#include<bits/stdc++.h>
#define ll long long
using namespace std;
#define no cout<<"NO\n"
#define yes cout<<"YES\n"
const ll MOD=1e9+7;
const ll N=2e5+5;
/*void solve(){
ll a, b, c, d, e, g, h, x, y, z, r, l, t, o, p, i, j, k, q, w, s, u, v, n, m;
ll cnt=0, ans=0, sum=0;
string ug,ug1,ug2;
char useg='a';
bool bval=1,bval1=0;
cin>>n;
ll arr[n];
for(auto& x: arr) cin>>x;
for(i=0; i<n; i++){
if(i==0){
if(arr[i]==0){
for(j=0; j<n; j++){}
}
}
}
}
int main(){
ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
ll testCase=1;
cin>>testCase;
while(testCase--){
solve();
}
}*/
int sum(int A, int B){
return A + B;
}
