L4170[CQOI2007]涂色

 #include <bits/stdc++.h>
 using namespace std;
 #define rep(i, a, b) for (int i = a; i <= b; ++i)
 ;

 int n, f[N][N]; char a[N];

 int main() {
     scanf(); n = strlen(a + ); memset(f, 0x3f, sizeof(f));
     rep(i, , n) {
         f[i][i] = ;
     }

     rep(len, , n) rep(i, , n - len + ) { ;
         rep(k, i, j - ) {
             ][j] - );
             ][j]);
         }
     }

     printf(][n]);
     ;
 }