#include<stdio.h>
#include<stdlib.h>
#define size 524288//64
#define dvd 26//3

long long llmax(long long a,long long b){if(a>b){return a;}return b;}

typedef struct{
  long long score;
  long long cost;
}sd;

int sdsortfncsj(const void *a,const void *b){
if(((sd*)a)->cost < ((sd*)b)->cost){return -1;}
if(((sd*)a)->cost > ((sd*)b)->cost){return 1;}
return 0;
}

int sdsortfnckj(const void *a,const void *b){
if(((sd*)a)->cost > ((sd*)b)->cost){return -1;}
if(((sd*)a)->cost < ((sd*)b)->cost){return 1;}
return 0;
}

int main(){
  long long i,j,c=0,fl,w,res=0;
  long long fmem[size];
  sd fir[2][size],sec[2][size],cd;
  //fir[1...last==school] sec[1...first==school]
  //merge pattern : 1+0 0+1 0+0
  long long fc[2]={0},sc[2]={0};
  long long p[64]={0},q[64]={0},r[64]={0};
  long long fp,sp;

  scanf("%lld",&w);
  for(i=0;i<w;i++){scanf("%lld%lld%lld",&p[i],&q[i],&r[i]);}

  w=2*dvd;

  i=0;
  while(i<(1ll<<dvd)){
    fl=0;
    for(j=dvd-2;j>=0;j--){
      if((i&(1ll<<(j+1)))!=0 && (i&(1ll<<j))!=0){
        i+=(1ll<<j);fl=1;
      }
    }
    if(fl==1){continue;}
    fmem[c]=i;
    c++;i++;
  }


  for(i=0;i<c;i++){
    cd.score=0;
    cd.cost=0;
    if((i&1ll)==0){cd.cost-=p[0];}
    for(j=0;j<dvd-1;j++){
      if(i&(1ll<<j)){
        cd.score+=q[j+1];
        cd.cost+=r[j+1];
      }
    }
    for(j=0;j<dvd-1;j++){
      if((i&(1ll<<j))==0 && (i&(1ll<<(j+1)))==0){
        cd.cost-=p[j+1];
      }
    }
    if(i&(1ll<<(dvd-1))){
      fir[1][fc[1]]=cd;fc[1]++;
    }
    else{
      fir[0][fc[0]]=cd;fc[0]++;
    }
  }

  for(i=0;i<c;i++){
    cd.score=0;
    cd.cost=0;
    for(j=0;j<dvd;j++){
      if(i&(1ll<<j)){
        cd.score+=q[dvd+j+1];
        cd.cost+=r[dvd+j+1];
      }
    }
    for(j=0;j<dvd-1;j++){
      if((i&(1ll<<j))==0 && (i&(1ll<<(j+1)))==0){
        cd.cost-=p[dvd+j+1];
      }
    }
    if(i&1ll){
      sec[1][sc[1]]=cd;sc[1]++;
    }
    else{
      sec[0][sc[0]]=cd;sc[0]++;
    }
  }

  //fprintf(stderr,"ok\n");

  for(i=0;i<2;i++){
    //fprintf(stderr,"%lld\n",fc[i]);
    qsort(fir[i],fc[i],sizeof(fir[i][0]),sdsortfncsj);
    for(j=1;j<fc[i];j++){
      fir[i][j].score=llmax(fir[i][j-1].score,fir[i][j].score);
    }
    //for(j=0;j<fc[i];j++){fprintf(stderr,"<%lld : %lld>\n",fir[i][j].cost,fir[i][j].score);}

    qsort(sec[i],sc[i],sizeof(sec[i][0]),sdsortfnckj);
    for(j=sc[i]-2;j>=0;j--){
      sec[i][j].score=llmax(sec[i][j+1].score,sec[i][j].score);
    }
    //for(j=0;j<sc[i];j++){fprintf(stderr,"<%lld : %lld>\n",sec[i][j].cost,sec[i][j].score);}
  }

  //fprintf(stderr,"ok\n");

  fp=0;sp=0;
  while(fp<fc[0] && sp<sc[1]){
    if(fir[0][fp].cost+sec[1][sp].cost<=0){
      res=llmax(fir[0][fp].score+sec[1][sp].score,res);
      fp++;
    }
    else{sp++;}
  }

  fp=0;sp=0;
  while(fp<fc[1] && sp<sc[1]){
    if(fir[1][fp].cost+sec[1][sp].cost+r[dvd]<=0){
      res=llmax(fir[1][fp].score+sec[1][sp].score+q[dvd],res);
      fp++;
    }
    else{sp++;}
  }

  fp=0;sp=0;
  while(fp<fc[0] && sp<sc[0]){
    if(fir[0][fp].cost+sec[0][sp].cost-p[dvd]<=0){
      res=llmax(fir[0][fp].score+sec[0][sp].score,res);
      fp++;
    }
    else{sp++;}
  }

  printf("%lld\n",res);
  return 0;
}