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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. #define _ ios_base::sync_with_stdio(false);cin.tie(0);
  4. #define ll long long int
  5. #define SET(a,b) (memset(a,b,sizeof(a)))
  6. #define REP(i,a,b) for(int i = int(a);i<=int(b);i++)
  7. #define mp make_pair
  8. typedef pair<int,int> ii;
  9. int main(){
  10.     _
  11.     ll t;
  12.     cin>>t;
  13.     while(t--){
  14.         ll n,c=0;
  15.         cin>>n;
  16.         while(n--){
  17.             ll a;
  18.             cin>>a;
  19.             if(a!=0 && a!=1)
  20.                 c++;
  21.         }
  22.         if(c<2)
  23.             cout<<"yes"<<endl;
  24.         else
  25.             cout<<"no"<<endl;
  26.     }
  27.     return 0;
  28. }
Success #stdin #stdout 0s 3456KB
comments (?)
stdin
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2
4
8 0 6 7
0
stdout
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no
yes
https://ideone.com/bPkoz1
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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