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QOJ

ID	Problem	Submitter	Result	Time	Memory	Language	File size	Submit time	Judge time
#709231	#8332. Two in One	XiCen	WA	23ms	3860kb	C++20	1013b	2024-11-04 13:08:18	2024-11-04 13:08:18

Judging History

你现在查看的是最新测评结果

[2024-11-04 13:08:18]
评测

测评结果：WA
用时：23ms
内存：3860kb

查看

[2024-11-04 13:08:18]
提交

answer

#include<bits/stdc++.h>
//#define int long long

signed main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(0);
    std::cout.tie(0);

    int T;std::cin >> T;
    while (T--)
    {
        int n;std::cin>>n;

        std::vector<int> a(n+1,0),cnt(n+1,0),suf(n+1,0);
        for(int i = 1;i<=n;++i)std::cin>>a[i];

        int mx = 0,mi = 0;
        for(int i = n;i >= 1;--i)
        {
            if(cnt[a[i]] == mx)suf[i] = mi;
            else suf[i] = mx;
            cnt[a[i]]++;
            if(cnt[a[i]] > mx)mi = mx,mx = cnt[a[i]];
            else if(cnt[a[i]] > mi)mi = cnt[a[i]];
        }

        int ans = 0;
        for(int i = 1;i<=n;++i)
        {
            int x = cnt[a[i]],y = suf[i],z = x & y;
            //std::cout<<x<<" "<<y<<" "<<z<<"\n";
            while(z - (z & -z) > 0)z -= (z & -z);
            z = std::max(z,1);
            ans = std::max(ans,(x | y) | (z - 1));
        }

        std::cout<<ans<<"\n";
    }

    return 0;
}

Source code, Language: C++20

Details

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Test #1:

score: 100

Accepted

time: 0ms

memory: 3860kb

input:

1
7
1 2 3 4 3 2 1

output:

result:

ok 1 number(s): "3"

Test #2:

score: 0

Accepted

time: 0ms

memory: 3616kb

input:

1
9
1 1 1 1 1 2 2 2 2

output:

result:

ok 1 number(s): "7"

Test #3:

score: 0

Accepted

time: 20ms

memory: 3676kb

input:

50
10000
72 65 90 94 67 93 41 43 54 83 31 34 38 37 44 42 92 63 66 79 90 45 41 40 19 54 34 90 13 74 40 77 41 57 74 86 91 79 34 39 21 88 90 57 23 31 8 15 80 27 45 38 53 96 51 82 70 71 19 75 62 95 31 67 99 97 94 29 90 7 95 82 61 98 62 77 43 65 66 30 41 69 38 79 51 9 63 77 13 30 72 70 67 93 92 45 74 50 ...

output:

result:

ok 50 numbers

Test #4:

score: -100

Wrong Answer

time: 23ms

memory: 3596kb

input:

79114
7
1 2 4 3 2 3 7
7
1 2 4 7 4 1 5
6
4 2 2 4 2 1
7
1 2 1 4 7 3 2
7
1 2 4 7 1 1 3
7
1 2 6 1 5 2 5
6
5 2 6 1 2 5
7
1 1 7 6 6 5 2
7
1 2 5 6 6 7 7
7
1 1 2 7 2 3 6
7
1 1 1 4 6 2 2
7
1 1 5 7 3 5 2
7
1 1 7 6 2 2 5
6
4 3 4 6 3 1
6
4 4 3 2 3 1
7
1 1 2 3 7 6 2
6
1 2 5 6 3 4
7
1 1 1 1 4 7 6
6
2 6 6 2 5 3
6
...

output:

result:

wrong answer 18th numbers differ - expected: '5', found: '6'