作者:
炽热的
,
2022-07-27 16:23:08
,
所有人可见
,
阅读 57
原题染色没什么好说的
#include <cstring>
#include <iostream>
#include <algorithm>
using namespace std;
const int N = 310;
int n;
int c[N];
int f[N][N];
int main()
{
cin >> n;
for (int i = 1; i <= n; i ++ ) cin >> c[i];
memset(f, 0x3f, sizeof f);
for (int len = 1; len <= n; len ++ )
for (int l = 1; l + len - 1 <= n; l ++ )
{
int r = l + len - 1;
if (l == r) f[l][r] = 1;
else if (c[l] == c[r]) f[l][r] = min(f[l][r - 1], f[l + 1][r]);
else
for (int k = l; k < r; k ++ )
f[l][r] = min(f[l][r], f[l][k] + f[k + 1][r]);
}
cout << f[1][n] << endl;
return 0;
}