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1399A.cpp
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1399A.cpp
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#include <iostream>
#include <array>
#include <bits/stdc++.h>
using namespace std;
string remove(int input[], int len)
{
int count = 0;
for (int i = 0; i < len; i++)
{
if (input[i] == 0)
{
continue;
}
for (int j = 0; j < len; j++)
{
if (input[j] == 0)
{
continue;
}
if (i == j)
continue;
if (abs(input[i] - input[j]) <= 1)
{
if (input[i] > input[j])
{
input[j] = 0;
}
else
{
input[i] = 0;
}
}
}
}
for (int i = 0; i < len; i++)
{
if (input[i] != 0)
{
count++;
}
}
if (count <= 1)
{
return "YES";
}
else
return "NO";
}
int main(int argc, char const *argv[])
{
int t, len;
cin >> t;
while (t--)
{
cin >> len;
int input[len];
for (int i = 0; i < len; i++)
{
cin >> input[i];
}
int n = sizeof(input) / sizeof(input[0]);
sort(input, input + n);
cout << remove(input, len) << "\n";
}
return 0;
}