QOJ.ac
QOJ
| ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
|---|---|---|---|---|---|---|---|---|---|
| #371544 | #6394. Turn on the Light | HosamaJJF | WA | 0ms | 3704kb | C++17 | 667b | 2024-03-30 13:52:53 | 2024-03-30 13:52:55 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
int n,x,xx;
int main(){
cin>>n;
cout<<"? 1\n";
cout.flush();
cin>>x;
if(x==0){
cout<<"! 1\n";
cout.flush();
return 0;
}
int t=40,l=1,r=n;
while(l<=r){
int mid=(l+r)>>1;
cout<<"? "<<mid<<"\n";
cout.flush();
cin>>xx;
//cout<<"- "<<xx<<"\n";
if(xx<x){
r=mid-1;
}
else if(xx>x){
l=mid+1;
}
else {
cout<<"! "<<mid<<"\n";
cout.flush();
break;
}
x=xx;
}
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3704kb
input:
3 1 2 2
output:
? 1 ? 2 ? 3 ! 3
result:
ok Correct position at 3
Test #2:
score: 0
Accepted
time: 0ms
memory: 3540kb
input:
10 1 2 3 3
output:
? 1 ? 5 ? 8 ? 9 ! 9
result:
ok Correct position at 9
Test #3:
score: 0
Accepted
time: 0ms
memory: 3524kb
input:
9 1 2 3 3
output:
? 1 ? 5 ? 7 ? 8 ! 8
result:
ok Correct position at 8
Test #4:
score: 0
Accepted
time: 0ms
memory: 3608kb
input:
8 1 2 3 3
output:
? 1 ? 4 ? 6 ? 7 ! 7
result:
ok Correct position at 7
Test #5:
score: 0
Accepted
time: 0ms
memory: 3632kb
input:
7 1 2 3 3
output:
? 1 ? 4 ? 6 ? 7 ! 7
result:
ok Correct position at 7
Test #6:
score: 0
Accepted
time: 0ms
memory: 3592kb
input:
6 1 2 3 3
output:
? 1 ? 3 ? 5 ? 6 ! 6
result:
ok Correct position at 6
Test #7:
score: 0
Accepted
time: 0ms
memory: 3600kb
input:
5 1 2 3 3
output:
? 1 ? 3 ? 4 ? 5 ! 5
result:
ok Correct position at 5
Test #8:
score: 0
Accepted
time: 0ms
memory: 3668kb
input:
4 1 2 3 3
output:
? 1 ? 2 ? 3 ? 4 ! 4
result:
ok Correct position at 4
Test #9:
score: 0
Accepted
time: 0ms
memory: 3556kb
input:
3 1 1
output:
? 1 ? 2 ! 2
result:
ok Correct position at 2
Test #10:
score: -100
Wrong Answer
time: 0ms
memory: 3664kb
input:
2 1 1
output:
? 1 ? 1 ! 1
result:
wrong answer Wrong favorite light!