delete pics to save space
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47
1.1436.cpp
Normal file
47
1.1436.cpp
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#include<cstdio>
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#include<cstring>
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#include<cmath>
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#include<algorithm>
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using namespace std;
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const int oo=0x3f3f3f3f;
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int n,a[20][20],s[20][20],vis[20][20][20][20][20];
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int f[20][20][20][20][20],tot;
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int dp(int R1,int C1,int R2,int C2,int tot)
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{
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int &res=f[R1][C1][R2][C2][tot];
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if(vis[R1][C1][R2][C2][tot]) return res;
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vis[R1][C1][R2][C2][tot]=1;
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if(tot>(R2-R1+1)*(C2-C1+1)) return res=oo;
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if(tot==1)
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{
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double v=s[R2][C2]-s[R2][C1-1]-s[R1-1][C2]+s[R1-1][C1-1];
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return res=v*v;
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}
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res=oo;
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for(int R=R1;R<R2;R++)
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{
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int t=1;
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res=min(res,dp(R1,C1,R,C2,t)+dp(R+1,C1,R2,C2,tot-t));
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t=tot-1;
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res=min(res,dp(R1,C1,R,C2,t)+dp(R+1,C1,R2,C2,tot-t));
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}
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for(int C=C1;C<C2;C++)
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{
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int t=1;
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res=min(res,dp(R1,C1,R2,C,t)+dp(R1,C+1,R2,C2,tot-t));
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t=tot-1;
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res=min(res,dp(R1,C1,R2,C,t)+dp(R1,C+1,R2,C2,tot-t));
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}
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return res;
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}
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int main()
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{
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#ifdef local
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freopen("pro.in","r",stdin);
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#endif
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scanf("%d",&n);
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for(int i=1;i<=8;i++) for(int j=1;j<=8;j++) { scanf("%d",&a[i][j]); tot+=a[i][j]; }
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for(int i=1;i<=8;i++) for(int j=1;j<=8;j++) s[i][j]=s[i-1][j]+s[i][j-1]-s[i-1][j-1]+a[i][j];
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printf("%d\n",dp(1,1,8,8,n));
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return 0;
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}
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