#pragma GCC optimize ("Ofast") #include using namespace std; void *wmem; char memarr[96000000]; template inline void walloc1d(T **arr, int x, void **mem = &wmem){ static int skip[16] = {0, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1}; (*mem) = (void*)( ((char*)(*mem)) + skip[((unsigned long long)(*mem)) & 15] ); (*arr)=(T*)(*mem); (*mem)=((*arr)+x); } template void sortA_L(int N, T1 a[], void *mem = wmem){ sort(a, a+N); } template void sortA_L(int N, T1 a[], T2 b[], void *mem = wmem){ int i; pair *arr; walloc1d(&arr, N, &mem); for(i=(0);i<(N);i++){ arr[i].first = a[i]; arr[i].second = b[i]; } sort(arr, arr+N); for(i=(0);i<(N);i++){ a[i] = arr[i].first; b[i] = arr[i].second; } } inline int my_getchar_unlocked(){ static char buf[1048576]; static int s = 1048576; static int e = 1048576; if(s == e && e == 1048576){ e = fread_unlocked(buf, 1, 1048576, stdin); s = 0; } if(s == e){ return EOF; } return buf[s++]; } inline void rd(int &x){ int k; int m=0; x=0; for(;;){ k = my_getchar_unlocked(); if(k=='-'){ m=1; break; } if('0'<=k&&k<='9'){ x=k-'0'; break; } } for(;;){ k = my_getchar_unlocked(); if(k<'0'||k>'9'){ break; } x=x*10+k-'0'; } if(m){ x=-x; } } struct MY_WRITER{ char buf[1048576]; int s; int e; MY_WRITER(){ s = 0; e = 1048576; } ~MY_WRITER(){ if(s){ fwrite_unlocked(buf, 1, s, stdout); } } } ; MY_WRITER MY_WRITER_VAR; void my_putchar_unlocked(int a){ if(MY_WRITER_VAR.s == MY_WRITER_VAR.e){ fwrite_unlocked(MY_WRITER_VAR.buf, 1, MY_WRITER_VAR.s, stdout); MY_WRITER_VAR.s = 0; } MY_WRITER_VAR.buf[MY_WRITER_VAR.s++] = a; } inline void wt_L(char a){ my_putchar_unlocked(a); } inline void wt_L(long long x){ int s=0; int m=0; char f[20]; if(x<0){ m=1; x=-x; } while(x){ f[s++]=x%10; x/=10; } if(!s){ f[s++]=0; } if(m){ my_putchar_unlocked('-'); } while(s--){ my_putchar_unlocked(f[s]+'0'); } } template inline T pow2_L(T a){ return a*a; } int N; int M; int A[300][300]; int ind[300]; long long gain[300]; long long tot[300]; long long my[300]; long long op[300]; int main(){ int i; wmem = memarr; long long res = 0; rd(N); rd(M); { int Lj4PdHRW; int KL2GvlyY; for(Lj4PdHRW=(0);Lj4PdHRW<(N);Lj4PdHRW++){ for(KL2GvlyY=(0);KL2GvlyY<(M);KL2GvlyY++){ rd(A[Lj4PdHRW][KL2GvlyY]); } } } for(i=(0);i<(N);i++){ int j; for(j=(0);j<(M);j++){ tot[j] += A[i][j]; } } for(i=(0);i<(N);i++){ int j; for(j=(0);j<(M);j++){ gain[i] += (long long) A[i][j] * tot[j]; } } for(i=(0);i<(N);i++){ ind[i] = i; } sortA_L(N, gain, ind); for(i=(0);i<(N);i++){ int j; for(j=(0);j<(M);j++){ if(i%2==0){ op[j] += A[ind[i]][j]; } else{ my[j] += A[ind[i]][j]; } } } for(i=(0);i<(M);i++){ res +=(pow2_L(my[i]))-(pow2_L(op[i])); } wt_L(res); wt_L('\n'); return 0; } // cLay varsion 20200509-1 // --- original code --- // int N, M, A[300][300]; // int ind[300]; ll gain[300]; // ll tot[300], my[300], op[300]; // { // ll res = 0; // rd(N,M,A(N,M)); // rep(i,N) rep(j,M) tot[j] += A[i][j]; // rep(i,N) rep(j,M) gain[i] += (ll) A[i][j] * tot[j]; // rep(i,N) ind[i] = i; // sortA(N, gain, ind); // // rep(i,N) rep(j,M){ // if[i%2==0, op, my][j] += A[ind[i]][j]; // } // rep(i,M) res += my[i] ** 2 - op[i] ** 2; // wt(res); // }