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Make_Permutation.cpp
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51 lines (44 loc) · 837 Bytes
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/*___________________In the name of Allah________________*/
/*____________________Solved By shafinkun________________*/
// Problem link :
#include <bits/stdc++.h>
using namespace std;
#define optimize() \
ios_base::sync_with_stdio(0); \
cin.tie(0); \
cout.tie(0);
#define endl '\n'
#define int long long
#define yes cout << "YES\n"
#define no cout << "NO\n"
const int MOD = 1e9 + 7;
void solve()
{
int n;
cin >> n;
vector<int> v(n);
for (auto &x : v)
cin >> x;
sort(v.begin(), v.end());
for (int i = 0; i < n; ++i)
{
if (v[i] > i + 1)
{
no;
return;
}
}
yes;
return;
}
signed main()
{
optimize();
int t = 1;
cin >> t;
while (t--)
{
solve();
}
return 0;
}