#include<bits/stdc++.h>
using namespace std;
#define int int64_t
const int lim=2e5;
int x[3][lim];
int p[3][lim];
signed main(){
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
int n;
cin>>n;
for(int i=0;i<n;i++){
for(int j=0;j<3;j++){
cin>>x[j][i];
p[j][i]=i;
}
}
for(int i=0;i<3;i++){
sort(p[i],p[i]+n,[&](int a,int b) -> bool {
return x[i][b]<x[i][a];
});
}
int banned[n]{};
int i=0,j=0,k=0;
while(i<n&&j<n&&k<n){
if(banned[p[0][i]])i++;
else if(banned[p[1][j]])j++;
else if(banned[p[2][k]])k++;
else if(p[0][i]==p[1][j])banned[p[0][i]]=1;
else if(p[0][i]==p[2][k])banned[p[0][j]]=1;
else if(p[1][j]==p[2][k])banned[p[1][k]]=1;
else break;
}
if(i<n&&j<n&&k<n){
cout<<x[0][p[0][i]]+x[1][p[1][j]]+x[2][p[2][k]]<<'\n';
}else cout<<"-1\n";
}
