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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
#133443	#4935. Exchange Bottleneck	Vengeful_Spirit^#	WA	10ms	8280kb	C++20	679b	2023-08-02 09:31:07	2023-08-02 09:31:11

Judging History

你现在查看的是最新测评结果

[2023-08-10 23:21:45]
System Update: QOJ starts to keep a history of the judgings of all the submissions.

[2023-08-02 09:31:11]
评测

测评结果：WA
用时：10ms
内存：8280kb

查看

[2023-08-02 09:31:07]
提交

answer

#include <bits/stdc++.h>
using namespace std;
const int N = 1e6 + 10;
int a[N], pr[N], sf[N];

int main() {
    int n;
    cin >> n;
    for(int i = 1; i < n; ++i) {
        cin >> a[i];
        if(i == 1) a[i] = 1;
        pr[i] = pr[i - 1];
        if(a[i] == 1) pr[i] = i;
    }
    sf[n + 1] = 1e9;
    for(int i = n; i >= 1; --i) {
        if(a[i] == 1) sf[i] = i;
        else sf[i] = sf[i + 1];
    }
    int ans = 0;
    // assert(a[1]);
    for(int i = 1; i < n; ++i) {
        int pos = min(i - pr[i] + 1, sf[i] - i + 1);
        // cerr << i << " " << pos << "\n";
        ans = max(ans, pos);
    }
    cout << ans << "\n";
    return 0;
}

源文件, 语言: C++20

详细

Test #1:

score: 100

Accepted

time: 0ms

memory: 5456kb

input:

5
1 0 1 0

output:

result:

ok single line: '2'

Test #2:

score: 0

Accepted

time: 2ms

memory: 5496kb

input:

7
1 1 1 1 1 1

output:

result:

ok single line: '1'

Test #3:

score: 0

Accepted

time: 2ms

memory: 5572kb

input:

2
0

output:

result:

ok single line: '1'

Test #4:

score: -100

Wrong Answer

time: 10ms

memory: 8280kb

input:

90580
1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 0 1 1 1 1 0 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 0 0 1 1 1 1 1 1 0 1 1 1 1 1 0 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 0 0 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 0 1 1 1 1 1 1 1 1 1 1 ...

output:

result:

wrong answer 1st lines differ - expected: '2', found: '3'