for _ in [0]*int(input()):
a,b,c,d=map(int,input().split())
print(max(a+b,c+d))
#include<bits/stdc++.h>
#include<algorithm>
#include<vector>
#include<string>
#include<cmath>
#include<iomanip>
#include<map>
/**--------------------------------**/
#define ll long long int
#define ld long double
#define ull unsigned long long int
#define pb push_back
#define pf push_front
#define en cout<<endl;
#define yes cout<<"YES"<<endl;
#define no cout<<"NO"<<endl;
#define no1 {cout<<-1<<endl; r0}
#define no0 {cout<<0<<endl; r0}
#define yes_r { cout<<"YES"<<endl; return ; }
#define no_r { cout<<"NO"<<endl; return ; }
#define r0 return ;
#define fr first
#define sc second
#define TT ll tt;cin>>tt;while(tt--)
#define No cout << "No" << endl ;
/**-------------------------------**/
using namespace std ;
int fact(long double n )
{
if(n == 0)
{
return 1;
}
return n * fact(n - 1) ;
}
/**-------------------------------**/
int cnk(int n, int k)
{
return fact(n) / (fact(k) * fact(n - k)) ;
}
/**------------------------------**/
bool even(int n)
{
if(n%2!=0)
return false ;
return true ;
}
/**------------------------------**/
int fib(int n)
{
if(n<2)
return n ;
else
return (fib(n - 1) + fib(n - 2)) ;
}
/**--------------------------------**/
/**--------------------------------**/
bool all_same(string s)
{
for(int i=0; i<s.size(); i++)
if(s[i]!=s[0])
return false ;
return true ;
}
/**---------------------------------**/
bool odd(int a)
{
if(a%2==0)
return false ;
return true ;
}
void softclub()
{
}
int main()
{
ios_base::sync_with_stdio(0) ;
cin.tie(0) ;
cout.tie(0) ;
TT
{
ll a , b , x , y ;
cin >> a >> b >> x >> y ;
cout << max(a + b , x + y) << endl ;
}
}
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610A - Pasha and Stick | 1200A - Hotelier |
1091A - New Year and the Christmas Ornament | 1352B - Same Parity Summands |
1102A - Integer Sequence Dividing | 630B - Moore's Law |
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1690A - Print a Pedestal (Codeforces logo) | 1295A - Display The Number |
1077A - Frog Jumping | 1714G - Path Prefixes |
1369C - RationalLee | 289B - Polo the Penguin and Matrix |
1716A - 2-3 Moves | 1670B - Dorms War |
1716B - Permutation Chain | 987A - Infinity Gauntlet |