Codeforces-SolutionsA/Codes/1765 B - Broken Keyboard/1765B.cpp

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2024-05-09 01:00:54 +08:00
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define endl '\n'
#define FAST (ios_base::sync_with_stdio(false), cin.tie(nullptr));
ll pow(ll x,ll y,ll m=1e9+7){ll ans=1;x%=m;while(y){if(y&1)ans=(ans*x)%m;x=(x*x)%m;y>>=1;}return ans;}
void solve()
{
ll n;
string s;
cin>>n>>s;
if(n%3==2)
{
cout<<"NO\n";
return;
}
for(int i=2; i<s.size(); i+=3)
{
if(s[i]!=s[i-1])
{
cout<<"NO\n";
return;
}
}
cout<<"YES\n";
}
signed main()
{
FAST;
int TCS = 1;
cin >> TCS;
for (int TC = 1; TC <= TCS; ++TC)
{
// cout<<"Case "<<TC<<": ";
solve();
}
}