//vijos 1059
 
//AC 向 vijos 抗议！
 
#define DEBUG
 
#include <iostream>
#include <bitset>
 
#ifdef DEBUG
#include <fstream>
#endif
 
using namespace std;
 
#ifdef DEBUG
ifstream fin("1059.in");
ofstream fout("1059.out");
#define cin fin
#define cout fout
#endif
 
const unsigned MAX=100;
 
 
int f[MAX+1][(MAX+1)*(MAX+1)];
int source[MAX+1][MAX];
int length[MAX+1];
unsigned N;
unsigned umax=MAX*MAX;
 
void input() {
  memset(f,0,sizeof(int)*(MAX+1)*(MAX+1));
  cin>>N;
  int i;
  int Max=0;
  for (int k=1;k<=N;k++) {
    for (i=0;;i++) {
      int temp;
      cin>>temp;
      if (temp!=-1) {
        Max+=temp;
        source[k][i]=temp;
      }
      else
        break;
    }
    if (Max<umax)
      umax=Max;
    length[k]=i;
  }
}
 
 
void DP() {
  for (int k=1;k<=N;k++) {
    f[k][0]=1;
    for (int j=0;j<length[k];j++)
      for (int i=umax;i>=0;i--) {
        if (i-source[k][j]>=0&&f[k][i-source[k][j]]) {
          f[k][i]=1;
          //break;
        }
      }
  }
}
 
inline bool isOK(unsigned n) {
  for (int i=1;i<=N;i++)
    if (!f[i][n])
            return false;
    return true;
}
 
unsigned status() {
    for (unsigned i=umax;i>=0;i--)
        if (isOK(i))
            return i;
    return 0;
}
 
#ifdef DEBUG
void print() {
    for (int i=1;i<=N;i++) {
        for (int j=0;j<=length[i];j++)
            cout<<source[i][j]<<" ";
        cout<<endl;
    }
}
#endif
 
int main() {
    input();
    DP();
    cout<<status()<<endl;
#ifdef DEBUG
    print();
#endif
    return 0;
}