This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
#define int long long
#define all(x) x.begin(),x.end()
#define ff first
#define ss second
#define pb push_back
using namespace std;
signed main(){
ios_base::sync_with_stdio();
cin.tie(0);
int n,m;
cin>>n>>m;
vector <vector <int> > a(n,vector <int>(m));
map <vector <int>,int > mp;
for(int i=0;i<n;i++){
for(int j=0;j<m;j++){
cin>>a[i][j];
}
mp[a[i]]++;
}
vector <int> cnt;
for(int i=0;i<m;i++){
int kol=0;
for(int j=0;j<n;j++){
if(a[j][i]==1)kol++;
}
cnt.pb(kol);
}
if(n<=3000){
for(int i=0;i<n;i++){
for(int k=0;k<m;k++){
if(a[i][k]==1)cnt[k]--;
}
int mx=0;
for(int j=0;j<n;j++){
if(i!=j){
int kol=0;
for(int k=0;k<m;k++){
if(a[j][k]==1)cnt[k]--;
}
for(int k=0;k<m;k++){
if(cnt[k]>=n/2)kol++;
}
for(int k=0;k<m;k++){
if(a[j][k]==1)cnt[k]++;
}
mx=max(mx,kol);
}
}
cout<<mx<<"\n";
for(int k=0;k<m;k++){
if(a[i][k]==1)cnt[k]++;
}
}
return 0;
}
for(int i=0;i<n;i++){
int mx=0;
mp[a[i]]--;
for(int k=0;k<m;k++){
if(a[i][k]==1)cnt[k]--;
}
for(auto v : mp){
if(v.ss>0){
int kol=0;
for(int k=0;k<m;k++){
if(v.ff[k]==1)cnt[k]--;
}
for(int k=0;k<m;k++){
if(cnt[k]>=n/2)kol++;
}
for(int k=0;k<m;k++){
if(v.ff[k]==1)cnt[k]++;
}
mx=max(mx,kol);
}
}
mp[a[i]]++;
for(int k=0;k<m;k++){
if(a[i][k]==1)cnt[k]++;
}
cout<<mx<<"\n";
}
}
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