QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #103743 | #6394. Turn on the Light | skyline# | WA | 4ms | 3764kb | C++17 | 714b | 2023-05-07 14:10:07 | 2023-05-07 14:10:10 |
Judging History
answer
#include<bits/stdc++.h>
#define ll long long
#define pb emplace_back
#define mp make_pair
#define orz 1000000007
#define fi first
#define se second
using namespace std;
int n;
int main(){
scanf("%d",&n);
for(int i=1;i<=20;++i){
printf("? %d\n",i);
fflush(stdout);
int x;
scanf("%d",&x);
if(x!=i){
printf("! %d\n",i);
fflush(stdout);
return 0;
}
}
int l=21,r=n;
int la=20;
while(l<r){
int m=(l+r)>>1;
printf("? %d\n",m);
fflush(stdout);
int x;
scanf("%d",&x);
if(x==la){
printf("%d\n",m);
fflush(stdout);
return 0;
}
if(x>la)l=m+1;
else r=m-1;
la=x;
}
printf("%d\n",l);
fflush(stdout);
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3492kb
input:
3 1 2 2
output:
? 1 ? 2 ? 3 ! 3
result:
ok Correct position at 3
Test #2:
score: 0
Accepted
time: 2ms
memory: 3684kb
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: 3ms
memory: 3576kb
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: 1ms
memory: 3584kb
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: 2ms
memory: 3576kb
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: 2ms
memory: 3764kb
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: 1ms
memory: 3484kb
input:
5 1 2 3 3
output:
? 1 ? 2 ? 3 ? 4 ! 4
result:
ok Correct position at 4
Test #8:
score: 0
Accepted
time: 3ms
memory: 3540kb
input:
4 1 2 3 3
output:
? 1 ? 2 ? 3 ? 4 ! 4
result:
ok Correct position at 4
Test #9:
score: 0
Accepted
time: 2ms
memory: 3544kb
input:
3 1 1
output:
? 1 ? 2 ! 2
result:
ok Correct position at 2
Test #10:
score: 0
Accepted
time: 2ms
memory: 3748kb
input:
2 1 1
output:
? 1 ? 2 ! 2
result:
ok Correct position at 2
Test #11:
score: 0
Accepted
time: 0ms
memory: 3540kb
input:
1 0
output:
? 1 ! 1
result:
ok Correct position at 1
Test #12:
score: -100
Wrong Answer
time: 4ms
memory: 3600kb
input:
1000000 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 22 23 24 25 26 27 28 29 30 31 32 31 32 31 32 33
output:
? 1 ? 2 ? 3 ? 4 ? 5 ? 6 ? 7 ? 8 ? 9 ? 10 ? 11 ? 12 ? 13 ? 14 ? 15 ? 16 ? 17 ? 18 ? 19 ? 20 ? 500010 ? 750005 ? 875003 ? 937502 ? 906252 ? 921877 ? 929689 ? 933595 ? 935548 ? 936525 ? 937013 ? 937257 ? 937379 ? 937440 ? 937471 ? 937455 ? 937463 ? 937459 ? 937461 937462
result:
wrong answer Token parameter [name=type] equals to "937462", doesn't correspond to pattern "?|!"