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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
#371752	#6394. Turn on the Light	TANGTANGCC	AC ✓	2ms	3920kb	C++23	1.2kb	2024-03-30 15:34:07	2024-03-30 15:34:08

Judging History

你现在查看的是最新测评结果

[2024-03-30 15:34:08]
评测

测评结果：AC
用时：2ms
内存：3920kb

查看

[2024-03-30 15:34:07]
提交

answer

#include <bits/stdc++.h>
#include <sstream>

//#define int long long
#define endl '\n'
#define IO ios::sync_with_stdio(false);cin.tie(0);cout.tie(0)
typedef long long ll;

using namespace std;

const int N=1e6+50;
int sz[N];
signed main() {
    int n,x;
    cin>>n;
    int a;
    printf("? 1\n");
    cin>>a;
    int l=1,r=n;
    if(a==0) {
        printf("! 1");
        return 0;
    }
    l=2;
    while(l<r) {
        //cout<<l<<' '<<r<<endl;
        int m=((l+r)>>1)+1;
        printf("? %d\n",m);
        cin>>x;
        if(x==0 and a==1) {
            a=x;
            r=m-1;
            //cout<<l<<' '<<r<<endl;
            printf("? %d\n",l);
            cin>>x;
            if(a==x) {
                printf("! %d", l);
                return 0;
            }
            else {
                l++;
                a=x;
                continue;
            }
        }
        if(x==a) {
            printf("! %d",m);
            return 0;
        }
        else if(x==a+1) {
            l=m+1;
        }
        else if(x==a-1) {
            r=m-1;
        }
        a=x;
    }
    printf("! %d",l);
    return 0;
}

源文件, 语言: C++23

详细

Test #1:

score: 100

Accepted

time: 0ms

memory: 3844kb

input:

3
1
1

output:

? 1
? 3
! 3

result:

ok Correct position at 3

Test #2:

score: 0

Accepted

time: 1ms

memory: 3860kb

input:

output:

? 1
? 7
? 2
? 5
? 3
! 4

result:

ok Correct position at 4

Test #3:

score: 0

Accepted

time: 0ms

memory: 3920kb

input:

output:

? 1
? 6
? 2
? 5
? 3
! 4

result:

ok Correct position at 4

Test #4:

score: 0

Accepted

time: 0ms

memory: 3736kb

input:

output:

? 1
? 6
? 2
? 5
? 3
! 4

result:

ok Correct position at 4

Test #5:

score: 0

Accepted

time: 1ms

memory: 3864kb

input:

output:

? 1
? 5
? 2
? 4
? 3
! 3

result:

ok Correct position at 3

Test #6:

score: 0

Accepted

time: 1ms

memory: 3740kb

input:

output:

? 1
? 5
? 2
? 4
? 3
! 3

result:

ok Correct position at 3

Test #7:

score: 0

Accepted

time: 0ms

memory: 3744kb

input:

output:

? 1
? 4
? 2
! 3

result:

ok Correct position at 3

Test #8:

score: 0

Accepted

time: 0ms

memory: 3744kb

input:

output:

? 1
? 4
? 2
! 3

result:

ok Correct position at 3

Test #9:

score: 0

Accepted

time: 0ms

memory: 3832kb

input:

output:

? 1
? 3
? 2
! 2

result:

ok Correct position at 2

Test #10:

score: 0

Accepted

time: 0ms

memory: 3912kb

input:

2
1

output:

? 1
! 2

result:

ok Correct position at 2

Test #11:

score: 0

Accepted

time: 0ms

memory: 3732kb

input:

1
0

output:

