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#include <iostream>

using namespace std;

typedef long long ll;

int main(){

int t;

cin >> t;

while(t--){

int n, sum=0, e;

bool even=false, odd=false;

cin >> n;

for(int i=0;i<n;i++){

cin >> e;

if(e%2==0) even=true;

else odd=true;

sum += e;

}

if(sum%2==1 || (odd && even)) cout << "YES\n";

else cout << "NO\n";

}

}

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