#include<bits/stdc++.h>
#define re          return
#define ll          long long
#define pb          push_back
#define mp          make_pair
#define hell        1000000007
#define endl        '\n'
#define fill(c,val) memset(c,val,sizeof(c))
#define LB lower_bound
#define UB upper_bound
#define bsa(v,n,a) binary_search(v,v+n,a)
#define bsv(v,a) binary_search(v.begin(),v.end(),a)
using namespace std;
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	int flag=0,flag1=0,ans=0,sum=0,cnt0,sum1=0;
	int t=1;
	cin>>t;
	while(t--){
	     int a,b,c;
	     cin>>a>>b>>c;
	     int y=c-a;
	     int x=b-y;
	     cout<<x<<endl;
   }
    return 0;
}