? 1
! 1

result:

ok Correct position at 1

Test #12:

score: 0

Accepted

time: 0ms

memory: 3736kb

input:

output:

result:

ok Correct position at 21

Test #13:

score: 0

Accepted

time: 1ms

memory: 3824kb

input:

output:

result:

ok Correct position at 21

Test #14:

score: 0

Accepted

time: 0ms

memory: 3732kb

input:

output:

result:

ok Correct position at 21

Test #15:

score: 0

Accepted

time: 1ms

memory: 3828kb

input:

output:

result:

ok Correct position at 21

Test #16:

score: 0

Accepted

time: 1ms

memory: 3740kb

input:

output:

result:

ok Correct position at 21

Test #17:

score: 0

Accepted

time: 1ms

memory: 3796kb

input:

output:

result:

ok Correct position at 21

Test #18:

score: 0

Accepted

time: 0ms

memory: 3780kb

input:

output:

result:

ok Correct position at 21

Test #19:

score: 0

Accepted

time: 2ms

memory: 3736kb

input:

output:

result:

ok Correct position at 21

Test #20:

score: 0

Accepted

time: 2ms

memory: 3736kb

input:

output:

result:

ok Correct position at 21

Test #21:

score: 0

Accepted

time: 1ms

memory: 3824kb

input:

output:

result:

ok Correct position at 21

Test #22:

score: 0

Accepted

time: 1ms

memory: 3784kb

input:

output:

result:

ok Correct position at 43

Test #23:

score: 0

Accepted

time: 1ms

memory: 3840kb

input:

output:

result:

ok Correct position at 51

Test #24:

score: 0

Accepted

time: 1ms

memory: 3836kb

input:

output:

result:

ok Correct position at 51

Test #25:

score: 0

Accepted

time: 1ms

memory: 3740kb

input:

output:

result:

ok Correct position at 51

Test #26:

score: 0

Accepted

time: 1ms

memory: 3772kb

input:

output:

result:

ok Correct position at 999781

Test #27:

score: 0

Accepted

time: 1ms

memory: 3740kb

input:

output:

result:

ok Correct position at 999980

Test #28:

score: 0

Accepted

time: 0ms

memory: 3736kb

input:

output:

result:

ok Correct position at 999979

Test #29:

score: 0

Accepted

time: 1ms

memory: 3888kb

input:

output:

result:

ok Correct position at 999978

Test #30:

score: 0

Accepted

time: 0ms

memory: 3784kb

input:

output:

result:

ok Correct position at 499947

Test #31:

score: 0

Accepted

time: 0ms

memory: 3844kb

input:

output:

result:

ok Correct position at 500070

Test #32:

score: 0

Accepted

time: 1ms

memory: 3916kb

input:

output:

result:

ok Correct position at 500076

Test #33:

score: 0

Accepted

time: 1ms

memory: 3780kb

input:

output:

result:

ok Correct position at 499965

Test #34:

score: 0

Accepted

time: 1ms

memory: 3784kb

input:

output:

result:

ok Correct position at 20

Test #35:

score: 0

Accepted

time: 1ms

memory: 3744kb

input:

output:

result:

ok Correct position at 20

Test #36:

score: 0

Accepted

time: 1ms

memory: 3824kb

input:

output:

result:

ok Correct position at 20

Test #37:

score: 0

Accepted

time: 1ms

memory: 3836kb

input:

output:

result:

ok Correct position at 20

Test #38:

score: 0

Accepted

time: 1ms

memory: 3736kb

input:

output:

result:

ok Correct position at 21

Test #39:

score: 0

Accepted

time: 0ms

memory: 3748kb

input:

output:

result:

ok Correct position at 21

Test #40:

score: 0

Accepted

time: 1ms

memory: 3740kb

input:

output:

result:

ok Correct position at 21

Test #41:

score: 0

Accepted

time: 2ms

memory: 3912kb

input:

output:

result:

ok Correct position at 21

Test #42:

score: 0

Accepted

time: 1ms

memory: 3744kb

input:

output:

result:

ok Correct position at 1000000

Test #43:

score: 0

Accepted

time: 0ms

memory: 3656kb

input:

1000000
0

output:

? 1
! 1

result:

ok Correct position at 1