#include<iostream> using namespace std; int main() { int a[20][20],maxn,minn,n,k; cin>>n; for(int row=1;row<=n;row++){ for(int col=1;col<=n;col++){ cin>>a[row][col]; } } for(int row=1;row<=n;row++){ maxn=-1; for(int col=1;col<=n;col++){ if(a[row][col]>maxn){ maxn=a[row][col]; k=col; } } minn=1000; for(int row=1;row<=n;row++){ if(a[row][k]<minn){ minn=a[row][2]; } } if(maxn==minn) cout<<maxn; } return 0; }