#include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; #define rep(i,n) for(int i = 0;i<((int)(n));i++) #define reg(i,a,b) for(int i = ((int)(a));i<=((int)(b));i++) #define irep(i,n) for(int i = ((int)(n)-1);i>=0;i--) #define ireg(i,a,b) for(int i = ((int)(b));i>=((int)(a));i--) typedef long long ll; typedef pair mp; ll mod = 1e9+7; ll inf = 1e18; //AC int main(void){ ll n,m,r[100010][20]; vector winner[20]; rep(i,20)winner[i].push_back(0); cin>>n>>m; rep(i,n){ rep(j,m)cin>>r[i][j]; } rep(i,n){ unordered_set s; rep(j,m){ if(r[winner[j][0]][j]0 && r[winner[j][0]][j]==r[i][j]){ winner[j].push_back(i); } rep(k,winner[j].size()){ s.insert(winner[j][k]); } } cout<