41 lines
1.1 KiB
C++
41 lines
1.1 KiB
C++
#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#define MAXN 205
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int a[MAXN];
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int f[MAXN][MAXN];
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int main()
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{
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int T, N;
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for(scanf("%d", &T); T--; )
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{
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scanf("%d", &N);
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for(int i = 1; i <= N; ++i)
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scanf("%d", &a[i]);
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memset(f, 0, sizeof(f));
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int ans = 1;
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for(int i = 1; i <= N; ++i)
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{
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int max = 0;
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for(int j = N; i < j; --j)
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{
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f[i][j] = f[i-1][j];
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if((a[i] == a[j]) && (f[i][j] < max + 1))
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f[i][j] = max + 1;
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else if((a[i] > a[j]) &&(f[i-1][j] > max)) max = f[i-1][j];
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if(f[i][j] * 2 > ans) ans = f[i][j] * 2;
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for(int k = i + 1; k < j; ++k)
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{
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if(a[k] > a[j])
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{
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if(2 * f[i][j] + 1 > ans)
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ans = 2 * f[i][j] + 1;
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}
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}
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}
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}
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printf("%d\n", ans);
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}
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return 0;
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}
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