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lightoj 1011.cpp
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lightoj 1011.cpp
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#include<bits/stdc++.h>
using namespace std;
#define ll long long
bool chk(int pos,int val)
{
return (bool) (val & (1<<pos));
}
int Set(int pos,int val)
{
return val=(val | (1<<pos));
}
int dp[1<<17][17];
int vis[1<<17][17];
int a[17][17];
int ii,n;
int func(int mask,int pos)
{
if(pos==n)
return 0;
//cout<<mask<<endl;
if(vis[mask][pos]==ii)
return dp[mask][pos];
vis[mask][pos]=ii;
int re=0;
for(int j=0; j<n; j++)
{
if(!chk(j,mask))
{
re=max(re,(a[pos][j]+func(Set(j,mask),pos+1)));
}
}
return dp[mask][pos]=re;
}
int main()
{
int t;
scanf("%d",&t);
for(ii=1; ii<=t; ii++)
{
scanf("%d",&n);
for(int i=0; i<n; i++)
for(int j=0; j<n; j++)
scanf("%d",&a[i][j]);
printf("Case %d: %d\n",ii,func(0,0));
}
return 0;
}