QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #378420 | #6394. Turn on the Light | AChievedreaM# | WA | 1ms | 3688kb | C++17 | 715b | 2024-04-06 12:45:50 | 2024-04-06 12:45:50 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
using ll=long long;
using db=double;
const ll N=1e6+5;
ll a[N];
int main()
{
//ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
ll t,n,q,qq;
t=1;
//cin>>t;
while(t--)
{
cin>>n;
for(ll i=1;i<=20;i++)
{
cout<<"? "<<i<<'\n';
cin>>q;
if(q==qq)
{
cout<<"! "<<i<<'\n';
cout.flush();
return 0;
}
qq=q;
}
cout.flush();
ll l=21,r=1e8,qq=20,mid;
while(l<=r)
{
mid=(l+r+1)/2;
cout<<"? "<<mid<<'\n';
cin>>q;
if(q==qq)
{
cout<<"! "<<mid<<'\n';
cout.flush();
return 0;
}
else if(q>qq)
l=mid+1;
else
r=mid-1;
qq=q;
}
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3688kb
input:
3 1 2 2
output:
? 1 ? 2 ? 3 ! 3
result:
ok Correct position at 3
Test #2:
score: 0
Accepted
time: 1ms
memory: 3680kb
input:
10 1 2 3 4 5 6 7 8 8
output:
? 1 ? 2 ? 3 ? 4 ? 5 ? 6 ? 7 ? 8 ? 9 ! 9
result:
ok Correct position at 9
Test #3:
score: 0
Accepted
time: 1ms
memory: 3612kb
input:
9 1 2 3 4 5 6 7 7
output:
? 1 ? 2 ? 3 ? 4 ? 5 ? 6 ? 7 ? 8 ! 8
result:
ok Correct position at 8
Test #4:
score: 0
Accepted
time: 0ms
memory: 3544kb
input:
8 1 2 3 4 5 6 6
output:
? 1 ? 2 ? 3 ? 4 ? 5 ? 6 ? 7 ! 7
result:
ok Correct position at 7
Test #5:
score: 0
Accepted
time: 0ms
memory: 3664kb
input:
7 1 2 3 4 5 5
output:
? 1 ? 2 ? 3 ? 4 ? 5 ? 6 ! 6
result:
ok Correct position at 6
Test #6:
score: 0
Accepted
time: 0ms
memory: 3624kb
input:
6 1 2 3 4 5 5
output:
? 1 ? 2 ? 3 ? 4 ? 5 ? 6 ! 6
result:
ok Correct position at 6
Test #7:
score: 0
Accepted
time: 0ms
memory: 3560kb
input:
5 1 2 3 3
output:
? 1 ? 2 ? 3 ? 4 ! 4
result:
ok Correct position at 4
Test #8:
score: 0
Accepted
time: 0ms
memory: 3552kb
input:
4 1 2 3 3
output:
? 1 ? 2 ? 3 ? 4 ! 4
result:
ok Correct position at 4
Test #9:
score: 0
Accepted
time: 1ms
memory: 3560kb
input:
3 1 1
output:
? 1 ? 2 ! 2
result:
ok Correct position at 2
Test #10:
score: 0
Accepted
time: 1ms
memory: 3624kb
input:
2 1 1
output:
? 1 ? 2 ! 2
result:
ok Correct position at 2
Test #11:
score: 0
Accepted
time: 1ms
memory: 3596kb
input:
1 0
output:
? 1 ! 1
result:
ok Correct position at 1
Test #12:
score: -100
Wrong Answer
time: 1ms
memory: 3608kb
input:
1000000 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
output:
? 1 ? 2 ? 3 ? 4 ? 5 ? 6 ? 7 ? 8 ? 9 ? 10 ? 11 ? 12 ? 13 ? 14 ? 15 ? 16 ? 17 ? 18 ? 19 ? 20 ? 50000011
result:
wrong answer Integer parameter [name=x] equals to 50000011, violates the range [1, 1000000]