Correct 1 ms 384 KB OK (3 queries)
4 Correct 0 ms 384 KB OK (4 queries)
5 Correct 0 ms 384 KB OK (6 queries)
6 Correct 0 ms 384 KB OK (7 queries)
7 Correct 0 ms 384 KB OK (7 queries)
8 Correct 0 ms 384 KB OK (7 queries)
9 Correct 0 ms 384 KB OK (7 queries)
10 Correct 0 ms 384 KB OK (3 queries)
11 Correct 0 ms 384 KB OK (5 queries)
12 Correct 0 ms 384 KB OK (6 queries)
13 Correct 0 ms 384 KB OK (7 queries)
14 Correct 0 ms 384 KB OK (7 queries)
15 Correct 0 ms 256 KB OK (7 queries)
16 Correct 0 ms 384 KB OK (7 queries)
17 Correct 0 ms 384 KB OK (7 queries)
18 Correct 0 ms 384 KB OK (7 queries)
19 Correct 0 ms 384 KB OK (6 queries)
20 Correct 0 ms 384 KB OK (7 queries)
21 Correct 1 ms 384 KB OK (7 queries)
22 Correct 0 ms 384 KB OK (2 queries)
23 Correct 0 ms 384 KB OK (2 queries)
24 Correct 0 ms 384 KB OK (3 queries)
25 Correct 0 ms 384 KB OK (3 queries)
26 Correct 1 ms 384 KB OK (2 queries)
27 Correct 0 ms 384 KB OK (3 queries)
28 Correct 1 ms 384 KB OK (3 queries)
29 Correct 0 ms 384 KB OK (3 queries)
30 Correct 0 ms 384 KB OK (3 queries)
31 Correct 1 ms 308 KB OK (4 queries)
32 Correct 0 ms 384 KB OK (4 queries)
33 Incorrect 0 ms 384 KB Hair color 3 was used multiple times
34 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB OK (4 queries)
2 Correct 0 ms 384 KB OK (7 queries)
3 Correct 1 ms 384 KB OK (3 queries)
4 Correct 0 ms 384 KB OK (4 queries)
5 Correct 0 ms 384 KB OK (6 queries)
6 Correct 0 ms 384 KB OK (7 queries)
7 Correct 0 ms 384 KB OK (7 queries)
8 Correct 0 ms 384 KB OK (7 queries)
9 Correct 0 ms 384 KB OK (7 queries)
10 Correct 0 ms 384 KB OK (3 queries)
11 Correct 0 ms 384 KB OK (5 queries)
12 Correct 0 ms 384 KB OK (6 queries)
13 Correct 0 ms 384 KB OK (7 queries)
14 Correct 0 ms 384 KB OK (7 queries)
15 Correct 0 ms 256 KB OK (7 queries)
16 Correct 0 ms 384 KB OK (7 queries)
17 Correct 0 ms 384 KB OK (7 queries)
18 Correct 0 ms 384 KB OK (7 queries)
19 Correct 0 ms 384 KB OK (6 queries)
20 Correct 0 ms 384 KB OK (7 queries)
21 Correct 1 ms 384 KB OK (7 queries)
22 Correct 0 ms 384 KB OK (2 queries)
23 Correct 0 ms 384 KB OK (2 queries)
24 Correct 0 ms 384 KB OK (3 queries)
25 Correct 0 ms 384 KB OK (3 queries)
26 Correct 1 ms 384 KB OK (2 queries)
27 Correct 0 ms 384 KB OK (3 queries)
28 Correct 1 ms 384 KB OK (3 queries)
29 Correct 0 ms 384 KB OK (3 queries)
30 Correct 0 ms 384 KB OK (3 queries)
31 Correct 1 ms 308 KB OK (4 queries)
32 Correct 0 ms 384 KB OK (4 queries)
33 Incorrect 0 ms 384 KB Hair color 3 was used multiple times
34 Halted 0 ms 0 KB -