#pragma GCC target("avx") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #include // #include // #include // #include // using namespace __gnu_pbds; // #include // namespace multiprecisioninteger = boost::multiprecision; // using cint=multiprecisioninteger::cpp_int; using namespace std; using ll=long long; #define double long double using datas=pair; using ddatas=pair; using tdata=pair; using vec=vector; using mat=vector; using pvec=vector; using pmat=vector; // using llset=tree,rb_tree_tag,tree_order_statistics_node_update>; #define For(i,a,b) for(i=a;i<(ll)b;++i) #define bFor(i,b,a) for(i=b,--i;i>=(ll)a;--i) #define rep(i,N) For(i,0,N) #define rep1(i,N) For(i,1,N) #define brep(i,N) bFor(i,N,0) #define brep1(i,N) bFor(i,N,1) #define all(v) (v).begin(),(v).end() #define allr(v) (v).rbegin(),(v).rend() #define vsort(v) sort(all(v)) #define vrsort(v) sort(allr(v)) #define endl "\n" #define eb emplace_back #define print(v) cout< inline bool chmax(T& a,T b){bool x=a inline bool chmin(T& a,T b){bool x=a>b;if(x)a=b;return x;} void startupcpp(){ cin.tie(0); ios::sync_with_stdio(false); cout<0){ if(n&1)res=res*a%mod; a=a*a%mod; n>>=1; } return res; } ll gcd(ll a,ll b){if(!b)return abs(a);return (a%b==0)?abs(b):gcd(b,a%b);} ll lcm(ll a,ll b){return a/gcd(a,b)*b;} ll countdigits(ll n){ ll ans=0; while(n){n/=10;ans++;} return ans; } ll sumdigits(ll n){ ll ans=0; while(n){ans+=n%10;n/=10;} return ans; } void topcoder(vector& v){ string s; while(1){ cin>>s; int i=s[0]=='{',x=0; while(s[i]>='0'&&s[i]<='9'){ x=x*10+s[i]-'0'; ++i; } v.eb(x); if(s[i]=='}')break; } } void topcoder(string& s){ string t; cin>>t; int i=1; while(t[i]!='"'){ s+=t[i++]; } } struct unionfind{ private: int maxN; vector par,treesize; public:unionfind(int N) :maxN(N),par(N),treesize(N,1){ for(int i=0;itreesize[y])swap(x,y); par[x]=y; treesize[y]+=treesize[x]; return true; } bool parcheck(int x,int y){ return root(x)==root(y); } int size(int x){ return treesize[root(x)]; } void clear(){ treesize.assign(maxN,1); for(int i=0;i>codeforces;while(codeforces--){ ll i,j,N,M; cin>>N>>M; mat v(N,vec(M)); vec sum(M,0),ans(M,0); pvec lis(N); rep(i,N){ rep(j,M){ cin>>v[i][j]; sum[j]+=v[i][j]; } lis[i]=datas(0,i); } rep(i,N)rep(j,M)lis[i].first+=sum[j]*v[i][j]; vrsort(lis); rep(i,N){ if(i&1)continue; rep(j,M)ans[j]+=v[lis[i].second][j]; } j=0; rep(i,M)j+=ans[i]*ans[i]-(sum[i]-ans[i])*(sum[i]-ans[i]); print(j); }