//zoj 1586#include#include using namespace std;#define N 1005int a[N][N],low[N],n,ans;int b[N];int min(int x,int y){ return x #include using namespace std;#define N 1005int a[N][N],low[N],n,ans;int b[N];int min(int x,int y){ return x #include using namespace std;#define N 1005#define INF 1000000 int a[N][N],low[N],n,ans;int b[N];int min(int x,int y){ return x