//INOI PRACTICE
 
#include <iostream>
 
using namespace std;
 
unsigned long npeople;
 
//return the UNBURNT i for which sum time is minimum
unsigned long computemaxbursttime(unsigned long sumtime[], unsigned long burnt[], unsigned long coboltime[]);
 
int main()
{
	cin>>npeople;
 
	unsigned long *coboltime = new unsigned long [npeople+1];
	unsigned long *vaulttime = new unsigned long [npeople+1];
	unsigned long *eatingtime = new unsigned long [npeople+1];
	unsigned long *sumtime = new unsigned long [npeople+1];        
	unsigned long *burnt = new unsigned long[npeople+1];
	unsigned long additionaltime = 0;
	unsigned long minrequiredtime = 0;
 
	unsigned long i;
 
	     for(i = 1; i<=npeople; i++)      
	     {
	     	cin>>coboltime[i]>>vaulttime[i]>>eatingtime[i];
	     	sumtime[i] = vaulttime[i] + eatingtime[i];
	     	burnt[i] = 0;
		 }
 
		 i = computemaxbursttime(sumtime, burnt, coboltime);
 
 	     while(i)        
		  {
				burnt[i] = 1;
				minrequiredtime = sumtime[i] + additionaltime + coboltime[i];
				additionaltime += coboltime[i];
				i = computemaxbursttime(sumtime,burnt,coboltime);
			   }
 
	cout<<minrequiredtime; 
 
	return 0;	 
}
 
unsigned long computemaxbursttime(unsigned long sumtime[], unsigned long burnt[], unsigned long coboltime[])
{
	unsigned long pos = 0;
	unsigned long maxburst = 0;
 
	 for(unsigned long i = 1; i<=npeople; i++) 
	 {
	 	if(!burnt[i] && sumtime[i] >= maxburst)
	 	{
			 if(sumtime[i]>maxburst)
			 pos = i;
			 else
			 {
			 	if(coboltime[i]<coboltime[pos])
			 	pos = i;
			 }
		 }
	 }
 
	 return pos;
}